CN206668665U - A kind of hydraulic cylinder with valve block - Google Patents

Abstract

The utility model discloses a kind of hydraulic cylinder with valve block, including hydraulic cylinder and valve block, the valve block includes valve body, there is first passage in the valve body, second channel and third channel, and the first passage and third channel are connected with second channel respectively, the first valve mechanism for being used for controlling break-make between first passage and second channel is provided with the second channel, the second valve mechanism for being used for controlling break-make between second channel and third channel is provided with the third channel, the moving component of the hydraulic cylinder is connected with the control unit of the first valve mechanism, the third channel connects with the rodless cavity of hydraulic cylinder.The utility model is simple in construction, making is easy, and valve block can cooperate with hydraulic cylinder, be controlled using the moving component of hydraulic cylinder, realize the break-make of hydraulic circuit；Compared to sequence valve, it had not both had to connection external oil pipe, and again without delay and hysteretic phenomenon, the number for also reducing pipeline causes loop more succinct and safe.

Description

A kind of hydraulic cylinder with valve block

Technical field

Hydraulic cylinder field is the utility model is related to, relates in particular to a kind of hydraulic cylinder with valve block

Background technology

Hydraulic cylinder, it is that hydraulic energy is changed into mechanical energy, does the hydraulic pressure execution of straight reciprocating motion (or oscillating motion) Element.Its simple in construction, reliable operation.During with it to realize reciprocating motion, deceleration device can be removed from, and without between transmission Gap, stable movement, therefore be used widely in various mechanical hydraulic systems.

The existing sequence of motion for generally controlling different hydraulic cylinders by sequence valve in hydraulic system, but sequence valve makes Used time by certain delay and hysteresis, can so cause hydraulic cylinder action discontinuous and shake.

Utility model content

Technical problem to be solved in the utility model is to provide a kind of simple in construction, making easily, can utilize hydraulic pressure The moving component of cylinder controls the hydraulic cylinder with valve block of the break-make of hydraulic circuit in fact.

In order to solve the above-mentioned technical problem, the utility model adopts the following technical scheme that：A kind of hydraulic cylinder with valve block, bag Hydraulic cylinder and valve block are included, the valve block includes valve body, has first passage, second channel and third channel in the valve body, It is provided with and the first passage and third channel are connected with second channel respectively, in the second channel and is used to control first to lead to First valve mechanism of break-make between road and second channel, interior be provided with of the third channel are used to control second channel and threeway The second valve mechanism of break-make, the moving component of the hydraulic cylinder are connected with the control unit of the first valve mechanism between road, institute Third channel is stated to connect with the rodless cavity of hydraulic cylinder.

Further, the hydraulic cylinder includes cylinder body and the piston rod and piston that coordinate with cylinder body, in addition to primary oil Pipe and secondary oil pipe, the piston rod is hollow structure, and the primary oil pipe is fixed in the piston rod, and the primary oil Pipe the piston rod between there is gap, the secondary oil pipe is located on the cylinder body, and the secondary oil pipe with it is described Cylinder body is slidably matched, and the inner of the secondary oil pipe is stretched into the primary oil pipe, outer end and the first valve of the secondary oil pipe The control unit connection of door mechanism, the inner of the secondary oil pipe is additionally provided with position limiting structure, for preventing the secondary oil pipe The inner skids off from primary oil pipe.

Further, first valve mechanism includes the first valve element, the first valve seat, the first spring and the first push rod, First valve element is slidably matched with second channel, and first push rod is connected with the first valve element, and first spring is arranged on Between first valve element and the first valve seat.

Further, first valve element and the first push rod are hollow structure, and the moving component of the hydraulic cylinder passes through First valve seat is connected with the first push rod, and the moving component of the hydraulic cylinder is slidably matched with the first valve seat.

Further, second valve mechanism includes the second valve element, the second valve seat, second spring and the second push rod, Second valve element is slidably matched with third channel, and second push rod is connected with the second valve element, and the second spring is arranged on Between second valve element and the second valve seat.

Further, second valve seat is hollow structure, and one end of second push rod passes through valve body and the second valve element One end away from the second valve seat connect, and second push rod and valve body slides coordinate.

Further, in addition to dust cover and jacking block, the dust cover are fixed on the outer surface of valve body, second push rod The other end stretch into dust cover, one end of the jacking block is connected through dust cover with the other end of the second push rod, and the top Block is slidably matched with dust cover.

Further, the front end of the piston rod is provided with head, and the front end of the primary oil pipe is fixed in head, described The first oilhole and the second oilhole are offered in head, first oilhole connects with primary oil pipe, second oilhole and primary Gap connection between oil pipe and piston rod.

Further, the cylinder body include cylinder barrel, be connected to cylinder barrel front end cylinder sleeve and be connected to the rear end of cylinder barrel Cylinder bottom, the rear end face of the piston is provided with cushion chamber, and the front end face of the cylinder bottom is provided with mounting hole, is provided with the mounting hole Buffer plunger, the secondary oil pipe coordinate through buffer plunger and with buffer plunger gap.

Further, the 3rd oil duct being connected with mounting hole is offered on the cylinder bottom, the valve body is fixed on cylinder bottom Rear end, the third channel is connected with the 3rd oil duct.

The beneficial effects of the utility model are embodied in：

The utility model is simple in construction, making is easy, and valve block can cooperate with hydraulic cylinder, utilize the motion of hydraulic cylinder Part is controlled, and realizes the break-make of hydraulic circuit；Compared to sequence valve, it had not both had to connection external oil pipe, and did not postpone And hysteretic phenomenon, the number for also reducing pipeline cause loop more succinct and safely, can smoothly realize two or more liquid Cylinder pressure continuous action.

Brief description of the drawings

Fig. 1 is the structural representation of the embodiment of the utility model one.

Fig. 2 is the structural representation of the embodiment valve block of the utility model one.

Fig. 3 is enlarged drawing at A.

In accompanying drawing the mark of each part for：Valve block 1, valve body 11, first passage 111, second channel 112, third channel 113rd, the first valve element 121, the first valve seat 122, the first spring 123, the first push rod 124, first through hole 1241, the second valve element 131, Blind hole 1311, the second through hole 1312, the second valve seat 132, second spring 133, the second push rod 134, dust cover 14, jacking block 15, cylinder Cylinder 21, cylinder sleeve 22, cylinder bottom 23, mounting hole 231, the 3rd oil duct 232, piston rod 24, piston 25, cushion chamber 251, primary oil pipe 26th, secondary oil pipe 27, position limiting structure 271, plug 28, cylinder head 29, head 20, the first oil duct 201, the second oil duct 202, bumper post Plug 31, stop collar 32, support ring 33, external oil pipe 4.

Embodiment

Describe the utility model in detail below with reference to the accompanying drawings and in conjunction with the embodiments.It should be noted that do not conflicting In the case of, the feature in embodiment and embodiment in the application can be mutually combined.

Referring to Fig. 1 and Fig. 2.

Hydraulic cylinder of the utility model with valve block includes hydraulic cylinder and valve block, and the valve block includes valve body 11, the valve body There is first passage 111, second channel 112 and third channel 113, and the first passage 111 and third channel 113 in 11 It is connected respectively with second channel 112, is provided with the second channel 112 and is used to control first passage 111 and second channel 112 Between break-make the first valve mechanism, be provided with the third channel 113 and be used to control second channel 112 and third channel 113 Between break-make the second valve mechanism, the moving component of the hydraulic cylinder is connected with the control unit of the first valve mechanism, described Third channel 113 connects with the rodless cavity of hydraulic cylinder.

During hydraulic cylinder works, hydraulic oil is passed through second channel, and in the presence of no external force, the first valve mechanism will First passage blocks with second channel, now controls the second valve mechanism to connect second channel with third channel by external force, So hydraulic oil enters the rodless cavity of hydraulic cylinder by third channel, so as to promote piston to move；And with the motion of hydraulic cylinder, The moving component of hydraulic cylinder drives the control unit movement of the first valve mechanism, so as to connect first passage and second channel, this As long as when external force is not applied to the second valve mechanism, second channel is truncated with third channel, then hydraulic oil cannot be introduced into hydraulic pressure The rodless cavity of cylinder, can only enter first passage and flows out, fuel-displaced to be available for subordinate's oil cylinder to use so as to pin hydraulic cylinder, can be steady Realize two or more hydraulic cylinder continuous action.

In one embodiment, first valve mechanism includes the first valve element 121, the first valve seat 122, the first spring 123 And first push rod 124, first valve element 121 are slidably matched with second channel 112, the valve of the first push rod 124 and first Core 121 is connected, and first spring 123 is arranged between the first valve element 121 and the first valve seat 122；Second valve mechanism Including the second valve element 131, the second valve seat 132, the push rod 134 of second spring 133 and second, second valve element 131 and the 3rd Passage 113 is slidably matched, and second push rod 134 is connected with the second valve element 131, and the second spring 133 is arranged on the second valve Between the valve seat 132 of core 131 and second.

The valve mechanism of this structure, it is reasonable in design, easily make, on-off function is realized by the position for adjusting valve element, In the presence of no external force, the first valve element is only by the first spring force, and the second valve element is only by second spring elastic force, in the first bullet Under spring force effect, the first valve element blocks first passage and second channel, and under the effect of second spring elastic force, the second valve element will Second channel blocks with third channel.Push rod is the control unit of valve mechanism, and the moving component of hydraulic cylinder and the first push rod connect Connect.

In the structure illustrated in figure, second channel 112 and third channel 113 are two level shoulder hole structure, the first valve element 121 and second the outer wall of valve element 131 have one section of circular conical surface, when the circular conical surface of the first valve element and the second valve element, to be resisted against second logical When on the step of road and third channel, it is truncated between respective channel, when the circular conical surface of the first valve element and the second valve element leaves During the step of two passages and third channel, connected between respective channel.

In one embodiment, second valve seat 132 is hollow structure, can facilitate third channel and hydraulic cylinder without bar Chamber is connected, and one end of second push rod 134 is connected through valve body 11 with one end away from the second valve seat of the second valve element 131, And second push rod 134 is slidably matched with valve body 11.So design can facilitate staff to control the second valve machine manually Structure.In specific implementation, the blind hole 1311 of the one end open close to the second valve seat, the blind hole 1311 are provided with second valve element Hole side wall on be provided with the second through hole 1312；Between second push rod and valve body, between the first valve element and second channel wall and Seal is housed between one valve seat and second channel wall.

In one embodiment, in addition to dust cover 14 and jacking block 15, the dust cover 14 are fixed on the appearance of valve body 111 Face, the other end of second push rod 134 is stretched into dust cover 14, and for preventing dust from entering, one end of the jacking block 15 is worn The other end that dust cover 14 is crossed with the second push rod 134 is connected, and the jacking block 15 is slidably matched with dust cover 14.Jacking block 15 is set The second push rod 134 of convenient control, in specific implementation, jacking block 15 is T-shaped, and the head of jacking block 15 is stretched into dust cover 14 to push away with second The other end connection of bar 134, can so form effectively spacing, prevent from slipping, the interior chamber size of dust cover is more than the head of jacking block Size, it so just can guarantee that jacking block can slide and drive the second push rod to move back and forth.

In one embodiment, the hydraulic cylinder includes cylinder body and the piston rod 24 and piston 25 that coordinate with cylinder body, also wraps Primary oil pipe 26 and secondary oil pipe 27 are included, the piston rod 24 is hollow structure, and the primary oil pipe 26 is fixed on the piston In bar 24, and there is gap between the primary oil pipe 26 and the piston rod 24, the secondary oil pipe 27 is located in the cylinder On body, and the secondary oil pipe 27 is slidably matched with the cylinder body, and the primary oil pipe is stretched into the inner of the secondary oil pipe 27 In 26, the inner of the secondary oil pipe 27 is additionally provided with position limiting structure 271, for preventing the inner from primary of the secondary oil pipe 27 Skidded off in oil pipe 26, so will drive secondary oil pipe when primary oil pipe encounters position limiting structure as piston rod moves forward Travel forward, without controlling the movement of secondary oil pipe by external action, secondary oil pipe 27 is the motion of hydraulic cylinder Part, the outer end of the secondary oil pipe 27 are connected with the control unit of the first valve mechanism.

Exemplified with a kind of common structure of cylinder body in figure, the cylinder body includes cylinder barrel 21, is connected to the front end of cylinder barrel 21 Cylinder sleeve 22 and be connected to cylinder barrel 21 rear end cylinder bottom 23.In specific implementation, cylinder barrel 21 welds with cylinder bottom 23, before cylinder barrel 21 A cylinder head 29 is welded at end, and then cylinder sleeve 22 is connected by screw thread with cylinder head 29.

In specific implementation, valve body 11 is fixed on the rear end of cylinder bottom 23, it is preferable that the push rod of the first valve element 121 and first 124 be hollow structure, and the secondary oil pipe 27 is connected through the first valve seat 122 with the first push rod 124, and the secondary oil pipe 27 are slidably matched with the first valve seat 122, and so secondary oil pipe can not only drive the first push rod, and can be directly by hydraulic oil Second channel is passed through, in specific implementation, the first valve seat is integrally formed on cylinder bottom, can improve the fitness of cylinder bottom and valve body, side Just installation is fixed between the two.

In one embodiment, first valve element 121 is set in outside the first push rod 124, first valve element 121 it is close There is space between one end of first valve seat 122 and the first push rod 124, the space is stretched into one end of first spring 123, and On first push rod 124 mutually should the opening position in space be provided with first through hole 1241.So design, spring installation is more steady It is fixed, and hydraulic oil can enter between the first valve seat and the first valve element, so as to avoid the formation of vacuum, hinder the fortune of the first valve element It is dynamic.

In one embodiment, the position limiting structure 271 is the body that external diameter is more than the secondary oil pipe 27.Set using this Meter, shaping installation is not only convenient for, and all serves position-limiting action in the circumferential.

In one embodiment, the secondary oil pipe 27 is also located on the piston 25, and the secondary oil pipe 27 and institute State piston 25 to be slidably matched, the rear end of the piston rod 24 is provided with plug 28, and the rear end of the primary oil pipe 26 is blocked up through described First 28 and be fitted on the piston 25, the secondary oil pipe 27 it is inner from the rear end of the primary oil pipe 26 stretch into it is described just In level oil pipe 26.It is reasonable in design using this structure, the gap between primary oil pipe and piston rod can not only be sealed It is stifled, and the open rearward end of primary oil pipe can be blocked.In specific implementation, primary oil pipe is welded as a whole with plug.

In one embodiment, the front end of the piston rod 24 is provided with head 20, and the front end of the primary oil pipe 26 is fixed on In head 20, the first oil duct 201 and the second oil duct 202, first oil duct and primary oil pipe 26 are offered in the head 20 Connection, the gap between second oil duct and primary oil pipe 26 and piston rod 24 connects, in specific implementation, as long as in piston rod The rod chamber and the through hole in the gap of connection hydraulic cylinder are opened up on 24, you can supply by rod chamber of second oil duct to hydraulic cylinder Oil.

In one embodiment, the rear end face of the piston 25 is provided with cushion chamber 251, and the front end face of the cylinder bottom 23 is provided with peace Fill hole 231, be provided with buffer plunger 31 in the mounting hole, the secondary oil pipe 27 pass through buffer plunger 31 and with buffer plunger 31 Gap coordinates.So when piston is close to cylinder bottom, buffer plunger stretches into cushion chamber and plays a part of buffering.

When it is implemented, set stop collar 32 in mounting hole, buffer plunger 31 through stop collar 32 and with the gap of stop collar 32 Coordinate, the inner side of buffer plunger 31 has the flange extended radially out, and the diameter of flange is more than the internal diameter of stop collar, so slow Plunger 31 is rushed effectively to be limited in mounting hole.Be additionally provided with support ring 33 between buffer plunger and secondary oil pipe, support ring with Buffer plunger interfixes, and is slidably matched with secondary oil pipe, support ring plays a part of guiding.

Further, the 3rd oil duct 232 being connected with mounting hole, the third channel are offered on the cylinder bottom 23 113 are connected with the 3rd oil duct 232, and such third channel can be connected by the 3rd oil duct and the rodless cavity of mounting hole and hydraulic cylinder It is logical.

During hydraulic cylinder works, external oil pipe 4 is connected with the first passage on valve body, hydraulic oil by the first oil duct, just The oil circuit that level oil pipe, secondary oil pipe, the first push rod and the first valve element are formed enters second channel, now controls jacking block to make second to lead to Road connects with third channel, and the oil circuit that such hydraulic oil is formed by third channel with the second valve element, the 3rd oil duct, mounting hole enters Enter the rodless cavity of hydraulic cylinder so as to promote piston and piston rod to be moved to the left, when the position limiting structure that piston is moved on secondary oil pipe During present position, i.e., it is moved to the left with position limiting structure, secondary oil pipe and the first coupled push rod, so as to connect second Passage and first passage, if now unclamping jacking block, under the elastic force effect of second spring, the second valve element again by second channel and Third channel blocks so that hydraulic oil can only be from the oil circuit outflow that first passage and external oil pipe are formed, so as to pin hydraulic pressure Cylinder.

When hydraulic oil enters between piston rod and primary oil pipe and into the rod chamber of hydraulic cylinder, if now from the second oil duct Jacking block is unclamped, the second valve element is only in packing state by second spring elastic force, hydraulic cylinder, and piston rod can not move, if now right When jacking block is applied more than the active force of the elastic force of second spring, jacking block promotes the second push rod and then promotes the second valve element to moving to left It is dynamic, so as to connect second channel and third channel so that the hydraulic oil of rodless cavity can pass sequentially through third channel, second logical Road, secondary oil pipe, primary oil pipe are flowed out from the first oil duct, and piston is replied.

It should be understood that example as described herein and embodiment are not limited to the utility model, originally only for explanation Art personnel can make various modifications or change according to it, all within the spirit and principles of the utility model, be made Any modification, equivalent substitution and improvements etc., should be included within the scope of protection of the utility model.

Claims (10)

1. A kind of 1. hydraulic cylinder with valve block, it is characterised in that：Including hydraulic cylinder and valve block, the valve block includes valve body, the valve There is first passage, second channel and third channel in vivo, and the first passage and third channel respectively with second channel It is connected, the first valve mechanism for being used for controlling break-make between first passage and second channel, institute is provided with the second channel The second valve mechanism for being provided with third channel and being used for controlling break-make between second channel and third channel is stated, the hydraulic cylinder Moving component is connected with the control unit of the first valve mechanism, and the third channel connects with the rodless cavity of hydraulic cylinder.
2. 2. the hydraulic cylinder as claimed in claim 1 with valve block, it is characterised in that：The hydraulic cylinder includes cylinder body and and cylinder body The piston rod and piston of cooperation, in addition to primary oil pipe and secondary oil pipe, the piston rod are hollow structure, the primary oil pipe It is fixed in the piston rod, and there is gap between the primary oil pipe and the piston rod, the secondary oil pipe is located in On the cylinder body, and the secondary oil pipe is slidably matched with the cylinder body, and the primary oil is stretched into the inner of the secondary oil pipe In pipe, the outer end of the secondary oil pipe is connected with the control unit of the first valve mechanism, and the inner of the secondary oil pipe is additionally provided with Position limiting structure, for preventing the inner of the secondary oil pipe from being skidded off from primary oil pipe.
3. 3. the hydraulic cylinder as claimed in claim 1 or 2 with valve block, it is characterised in that：First valve mechanism includes first Valve element, the first valve seat, the first spring and the first push rod, first valve element are slidably matched with second channel, and described first pushes away Bar is connected with the first valve element, and first spring is arranged between the first valve element and the first valve seat.
4. 4. the hydraulic cylinder as claimed in claim 3 with valve block, it is characterised in that：During first valve element and the first push rod are Hollow structure, the moving component of the hydraulic cylinder is connected through the first valve seat with the first push rod, and the moving component of the hydraulic cylinder It is slidably matched with the first valve seat.
5. 5. the hydraulic cylinder as claimed in claim 1 or 2 with valve block, it is characterised in that：Second valve mechanism includes second Valve element, the second valve seat, second spring and the second push rod, second valve element are slidably matched with third channel, and described second pushes away Bar is connected with the second valve element, and the second spring is arranged between the second valve element and the second valve seat.
6. 6. the hydraulic cylinder as claimed in claim 5 with valve block, it is characterised in that：Second valve seat is hollow structure, described One end of second push rod is connected through valve body with one end away from the second valve seat of the second valve element, and second push rod and valve body It is slidably matched.
7. 7. the hydraulic cylinder as claimed in claim 6 with valve block, it is characterised in that：Also include dust cover and jacking block, it is described dust-proof Cover is fixed on the outer surface of valve body, and the other end of second push rod is stretched into dust cover, and one end of the jacking block is through dust-proof Cover is connected with the other end of the second push rod, and the jacking block is slidably matched with dust cover.
8. 8. the hydraulic cylinder as claimed in claim 2 with valve block, it is characterised in that：The front end of the piston rod is provided with head, institute The front end for stating primary oil pipe is fixed in head, and the first oil duct and the second oil duct, first oil duct are offered in the head Connected with primary oil pipe, second oil duct connects with the gap between primary oil pipe and piston rod.
9. 9. the hydraulic cylinder as claimed in claim 2 with valve block, it is characterised in that：The cylinder body includes cylinder barrel, is connected to cylinder barrel Front end cylinder sleeve and be connected to cylinder barrel rear end cylinder bottom, the rear end face of the piston is provided with cushion chamber, the cylinder bottom Front end face is provided with mounting hole, and buffer plunger is provided with the mounting hole, and the secondary oil pipe passes through buffer plunger and and bumper post Gap is filled in coordinate.
10. 10. the hydraulic cylinder as claimed in claim 9 with valve block, it is characterised in that：Offered on the cylinder bottom and mounting hole phase 3rd oil duct of connection, the valve body are fixed on the rear end of cylinder bottom, and the third channel is connected with the 3rd oil duct.