CN2830641Y - Valve box of hydraulic prop - Google Patents
Valve box of hydraulic prop Download PDFInfo
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- CN2830641Y CN2830641Y CN 200520085034 CN200520085034U CN2830641Y CN 2830641 Y CN2830641 Y CN 2830641Y CN 200520085034 CN200520085034 CN 200520085034 CN 200520085034 U CN200520085034 U CN 200520085034U CN 2830641 Y CN2830641 Y CN 2830641Y
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Abstract
The utility model relates to a valve group for a hydraulic prop of coal mine, particularly to a valve group of a hydraulic prop. The utility model is used for locking a hydraulic cylinder and controlling a spraying device on a hydraulic prop and is mainly composed of a hydraulic lock for locking the hydraulic cylinder and a spraying control valve for controlling the spraying device, wherein the hydraulic lock is provided with a front lock operation interface, a back lock operation interface and a hydraulic control interface. The spraying control valve is provided with a hydraulic control cavity. The hydraulic lock and the spraying control valve are assembled into integration. The hydraulic control cavity of the spraying control valve and the front loc operation interface or the hydraulic control interface of the hydraulic lock are connected by a passage in the valve. The spraying control valve is opened or closed when the hydraulic lock works, and thus, the spraying control valve is linked with the hydraulic lock to control the operation of the hydraulic cylinder. The valve group of a hydraulic prop omits a pipeline for controlling the spraying control valve in the prior art, simplifies the pipeline system of the hydraulic prop, reduces the fault points of the pipeline system and avoids accidents caused by the wrong connection of pipelines, with the advantages of convenient, easy and fast installation and use, and safe and reliable operation of the hydraulic prop.
Description
Affiliated technical field
The utility model relates to and is used for locking the valve group that hydraulic cylinder and the work of control atomizing de-dusting equipment are used, a kind of the valve for roof support group on valve group, the especially hydraulic support that coal mine hydraulic supporting uses.
Background technology
Being used for locking the hydraulic lock that hydraulic cylinder uses in the prior art field on comprehensive mining hydraulic bracket and the mining hydraulic support has unidirectional hydraulic lock and bidirectional hydraulic lock, and being used for controlling the spray control valve that the work of atomizing de-dusting equipment uses has single hydraulic control spray control valve and double hydraulic control spray control valve.Hydraulic lock and spray control valve are independent separately, are installed in respectively on the diverse location of hydraulic support, and the hydraulic control interface of the interface of hydraulic lock and spray control valve is connected with the hydraulic system of hydraulic support by pipeline, accepts the control of hydraulic pressure support hydraulic system.This mode that hydraulic lock is separated with spray control valve has increased the complexity of hydraulic support pipeline system, has also increased the unsafe factor of hydraulic support.
Summary of the invention
In order to overcome the weak point that hydraulic lock is separated with spray control valve in the prior art this mode exists, and provide a kind of with hydraulic lock and spray control valve assembling all-in-one-piece the valve for roof support group.To reduce pipeline, simplify the pipe-line system of hydraulic support, reduce the fault-avoidance accident as much as possible.
Purpose of design of the present utility model can reach by following measure:
A kind of the valve for roof support group, comprise and be used for locking the hydraulic lock spray control valve that work is used with control atomizing de-dusting equipment that hydraulic cylinder uses on the hydraulic support, hydraulic lock has the preceding working interface of lock, lock back working interface and hydraulic control interface, spray control valve has liquid controling cavity, hydraulic lock and spray control valve are assembled into one, and working interface or hydraulic control interface have the corresponding connection of valve internal channel before the liquid controling cavity of spray control valve and the lock of hydraulic lock.
Purpose of design of the present utility model can also reach by following measure:
Hydraulic support is the mining hydraulic support.
Hydraulic lock is unidirectional hydraulic lock, and spray control valve is single hydraulic control spray control valve, and working interface has the valve internal channel to be communicated with before the liquid controling cavity of single hydraulic control spray control valve and the lock of unidirectional hydraulic lock.
Hydraulic lock is unidirectional hydraulic lock, and spray control valve is single hydraulic control spray control valve, and the hydraulic control interface of the liquid controling cavity of single hydraulic control spray control valve and unidirectional hydraulic lock has the valve internal channel to be communicated with.
Hydraulic lock is unidirectional hydraulic lock, spray control valve is the double hydraulic control spray control valve, a preceding working interface of the lock with unidirectional hydraulic lock in two liquid controling cavities of double hydraulic control spray control valve has the valve internal channel to be communicated with, and the hydraulic control interface of another in two liquid controling cavities of double hydraulic control spray control valve and unidirectional hydraulic lock has the valve internal channel to be communicated with.
Hydraulic lock is a bidirectional hydraulic lock, working interface is again the hydraulic control interface simultaneously before the lock of bidirectional hydraulic lock, spray control valve is single hydraulic control spray control valve, and one before two locks of the liquid controling cavity of single hydraulic control spray control valve and bidirectional hydraulic lock in the working interface has the valve internal channel to be communicated with.
Hydraulic lock is a bidirectional hydraulic lock, working interface is again the hydraulic control interface simultaneously before the lock of bidirectional hydraulic lock, spray control valve is the double hydraulic control spray control valve, one in the preceding working interface of two locks with bidirectional hydraulic lock in two liquid controling cavities of double hydraulic control spray control valve has the valve internal channel to be communicated with, and the another one before the another one in two liquid controling cavities of double hydraulic control spray control valve and two locks of bidirectional hydraulic lock in the working interface has the valve internal channel to be communicated with.
Hydraulic lock is board-like connection hydraulic lock, and spray control valve is board-like connection spray control valve.
Hydraulic lock is embedded hydraulic lock, and spray control valve is embedded spray control valve.
Hydraulic lock is the plug-in hydraulic lock, and spray control valve is the plug-in spray control valve.
The beneficial effects of the utility model are:
1, uses this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.
2, use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.
3, use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
Description of drawings
Fig. 1: of the present utility model by unidirectional hydraulic lock of board-like connection and the board-like structural representation that is connected the superposing type the valve for roof support group that single hydraulic control spray control valve forms.
Fig. 2: the schematic diagram of the valve for roof support group shown in Figure 1.
Fig. 3: the structural representation of the embedded the valve for roof support group of forming to hydraulic lock and the shared same public valve body of embedded single hydraulic control spray control valve by embedded single of the present utility model.
Fig. 4: the schematic diagram of the valve for roof support group shown in Figure 3.
Fig. 5: of the present utility model by unidirectional hydraulic lock of board-like connection and the board-like structural representation that is connected the superposing type the valve for roof support group that the double hydraulic control spray control valve forms.
The M1-M1 sectional view of Fig. 6: Fig. 5.
The M2-M2 sectional view of Fig. 7: Fig. 5.
Fig. 8: the schematic diagram of the valve for roof support group shown in Figure 5.
Fig. 9: the structural representation of the embedded the valve for roof support group of forming to hydraulic lock and the shared same public valve body of Embedded Double hydraulic control spray control valve by embedded single of the present utility model.
Figure 10: of the present utility model by board-like connection bidirectional hydraulic lock and the board-like structural representation that is connected the superposing type the valve for roof support group that single hydraulic control spray control valve forms.
Figure 11: the schematic diagram of the valve for roof support group shown in Figure 10.
Figure 12: of the present utility model by board-like connection bidirectional hydraulic lock and the board-like structural representation that is connected the superposing type the valve for roof support group that single hydraulic control spray control valve forms.
Figure 13: the schematic diagram of the valve for roof support group shown in Figure 12.
Figure 14: the structural representation of the embedded the valve for roof support group of forming by built-in bidirectional hydraulic lock and the shared same public valve body of Embedded Double hydraulic control spray control valve of the present utility model.
The M3-M3 sectional view of Figure 15: Figure 14.
The M4-M4 sectional view of Figure 16: Figure 14.
Figure 17: the schematic diagram of the valve for roof support group shown in Figure 14.
Figure 18: of the present utility model by board-like connection bidirectional hydraulic lock and the board-like structural representation that is connected the superposing type the valve for roof support group that the double hydraulic control spray control valve forms.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is described further:
Embodiment one
Fig. 1 and Fig. 2 illustrate a kind of structure of superposing type the valve for roof support group of the present utility model.The superposing type the valve for roof support group of this structure comprises the unidirectional hydraulic lock of the board-like connection of a slice (1), the single hydraulic control spray control valve of the board-like connection of a slice (2) and connecting bolt (3).
The unidirectional hydraulic lock of board-like connection (1) is made up of valve body (4), spool (5), valve seat (6), spring (7), piston (8), valve pocket I (9), valve pocket II (10), seal (11) etc.The preceding working interface (12) of lock is arranged on its valve body (4), lock back working interface (13) is arranged on the valve pocket I (9), hydraulic control interface (14) is arranged on the valve pocket II (10).The valve internal channel (15) that is communicated with working interface (12) before the lock is arranged on the stack joint face of valve body (4).
The single hydraulic control spray control valve of board-like connection (2) is made up of valve body (16), spool (17), valve seat (18), spring (19), piston (20), valve pocket I (21), valve pocket II (22), seal (23) etc.Spray water water inlet interface (24) is arranged on its valve pocket I (21), spray water water outlet interface (25) is arranged on the valve body (16), liquid controling cavity (26) is arranged in the valve pocket II (22).The valve internal channel (27) that is communicated with liquid controling cavity (26) is arranged on the stack joint face of valve body (16).
The unidirectional hydraulic lock of board-like connection (1) aligns with the board-like stack joint face that is connected single hydraulic control spray control valve (2), valve internal channel (15) is communicated with valve internal channel (27), is assembled into integrally formed superposing type the valve for roof support group of the present utility model by connecting bolt (3).
Working interface (12) is communicated with by the working interface of pipeline with the operation valve of hydraulic support before the lock of the unidirectional hydraulic lock of board-like connection (1), lock back working interface (13) is communicated with by the working chamber of pipeline with the hydraulic cylinder of hydraulic support, and hydraulic control interface (14) is communicated with the working interface of the operation valve of hydraulic support and another working chamber of hydraulic cylinder by pipeline.The spray water water inlet interface (24) of the single hydraulic control spray control valve of board-like connection (2) is communicated with the spray water supply channel of hydraulic support by pipeline, and spray water water outlet interface (25) is communicated with the atomizing de-dusting equipment of hydraulic support by pipeline.
Fig. 2 is the schematic diagram of the superposing type the valve for roof support group of present embodiment.
When the operation valve of hydraulic support was changed to a certain operating position, working interface (12) was by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system before the lock of the unidirectional hydraulic lock of board-like connection (1).The liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) is by the preceding working interface (12) of the lock of valve internal channel (27), valve internal channel (15), the unidirectional hydraulic lock of board-like connection (1), corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.Pressure in the liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) raises, the elastic force that piston (20) promotion spool (17) overcomes spring (19) moves axially, the single hydraulic control spray control valve of board-like connection (2) is opened, the spray water water inlet interface (24) and spray water water outlet interface (25) conducting of the single hydraulic control spray control valve of board-like connection (2) are worked with the atomizing de-dusting device start that the board-like spray water water outlet interface (25) that is connected single hydraulic control spray control valve (2) connects.
When the operation valve of hydraulic support was changed to the centre position, working interface (12) was communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of the unidirectional hydraulic lock of board-like connection (1).The liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (12) of the lock of valve internal channel (27), valve internal channel (15), the unidirectional hydraulic lock of board-like connection (1), corresponding pipeline, hydraulic support.Pressure in the liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) reduces, spring (19) promotes spool (17) under the effect of elastic force and piston (20) moves axially, the single hydraulic control spray control valve of board-like connection (2) is closed, the spray water water inlet interface (24) and the spray water water outlet interface (25) of the single hydraulic control spray control valve of board-like connection (2) disconnect, and the atomizing de-dusting equipment that connects with the board-like spray water water outlet interface (25) that is connected single hydraulic control spray control valve (2) quits work.
Use this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.Use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.Use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
The unidirectional hydraulic lock of board-like connection of the superposing type the valve for roof support group of present embodiment can be a slice, also can be two or multi-disc, it can also be the unidirectional hydraulic lock of board-like connection of other form of structure, it can also be the unidirectional hydraulic lock of plug-in, the single hydraulic control spray control valve of board-like connection can be a slice, also can be two or multi-disc, can also be plug-in list hydraulic control spray control valve.
The superposing type the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment two
Fig. 3 and Fig. 4 illustrate a kind of structure of embedded the valve for roof support group of the present utility model.The embedded the valve for roof support group of this structure comprises one group of unidirectional hydraulic lock and one group of single hydraulic control spray control valve.
Unidirectional hydraulic lock is made up of with the spool (5) identical with embodiment one, valve seat (6), spring (7), piston (8), valve pocket I (9), valve pocket II (10), seal (11) etc. the part of public valve body (28).Working interface (29) before the lock is arranged on the public valve body (28), working interface (13) behind the lock identical with embodiment one is arranged on the valve pocket I (9), the hydraulic control interface (14) identical with embodiment one is arranged on the valve pocket II (10).
Single hydraulic control spray control valve is made up of with the spool (17) identical with embodiment one, valve seat (18), spring (19), piston (20), valve pocket I (21), valve pocket II (22), seal (23) etc. the part of public valve body (28).The spray water water inlet interface (24) identical with embodiment one is arranged on the valve pocket I (21), spray water water outlet interface (30) is arranged on the public valve body (28), the liquid controling cavity (26) identical with embodiment one arranged in the valve pocket II (22).
The valve internal channel (31) that is communicated with hydraulic control interface (14) and liquid controling cavity (26) is arranged on the public valve body (28).
Unidirectional hydraulic lock and the shared same public valve body of single hydraulic control spray control valve (28) are assembled into integrally formed embedded the valve for roof support group of the present utility model.Hydraulic control interface (14) and liquid controling cavity (26) are communicated with by valve internal channel (31).
Working interface (29) is communicated with by the working interface of pipeline with the operation valve of hydraulic support before the lock of unidirectional hydraulic lock, lock back working interface (13) is communicated with by the working chamber of pipeline with the hydraulic cylinder of hydraulic support, and hydraulic control interface (14) is communicated with the working interface of the operation valve of hydraulic support and another working chamber of hydraulic cylinder by pipeline.The spray water water inlet interface (24) of single hydraulic control spray control valve is communicated with the spray water supply channel of hydraulic support by pipeline, and spray water water outlet interface (30) is communicated with the atomizing de-dusting equipment of hydraulic support by pipeline.
Fig. 4 is the schematic diagram of the embedded the valve for roof support group of present embodiment.
When the operation valve of hydraulic support was changed to a certain operating position, the hydraulic control interface (14) of unidirectional hydraulic lock was by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.The liquid controling cavity (26) of single hydraulic control spray control valve is by the hydraulic control interface (14) of valve internal channel (31), unidirectional hydraulic lock, corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.Pressure in the liquid controling cavity (26) of single hydraulic control spray control valve raises, the elastic force that piston (20) promotion spool (17) overcomes spring (19) moves axially, single hydraulic control spray control valve is opened, the spray water water inlet interface (24) and spray water water outlet interface (30) conducting of single hydraulic control spray control valve, the atomizing de-dusting device start that is connected with the spray water water outlet interface (30) of single hydraulic control spray control valve work.
When the operation valve of hydraulic support was changed to the centre position, the hydraulic control interface (14) of unidirectional hydraulic lock was communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support.The liquid controling cavity (26) of single hydraulic control spray control valve is communicated with the return line of coal-face liquid-supplying system by the operation valve of the hydraulic control interface (14) of valve internal channel (31), unidirectional hydraulic lock, corresponding pipeline, hydraulic support.Pressure in the liquid controling cavity (26) of single hydraulic control spray control valve reduces, spring (19) promotes spool (17) under the effect of elastic force and piston (20) moves axially, single hydraulic control spray control valve is closed, the spray water water inlet interface (24) and the spray water water outlet interface (30) of single hydraulic control spray control valve disconnect, and the atomizing de-dusting equipment that is connected with the spray water water outlet interface (30) of single hydraulic control spray control valve quits work.
Use this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.Use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.Use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
The unidirectional hydraulic lock of the embedded the valve for roof support group of present embodiment can be one group, also can be two groups or many groups, the embedded single that can also be other form of structure is to hydraulic lock, it can also be the unidirectional hydraulic lock of plug-in, single hydraulic control spray control valve can be one group, also can be two groups or many groups, can also be plug-in list hydraulic control spray control valve.
The embedded the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment three
Fig. 5, Fig. 6, Fig. 7 and Fig. 8 illustrate a kind of structure of superposing type the valve for roof support group of the present utility model.The superposing type the valve for roof support group of this structure comprises the unidirectional hydraulic lock of the board-like connection of a slice (32), the board-like connection double hydraulic control of a slice spray control valve (33) and connecting bolt (34).
The unidirectional hydraulic lock of board-like connection (32) is made up of with the spool (5) identical with embodiment one, valve seat (6), spring (7), piston (8), seal (11) etc. valve body (35), valve pocket I (36), valve pocket II (37).One side of its valve body (35) has the preceding working interface (38) of lock, hydraulic control interface (39), and offside has lock back working interface (40), hydraulic control interface (41).The valve internal channel (42) that is communicated with working interface (38) before the lock is arranged on the stack joint face of its valve body (35), the valve internal channel (43) that is communicated with hydraulic control interface (39,41) is arranged.
Board-like connection double hydraulic control spray control valve (33) is made up of valve body (44), spool (45), valve seat (46), push rod (47), valve pocket I (48), valve pocket II (49), seal (50), separation sleeve (51), screw plug (52) etc.One side of its valve body (44) has spray water water inlet interface (53), and offside has spray water water outlet interface (54).Liquid controling cavity I (55), liquid controling cavity II (56) are arranged in the valve.Valve internal channel (57) that is communicated with liquid controling cavity I (55) and the valve internal channel (58) that is communicated with liquid controling cavity II (56) are arranged on the stack joint face of its valve body (44).
The unidirectional hydraulic lock of board-like connection (32) aligns with the board-like stack joint face that is connected double hydraulic control spray control valve (33), valve internal channel (42) and the corresponding connection of valve internal channel (57), valve internal channel (43) and the corresponding connection of valve internal channel (58) are assembled into integrally formed superposing type the valve for roof support group of the present utility model by connecting bolt (34).
Working interface (38) and hydraulic control interface (39) are by the working interface corresponding connection of pipeline with the operation valve of hydraulic support before the lock of the unidirectional hydraulic lock of board-like connection (32), and lock back working interface (40) and hydraulic control interface (41) are by pipeline and the corresponding connection in two chambeies of the hydraulic cylinder of hydraulic support.The spray water water inlet interface (53) of board-like connection double hydraulic control spray control valve (33) is communicated with the spray water supply channel of hydraulic support by pipeline, and spray water water outlet interface (54) is communicated with the atomizing de-dusting equipment of hydraulic support by pipeline.
Fig. 8 is the schematic diagram of the superposing type the valve for roof support group of present embodiment.
When the operation valve of hydraulic support mediated, working interface (38) and hydraulic control interface (39) were communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of the unidirectional hydraulic lock of board-like connection (32).The liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (57), valve internal channel (42), working interface (38) before the lock of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support is communicated with the return line of coal-face liquid-supplying system, and the liquid controling cavity II (56) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (58), valve internal channel (43), the hydraulic control interface (39) of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support is communicated with the return line of coal-face liquid-supplying system.Do not work with the hydraulic cylinder that hydraulic control interface (41) is connected with lock back working interface (40).Pressure in the liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33) and the liquid controling cavity II (56) equates and is very low, spool (45) and the suffered axial force of push rod (47) depend on the pressure of spray water and keep former duty constant, be that spool (45) and push rod (47) do not produce and move axially, board-like connection double hydraulic control spray control valve (33) does not produce commutation, does not change duty.The atomizing de-dusting equipment that connects with the board-like spray water water outlet interface (54) that is connected double hydraulic control spray control valve (33) does not change duty.
When the operation valve of hydraulic support is changed to a certain operating position, working interface (38) is by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system before the lock of the unidirectional hydraulic lock of board-like connection (32), and the hydraulic control interface (39) of the unidirectional hydraulic lock of board-like connection (32) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support.The liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (57), valve internal channel (42), working interface (38) before the lock of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system, the liquid controling cavity II (56) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (58), valve internal channel (43), the hydraulic control interface (39) of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support is communicated with the return line of coal-face liquid-supplying system.The hydraulic cylinder that is connected with hydraulic control interface (41) with lock back working interface (40) is to a direction job.Pressure height in the liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33), pressure in the liquid controling cavity II (56) is low, spool (45) promotes push rod (47) and moves axially, board-like connection double hydraulic control spray control valve (33) is closed, the spray water water inlet interface (53) and the spray water water outlet interface (54) of board-like connection double hydraulic control spray control valve (33) disconnect, and the atomizing de-dusting equipment that connects with the board-like spray water water outlet interface (54) that is connected double hydraulic control spray control valve (33) quits work.
When the operation valve of hydraulic support is changed to another operating position, working interface (38) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of the unidirectional hydraulic lock of board-like connection (32), and the hydraulic control interface (39) of the unidirectional hydraulic lock of board-like connection (32) is by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.The liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (57), valve internal channel (42), working interface (38) before the lock of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support is communicated with the return line of coal-face liquid-supplying system, and the liquid controling cavity II (56) of board-like connection double hydraulic control spray control valve (33) is by valve internal channel (58), valve internal channel (43), the hydraulic control interface (39) of the unidirectional hydraulic lock of board-like connection (32), corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.Work to another direction with the hydraulic cylinder that lock back working interface (40) is connected with hydraulic control interface (41).Pressure in the liquid controling cavity I (55) of board-like connection double hydraulic control spray control valve (33) is low, pressure height in the liquid controling cavity II (56), push rod (47) promotes spool (45) and moves axially, board-like connection double hydraulic control spray control valve (33) is opened, the spray water water inlet interface (53) and spray water water outlet interface (54) conducting of board-like connection double hydraulic control spray control valve (33) are worked with the atomizing de-dusting device start that the board-like spray water water outlet interface (54) that is connected double hydraulic control spray control valve (33) connects.
Use this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.Use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.Use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
The unidirectional hydraulic lock of board-like connection of the superposing type the valve for roof support group of present embodiment can be a slice, also can be two or multi-disc, can also be the unidirectional hydraulic lock of board-like connection of other form of structure, can also be the unidirectional hydraulic lock of plug-in.Board-like connection double hydraulic control spray control valve can be a slice, also can be two or multi-disc, can also be plug-in double hydraulic control spray control valve.
The superposing type the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment four
Fig. 9 illustrates a kind of structure of embedded the valve for roof support group of the present utility model.The embedded the valve for roof support group of this structure is to copy the form of structure combination system of embodiment two to do to become a public valve body valve body of the valve body of the unidirectional hydraulic lock of embodiment three and double hydraulic control spray control valve, and unidirectional hydraulic lock and double hydraulic control spray control valve utilize this public valve body to be assembled into integrally formed embedded the valve for roof support group of the present utility model.The liquid controling cavity I (55) of double hydraulic control spray control valve is communicated with the hydraulic control interface (60) of unidirectional hydraulic lock by valve internal channel (59), and liquid controling cavity II (56) is communicated with the preceding working interface (62) of the lock of unidirectional hydraulic lock by valve internal channel (61).
All the other structures are identical with embodiment three.
The embedded the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment five
Figure 10 and Figure 11 illustrate a kind of structure of superposing type the valve for roof support group of the present utility model.The superposing type the valve for roof support group of this structure comprises the single hydraulic control spray control valve of board-like connection (2) that the board-like connection bidirectional hydraulic lock of a slice (63), a slice and embodiment one are identical and the identical connecting bolt (3) with embodiment one.
Board-like connection bidirectional hydraulic lock (63) is made up of valve body (64), spool I (65), spool II (66), valve seat I (67), valve seat II (68), spring I (69), spring II (70), piston (71), valve pocket I (72), valve pocket II (73), seal (74) etc.One side of valve body (64) has the preceding working interface (75) of lock, the preceding working interface (76) of lock, and working interface (75, the 76) while is again the hydraulic control interface before the lock.Lock back working interface (77) is arranged on the valve pocket I (72), lock back working interface (78) is arranged on the valve pocket II (73).The valve internal channel (79) that is communicated with working interface (75) before the lock is arranged on the stack joint face of valve body (64).
Identical with embodiment 1, the single hydraulic control spray control valve of board-like connection (2) is made up of valve body (16), spool (17), valve seat (18), spring (19), piston (20), valve pocket I (21), valve pocket II (22), seal (23) etc.Spray water water inlet interface (24) is arranged on its valve pocket I (21), spray water water outlet interface (25) is arranged on the valve body (16), liquid controling cavity (26) is arranged in the valve pocket II (22).The valve internal channel (27) that is communicated with liquid controling cavity (26) is arranged on the stack joint face of valve body (16).
Board-like connection bidirectional hydraulic lock (63) aligns with the board-like stack joint face that is connected single hydraulic control spray control valve (2), valve internal channel (79) and the corresponding connection of valve internal channel (27) are assembled into integrally formed superposing type the valve for roof support group of the present utility model by connecting bolt (3).
Working interface (76) is by the working interface corresponding connection of pipeline with the operation valve of hydraulic support before working interface (75) and the lock before the lock of board-like connection bidirectional hydraulic lock (63), and lock back working interface (77) and lock back working interface (78) are by pipeline and the corresponding connection in two chambeies of the hydraulic cylinder of hydraulic support.The spray water water inlet interface (24) of the single hydraulic control spray control valve of board-like connection (2) is communicated with the spray water supply channel of hydraulic support by pipeline, and spray water water outlet interface (25) is communicated with the atomizing de-dusting equipment of hydraulic support by pipeline.
Figure 11 is the schematic diagram of the superposing type the valve for roof support group of present embodiment.
When the operation valve of hydraulic support is changed to a certain operating position, working interface (75) is by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system before the lock of board-like connection bidirectional hydraulic lock (63), and working interface (76) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock.The liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) is by the preceding working interface (75) of the lock of valve internal channel (27), valve internal channel (79), board-like connection bidirectional hydraulic lock (63), corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.Pressure in the liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) raises, the elastic force that piston (20) promotion spool (17) overcomes spring (19) moves axially, the single hydraulic control spray control valve of board-like connection (2) is opened, the spray water water inlet interface (24) and spray water water outlet interface (25) conducting of the single hydraulic control spray control valve of board-like connection (2) are worked with the atomizing de-dusting device start that the board-like spray water water outlet interface (25) that is connected single hydraulic control spray control valve (2) connects.
When the operation valve of hydraulic support is changed to the centre position, working interface (75) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of board-like connection bidirectional hydraulic lock (63), and working interface (76) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock.The liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (75) of the lock of valve internal channel (27), valve internal channel (79), board-like connection bidirectional hydraulic lock (63), corresponding pipeline, hydraulic support.Pressure in the liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) reduces, spring (19) promotes spool (17) under the effect of elastic force and piston (20) moves axially, the single hydraulic control spray control valve of board-like connection (2) is closed, the spray water water inlet interface (24) and the spray water water outlet interface (25) of the single hydraulic control spray control valve of board-like connection (2) disconnect, and the atomizing de-dusting equipment that connects with the board-like spray water water outlet interface (25) that is connected single hydraulic control spray control valve (2) quits work.
Use this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.Use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.Use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
The board-like connection bidirectional hydraulic lock of the superposing type the valve for roof support group of present embodiment can be a slice, also can be two or multi-disc, it can also be the board-like connection bidirectional hydraulic lock of other form of structure, it can also be the plug-in bidirectional hydraulic lock, the single hydraulic control spray control valve of board-like connection can be a slice, also can be two or multi-disc, can also be plug-in list hydraulic control spray control valve.
The superposing type the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment six
Figure 12 and Figure 13 illustrate a kind of structure of superposing type the valve for roof support group of the present utility model.The superposing type the valve for roof support group of this structure is the valve body (81) that the valve body (64) of the board-like connection bidirectional hydraulic lock (63) among the embodiment five is made into the board-like connection bidirectional hydraulic lock (80) of present embodiment.Working interface (76) before working interface (75) before the lock identical with embodiment five, the lock is arranged, lock back working interface (77), lock back working interface (78) on the valve body (81).The valve internal channel (82) that is communicated with working interface (76) before the lock is arranged on the stack joint face of valve body (81).The single hydraulic control spray control valve of board-like connection (2) is identical with embodiment five.
Board-like connection bidirectional hydraulic lock (80) aligns with the board-like stack joint face that is connected single hydraulic control spray control valve (2), valve internal channel (82) and the corresponding connection of valve internal channel (27) are assembled into integrally formed superposing type the valve for roof support group of the present utility model by connecting bolt (3).
The liquid controling cavity (26) of the single hydraulic control spray control valve of board-like connection (2) is communicated with the board-like preceding working interface (76) of valve that is connected bidirectional hydraulic lock (80) by valve internal channel (27), valve internal channel (82).
All the other structures are identical with embodiment five.
Figure 13 is the schematic diagram of the superposing type the valve for roof support group of present embodiment.
The superposing type the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment seven
Figure 14, Figure 15, Figure 16 and Figure 17 illustrate a kind of structure of embedded the valve for roof support group of the present utility model.The embedded the valve for roof support group of this structure is made up of one group of bidirectional hydraulic lock and one group of double hydraulic control spray control valve, the shared same public valve body of bidirectional hydraulic lock and double hydraulic control spray control valve (83) and be assembled into one.
As Figure 14, shown in Figure 15, the part of public valve body (83), spool I (84), spool II (85), valve seat I (86), valve seat II (87), spring I (88), spring II (89), piston (90), valve pocket I (91), valve pocket II (92), seal (93) etc. constitute bidirectional hydraulic lock.One side of corresponding bidirectional hydraulic lock valve body (83) has working interface (95) before working interface (94) before the lock, the lock, and working interface (94,95) is again the hydraulic control interface simultaneously before the lock, and offside has lock back working interface (96), lock back working interface (97).
As Figure 14, shown in Figure 16, the part of valve body (83) is formed the double hydraulic control spray control valve with spool (45), valve seat (46), push rod (47), valve pocket I (48), valve pocket II (49), seal (50), separation sleeve (51), the screw plug (52) identical with embodiment three.One side of corresponding double hydraulic control spray control valve valve body (83) has spray water water inlet interface (98), spray water water outlet interface (99).Liquid controling cavity I (55), the liquid controling cavity II (56) identical with embodiment three are arranged in the valve.
The valve internal channel (100) that is communicated with preceding working interface (94) of lock and liquid controling cavity I (55) is arranged, the valve internal channel (101) that has and the preceding working interface (95) of lock and liquid controling cavity II (56) to be communicated with in the valve body (83).
Working interface (95) is by the working interface corresponding connection of pipeline with the operation valve of hydraulic support before working interface (94) and the lock before the lock of bidirectional hydraulic lock, and lock back working interface (96) and lock back working interface (97) are by pipeline and the corresponding connection in two chambeies of the hydraulic cylinder of hydraulic support.The spray water water inlet interface (98) of double hydraulic control spray control valve is communicated with the spray water supply channel of hydraulic support by pipeline, and spray water water outlet interface (99) is communicated with the atomizing de-dusting equipment of hydraulic support by pipeline.
When the operation valve of hydraulic support mediated, the preceding working interface (95) of working interface (94) and lock was communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of bidirectional hydraulic lock.The liquid controling cavity I (55) of double hydraulic control spray control valve is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (94) of the lock of valve internal channel (100), bidirectional hydraulic lock, corresponding pipeline, hydraulic support, and the liquid controling cavity II (56) of double hydraulic control spray control valve is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (95) of the lock of valve internal channel (101), bidirectional hydraulic lock, corresponding pipeline, hydraulic support.Do not work with the hydraulic cylinder that lock back working interface (97) is connected with lock back working interface (96).Pressure in the liquid controling cavity I (55) of double hydraulic control spray control valve and the liquid controling cavity II (56) equates and is very low, spool (45) and the suffered axial force of push rod (47) depend on the pressure of spray water and keep former duty constant, be that spool (45) and push rod (47) do not produce and move axially, the double hydraulic control spray control valve does not produce commutation, do not change duty, the atomizing de-dusting equipment that is connected with the spray water water outlet interface (99) of double hydraulic control spray control valve does not change duty.
When the operation valve of hydraulic support is changed to a certain operating position, working interface (94) is by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system before the lock of bidirectional hydraulic lock, and working interface (95) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of bidirectional hydraulic lock.The liquid controling cavity I (55) of double hydraulic control spray control valve is by the preceding working interface (94) of the lock of valve internal channel (100), bidirectional hydraulic lock, corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system, and the liquid controling cavity II (56) of double hydraulic control spray control valve is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (95) of the lock of valve internal channel (101), bidirectional hydraulic lock, corresponding pipeline, hydraulic support.The hydraulic cylinder that is connected with back working interface of lock (96) and lock back working interface (97) is to a direction job.Pressure height in the liquid controling cavity I (55) of double hydraulic control spray control valve, pressure in the liquid controling cavity II (56) is low, spool (45) promotes push rod (47) and moves axially, the double hydraulic control spray control valve is closed, the spray water water inlet interface (98) and the spray water water outlet interface (99) of double hydraulic control spray control valve disconnect, and the atomizing de-dusting equipment that is connected with the spray water water outlet interface (99) of double hydraulic control spray control valve quits work.
When the operation valve of hydraulic support is changed to another operating position, working interface (94) is communicated with the return line of coal-face liquid-supplying system by the operation valve of pipeline and hydraulic support before the lock of bidirectional hydraulic lock, and working interface (95) is by the operation valve of pipeline and hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system before the lock of bidirectional hydraulic lock.The liquid controling cavity I (55) of double hydraulic control spray control valve is communicated with the return line of coal-face liquid-supplying system by the operation valve of the preceding working interface (94) of the lock of valve internal channel (100), bidirectional hydraulic lock, corresponding pipeline, hydraulic support, and the liquid controling cavity II (56) of double hydraulic control spray control valve is by the preceding working interface (95) of the lock of valve internal channel (101), bidirectional hydraulic lock, corresponding pipeline, the operation valve of hydraulic support and the influent stream pipeline connection of coal-face liquid-supplying system.Work to another direction with the hydraulic cylinder that lock back working interface (96) is connected with lock back working interface (97).Pressure in the liquid controling cavity I (55) of double hydraulic control spray control valve is low, pressure height in the liquid controling cavity II (56), push rod (47) promotes spool (45) and moves axially, the double hydraulic control spray control valve is opened, the spray water water inlet interface (98) and spray water water outlet interface (99) conducting of double hydraulic control spray control valve, the atomizing de-dusting device start that is connected with the spray water water outlet interface (99) of double hydraulic control spray control valve work.
Figure 17 is the schematic diagram of the embedded the valve for roof support group of present embodiment.
Use this valve for roof support group, removed spray control valve hydraulic control interface and the pressure duct that the hydraulic system of hydraulic support is connected in the prior art, simplified the pipe-line system of hydraulic support, install and use more convenient, simple.Use this valve for roof support group, reduced the hydraulic support pipeline, thereby reduced the trouble point of hydraulic support pipeline system, hydraulic support work is more safe and reliable.Use this valve for roof support group, the accident that can avoid wrong hydraulic support pipeline to lead to effectively.
The bidirectional hydraulic lock of the embedded the valve for roof support group of present embodiment can be one group, also can be two groups or many groups, it can also be the built-in bidirectional hydraulic lock of other form of structure, it can also be the plug-in bidirectional hydraulic lock, the double hydraulic control spray control valve can be one group, also can be two groups or many groups, can also be plug-in double hydraulic control spray control valve.
The embedded the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Embodiment eight
Figure 18 illustrates a kind of structure of superposing type the valve for roof support group of the present utility model.The superposing type the valve for roof support group of this structure is to copy corresponding bidirectional hydraulic lock of form of structure and the double hydraulic control spray control valve of embodiment three to be made into two independently valve bodies the public valve body of the bidirectional hydraulic lock of embodiment seven and double hydraulic control spray control valve, the valve body (103) of promptly board-like connection bidirectional hydraulic lock (102) and the board-like valve body (44) that be connected double hydraulic control spray control valve (33) identical with embodiment three.The valve internal channel (105) that is communicated with working interface (104) before the lock is arranged on the stack joint face of the valve body (103) of board-like connection bidirectional hydraulic lock (102), the valve internal channel (107) that is communicated with working interface (106) before the lock is arranged.
Board-like connection bidirectional hydraulic lock (102) aligns with the board-like stack joint face that is connected double hydraulic control spray control valve (33), valve internal channel (105) and the corresponding connection of valve internal channel (57), valve internal channel (107) and the corresponding connection of valve internal channel (58) are assembled into integrally formed superposing type the valve for roof support group of the present utility model by the connecting bolt (34) identical with embodiment three.
All the other structures are identical with embodiment seven.
The superposing type the valve for roof support group of present embodiment is applicable to comprehensive mining hydraulic bracket, is equally applicable to the mining hydraulic support.
Claims (10)
1, a kind of the valve for roof support group, comprise and be used for locking the hydraulic lock spray control valve that work is used with control atomizing de-dusting equipment that hydraulic cylinder uses on the hydraulic support, hydraulic lock has the preceding working interface of lock, lock back working interface and hydraulic control interface, spray control valve has liquid controling cavity, it is characterized in that said hydraulic lock and spray control valve are assembled into one, working interface or hydraulic control interface have the corresponding connection of valve internal channel before the liquid controling cavity of spray control valve and the lock of hydraulic lock.
2, the valve for roof support group according to claim 1 is characterized in that said hydraulic support is the mining hydraulic support.
3, the valve for roof support group according to claim 1 and 2, it is characterized in that said hydraulic lock is unidirectional hydraulic lock, spray control valve is single hydraulic control spray control valve, and working interface (12) has valve internal channel (15,27) to be communicated with before the lock of liquid controling cavity of single hydraulic control spray control valve (26) and unidirectional hydraulic lock.
4, the valve for roof support group according to claim 1 and 2, it is characterized in that said hydraulic lock is unidirectional hydraulic lock, spray control valve is single hydraulic control spray control valve, and the hydraulic control interface (14) of liquid controling cavity of single hydraulic control spray control valve (26) and unidirectional hydraulic lock has valve internal channel (31) to be communicated with.
5, the valve for roof support group according to claim 1 and 2, it is characterized in that said hydraulic lock is unidirectional hydraulic lock, spray control valve is the double hydraulic control spray control valve, working interface (38) has valve internal channel (42,57) to be communicated with before one (55) in two liquid controling cavities (55,56) of double hydraulic control spray control valve and the lock of unidirectional hydraulic lock, and another (56) in two liquid controling cavities (55,56) of double hydraulic control spray control valve and the hydraulic control interface (39,41) of unidirectional hydraulic lock have valve internal channel (43,58) to be communicated with.
6, the valve for roof support group according to claim 1 and 2, it is characterized in that said hydraulic lock is a bidirectional hydraulic lock, working interface is again the hydraulic control interface simultaneously before the lock of bidirectional hydraulic lock, spray control valve is single hydraulic control spray control valve, and (75) before two locks of liquid controling cavity of single hydraulic control spray control valve (26) and bidirectional hydraulic lock in the working interface (75,76) have valve internal channel (27,79) to be communicated with.
7, the valve for roof support group according to claim 1 and 2, it is characterized in that said hydraulic lock is a bidirectional hydraulic lock, working interface is again the hydraulic control interface simultaneously before the lock of bidirectional hydraulic lock, spray control valve is the double hydraulic control spray control valve, two liquid controling cavities (55 of double hydraulic control spray control valve, 56) working interface (94 before (55) in and two locks of bidirectional hydraulic lock, 95) (94) in have valve internal channel (100) to be communicated with two liquid controling cavities (55 of double hydraulic control spray control valve, working interface (94 before two locks of another one 56) (56) and bidirectional hydraulic lock, 95) another one in (95) has valve internal channel (101) to be communicated with.
8, the valve for roof support group according to claim 1 and 2 is characterized in that said hydraulic lock is board-like connection hydraulic lock, and spray control valve is board-like connection spray control valve.
9, the valve for roof support group according to claim 1 and 2 is characterized in that said hydraulic lock is embedded hydraulic lock, and spray control valve is embedded spray control valve.
10, the valve for roof support group according to claim 1 and 2 is characterized in that said hydraulic lock is the plug-in hydraulic lock, and spray control valve is the plug-in spray control valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085034 CN2830641Y (en) | 2005-07-08 | 2005-07-08 | Valve box of hydraulic prop |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520085034 CN2830641Y (en) | 2005-07-08 | 2005-07-08 | Valve box of hydraulic prop |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2830641Y true CN2830641Y (en) | 2006-10-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520085034 Expired - Fee Related CN2830641Y (en) | 2005-07-08 | 2005-07-08 | Valve box of hydraulic prop |
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| Country | Link |
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| CN (1) | CN2830641Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102220876A (en) * | 2011-06-16 | 2011-10-19 | 李慧岭 | Automatic spraying valve |
| CN102400977A (en) * | 2011-12-02 | 2012-04-04 | 上海布威重工机械有限公司 | Hydraulic lock |
| CN101403312B (en) * | 2007-10-05 | 2013-07-24 | 玛珂系统分析和开发有限公司 | Valve device and support frame including the valve device |
| CN105673601A (en) * | 2014-11-21 | 2016-06-15 | 上海新跃仪表厂 | Zero-leakage hydraulic zero position lock |
| CN106122548A (en) * | 2016-08-17 | 2016-11-16 | 中煤科工集团重庆研究院有限公司 | Non-electric transfer point spray control valve |
| CN110374947A (en) * | 2019-07-09 | 2019-10-25 | 浙江科力车辆控制系统有限公司 | Oil cylinder with two-way linkage locking function |
-
2005
- 2005-07-08 CN CN 200520085034 patent/CN2830641Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101403312B (en) * | 2007-10-05 | 2013-07-24 | 玛珂系统分析和开发有限公司 | Valve device and support frame including the valve device |
| CN102220876A (en) * | 2011-06-16 | 2011-10-19 | 李慧岭 | Automatic spraying valve |
| CN102400977A (en) * | 2011-12-02 | 2012-04-04 | 上海布威重工机械有限公司 | Hydraulic lock |
| CN105673601A (en) * | 2014-11-21 | 2016-06-15 | 上海新跃仪表厂 | Zero-leakage hydraulic zero position lock |
| CN105673601B (en) * | 2014-11-21 | 2017-11-07 | 上海新跃仪表厂 | A kind of Zero-leakage hydraulic zero-bit lock |
| CN106122548A (en) * | 2016-08-17 | 2016-11-16 | 中煤科工集团重庆研究院有限公司 | Non-electric transfer point spray control valve |
| CN106122548B (en) * | 2016-08-17 | 2018-05-29 | 中煤科工集团重庆研究院有限公司 | Non-electric transfer point spray control valve |
| CN110374947A (en) * | 2019-07-09 | 2019-10-25 | 浙江科力车辆控制系统有限公司 | Oil cylinder with two-way linkage locking function |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061025 Termination date: 20110708 |