CN204163751U - A kind of automatic moving type end hydraulic support - Google Patents
A kind of automatic moving type end hydraulic support Download PDFInfo
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- CN204163751U CN204163751U CN201420654649.0U CN201420654649U CN204163751U CN 204163751 U CN204163751 U CN 204163751U CN 201420654649 U CN201420654649 U CN 201420654649U CN 204163751 U CN204163751 U CN 204163751U
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Abstract
The utility model discloses a kind of automatic moving type end hydraulic support, comprise hinged side arm and after-frame; Described side arm comprises outer base I, interior base I, outer back timber I, interior back timber I, first front column, the second front column, be hinged with advancing jack for connecting the outer tie rod I of outer base I with between the inside connecting rod I for being connected interior base I, the front end face of outer tie rod I is provided with ramp plate; Described after-frame comprises outer base II, interior base II, outer back timber II, interior back timber II, first central post, the second central post, the first rear column, the second rear column, and after-frame afterbody is also hinged with the system for compacting for compacting goaf filler.This end hydraulic support has double-deck supporting and protection structure, effective support head top part and sidewall, and supporting area is large, intensity is high; Achieve certainly moving of hydraulic support, in its moving process, the crown, opposite end plate carries out supporting all the time simultaneously, while reduction working strength, significantly improve operating efficiency and operational security.
Description
Technical field
The utility model relates to the support apparatus that a kind of underground coal mine uses, and particularly relates to a kind of automatic moving type end hydraulic support.
Background technology
On underground coal mine coal-face, tunnel is called termination with the intersection of cutting eye, and the supporting for position, termination is called end support.Position, termination is the joint of the equipment such as drag conveyor and elevating conveyor, is again the throat of walkway, ventilation, haul and defeated coal.The quality of end support is the key point determining that can work plane normally run.According to regarding safety department statistics, the human casualty accident occurred at position, termination accounts for the over half of down-hole accident, must draw attention.
At present, coal-face termination is the support pattern adopting hydraulic prop to be equipped with anchor net still more, but this supporting method has many deficiencies.The support force of hydraulic prop and Area of bearing are all less, and supporting effect is poor.And, when support, scratch board conveyor with cut eye move forward time, need the hydraulic prop cutting a two ends to unload one by one, then artificial being transported to is treated exploiting field section, is re-started pressurization supporting again; Because these hydraulic prop weight and length are all comparatively large, carry very difficult in the tunnel of limited height, the labour intensity of workman is very large, inefficiency; And after partial monosomy hydraulic prop is unloaded, the top board of relevant position, tunnel can lose effective supporting, likely occurs the situation of crushing, danger is comparatively large, and the safety problem of workman cannot obtain effective guarantee.
Utility model content
The utility model technical issues that need to address are to provide a kind of automatic moving type end hydraulic support, and the supporting area of this hydraulic support is large, supporting intensity is high, and can realize from moving, and safety factor is high.
For solving the problems of the technologies described above, the technical scheme that the utility model adopts is:
A kind of automatic moving type end hydraulic support, comprises side arm and after-frame;
Described side arm comprises symmetrically arranged two outer base I, be positioned at two bases I inside outer base I, above outer base I, interior base I, be respectively arranged with the outer back timber I corresponding with it, interior back timber I; Between outer base I and outer back timber I, be hinged with telescopic first front column, between interior base I and interior back timber I, be hinged with telescopic second front column; The front end of two outer base I is connected by outer tie rod I, is connected between two interior bases I by inside connecting rod I, and the front end of two outer back timbers I is connected by outer back timber connecting rod I, and the upper surface of two interior back timbers I is connected by roof supporting I; Advancing jack is hinged with between described outer tie rod I and inside connecting rod I;
Described after-frame comprises symmetrically arranged two outer base II, be positioned at two bases II inside outer base II, above outer base II, interior base II, be respectively arranged with the outer back timber II corresponding with it, interior back timber II; At the rear and front end of outer base II difference hinged first central post, the first rear column, the top of the first central post and the first rear column is hinged on outer back timber II; At the rear and front end of interior base II difference hinged second central post, the second rear column, the top of the second central post and the second rear column is hinged on interior back timber II; Be connected by inside connecting rod II between described two interior bases II, the upper surface of two interior back timbers II is connected by roof supporting II;
Be between back timber and interior back timber II in described outer base I and outer base II, interior base I and interior base II, outer back timber I and outer back timber II, side arm and be articulated and connected.
Further improvement of the utility model is: described after-frame afterbody is also hinged with system for compacting, and system for compacting comprises hinged casing, balance arm, extensible canopy and coal pressing plate; Described hinged casing is fixedly connected with the rear end of two interior bases II, the lower hinge balance arm of hinged casing, upper articulation are for driving the balance arm jack of balance arm, the inside of described balance arm is provided with the extensible canopy of compacting jack driving, and the tail end of extensible canopy connects the coal pressing plate realizing compacting.
Further improvement of the utility model is: between the first central post and the first rear column, be also provided with the first quadric chain, between the second central post and the second rear column, be also provided with the second quadric chain.
Further improvement of the utility model is: described first quadric chain is made up of connecting rod on outer base II, first front rod, the first back link and first; First front rod, the first back link are hinged in outer base II, and on first, lower end hinged with outer back timber II, the top of connecting rod is connected with the first back link with the first front rod;
Described second quadric chain is made up of connecting rod on interior base II, second front rod, the second back link and second; Second front rod, the second back link are hinged on interior base II, and on second, lower end hinged with interior back timber II, the top of connecting rod is connected with the second back link with the second front rod.
Further improvement of the utility model is: the front end of described outer base I is connected with outer tie rod I by extension bar; The front end face of outer tie rod I is provided with ramp plate.
Further improvement of the utility model is: the arranged outside of described outer back timber I has side guard board I, and the arranged outside of outer back timber II has side guard board II.
Further improvement of the utility model is: described first front column, the second front column, the first central post, the second central post, the first rear column and the second rear column are multi-stage expansion oil cylinder.
Further improvement of the utility model is: described inside connecting rod II is 1 ~ 2, and ramp plate is 8 ~ 12, and advancing jack is 2.
Further improvement of the utility model is: described roof supporting I, roof supporting II are formed by some pieces of board material splices.
Owing to have employed technique scheme, the technological progress that the utility model obtains is:
The utility model provides a kind of automatic moving type end hydraulic support.This end hydraulic support has double-deck supporting and protection structure, carries out supporting by roof supporting I, roof supporting II pair of head top part, carries out supporting by side guard board I, side guard board II pair of termination sidewall, and supporting area is large, and supporting intensity is high.The utility model can be realized from moving by hydraulic-driven, and without the need to a dead lift, greatly reduce working strength, operating efficiency significantly improves; In the moving process of hydraulic support, can carry out effective support by the crown, opposite end plate all the time, avoid crushing, the security performance of underground work improves greatly.The utility model while supporting termination, can carry out compacting by system for compacting to goaf filler, completes supporting and compacting two operations simultaneously, substantially increases operating efficiency, saved the activity duration.
Between outer base I of the present utility model, between interior base I, between outer back timber I, between interior back timber I, between interior base II, between interior back timber II, be provided with multiple linkage, the direction disunity of end hydraulic support in moving process can be avoided, ensure that the globality of end hydraulic support in moving process, ensure end support effect further.
Front back timber I, front back timber II, rear back timber I, rear back timber II are propped by many root posts by the utility model, realize effective support by roof supporting I, roof supporting II pair of head top part; Multi-stage expansion oil cylinder selected by column used, can effective support to the termination of differing heights; Be respectively arranged with side guard board I and side guard board II outside back timber I and outer back timber II outside, adapted to the termination of different in width by the driving of thruster jack.The utility model also includes multiple quadric chain, can improve the stability of hydraulic support, and adapts to irregular termination top board, practical.
Ramp plate of the present utility model, can remove the float coal on ground, front, ensure that the smooth and easy movement of end hydraulic support in end hydraulic support moving process.
Accompanying drawing explanation
Fig. 1 is main TV structure schematic diagram of the present utility model;
Fig. 2 is left TV structure schematic diagram of the present utility model;
Fig. 3 is the A-A sectional view of Fig. 1;
Fig. 4 is Undercarriage structure schematic diagram of the present utility model;
Fig. 5 is the structural representation of the utility model system for compacting;
Fig. 6 is the top view of the utility model system for compacting.
Wherein, 1-1, outer base I, 1-2, interior base I, 1-3, outer back timber I, 1-4, interior back timber I, 1-51, first front column, 1-52, second front column, 1-6, outer tie rod I, 1-7, inside connecting rod I, 1-8, outer back timber connecting rod I, 1-9, advancing jack, 1-10, roof supporting I, 1-11, extension bar, 1-12, ramp plate, 1-13, side guard board I, 2-1, outer base II, 2-2, interior base II, 2-3, outer back timber II, 2-4, interior back timber II, 2-51, first central post, 2-61, first rear column, 2-7, inside connecting rod II, 2-81, balance arm, 2-82, extensible canopy, 2-83, balance arm jack, 2-84, coal pressing plate, 2-85, hinged casing, 2-911, first front rod, 2-912, second front rod, 2-921, first back link, 2-931, connecting rod on first, 2-932, connecting rod on second, 2-10, roof supporting II, 2-11, side guard board II.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further details:
A kind of automatic moving type end hydraulic support, as shown in Figure 1, Figure 2, Figure 3, Figure 4, comprises the side arm and after-frame two parts that are hinged and connected.
Described side arm comprises symmetrically arranged two outer base I 1-1, is symmetrically arranged with two interior base I 1-2 inside two outer base I 1-1; Above outer base I 1-1, correspondence is provided with outer back timber I 1-3, and above interior base I 1-2, correspondence is provided with interior back timber I 1-4.Outer base I 1-1 is hinged with the first front column 1-51, and the top of the first front column 1-51 is hinged on outer back timber I 1-3; Interior base I 1-2 is hinged with the second front column 1-52, and the top of the second front column 1-52 is hinged on interior back timber I 1-4.The front end of outer base I 1-1 is fixedly connected with extension bar 1-11, and the front end of two extension bar 1-11 is fixedly linked by outer tie rod I 1-6; The front end of two outer back timber I 1-3 is connected by outer back timber connecting rod I 1-8; Arranged by above-mentioned connection, make stable between two outer base I 1-1, outer back timber I 1-3 being connected, when hydraulic support moves the uniformity that effectively ensure that outer base movement in process.Be connected by inside connecting rod I 1-7 between two interior base I 1-2, in order to ensure that inside connecting rod I 1-7 is arranged in the middle part of interior base I 1-2 by the stable of connection.
Described outer tie rod I 1-6 is rectangular shaft, and the front end face of outer tie rod I 1-6 is provided with ramp plate 1-12; Ramp plate 1-12 can root out float coal bottom tunnel, to facilitate the movement of hydraulic support.Ramp plate 1-12 is for removably connecting, and its number can be selected according to the actual conditions of mine, usually uniformly arranges 8 ~ 12.Symmetrically arranged two advancing jack 1-9 are hinged with between outer tie rod I 1-6 and inside connecting rod I 1-7; Advancing jack 1-9 stretches out, and can drive moving forward of two outer base I 1-1; Advancing jack 1-9 retracts, and two interior base I 1-2 can be driven to move backward, thus realizes end hydraulic support certainly the moving of both direction forwards, backwards.The upper surface of two interior back timber I 1-4 is connected by roof supporting I 1-10, forms effective support of the crown, opposite end plate and the connection between stable interior back timber I 1-4; The outside of back timber I 1-3 is also provided with side guard board I 1-13 outside, for carrying out effective support to termination sidewall.
Described after-frame comprises symmetrically arranged two outer base II 2-1, is symmetrical arranged two interior base II 2-2 in the inner side of two outer base II 2-1; Be correspondingly provided with outer back timber II 2-3 above outer base II 2-1, above interior base II 2-2, be correspondingly provided with interior back timber II 2-4.At the rear and front end of outer base II 2-1 difference hinged first central post 2-51, the first rear column 2-61, the top of the first central post 2-51 and the first rear column 2-61 is hinged on outer back timber II 2-3; At the rear and front end of interior base II 2-2 difference hinged second central post, the second rear column, the top of the second central post and the second rear column is hinged on interior back timber II 2-4.Be connected by inside connecting rod II 2-7 between described two interior base II 2-2, inside connecting rod II is set to two, to guarantee the uniformity of movement between two interior base II 2-2.The upper surface of two interior back timber II 2-4 is connected by roof supporting II 2-10, forms effective support of the crown, opposite end plate and the connection between stable interior back timber II 2-4; The outside of outer back timber II 2-3 is also provided with side guard board II 2-11, for effectively supporting termination sidewall.
The first quadric chain is hinged with outside, to increase the stability of support below back timber II 2-3; Described first quadric chain, between the first central post 2-51 and the first rear column 2-61, is made up of connecting rod 2-931 on outer base II 2-1, the first front rod 2-911, the first back link 2-921 and first; It is hinged that one end of first front rod 2-911, the first back link 2-921 is hinged on connecting rod 2-931 on outer base II 2-1, on the other end and first, and on first, the top of connecting rod 2-931 is hinged on outer back timber II 2-3.The second quadric chain is hinged with below interior back timber II 2-4; Described second quadric chain, between the second central post and the second rear column, is made up of connecting rod 2-932 on interior base II 2-2, the second front rod 2-912, the second back link and second; One end of second front rod 2-912, the second back link is hinged on interior base II 2-2, the other end is hinged on connecting rod 2-932 lower end on second, on second the top of connecting rod 2-932 and interior back timber II 2-4 hinged.
Described after-frame afterbody is also connected with system for compacting, and system for compacting can carry out compression compacting to tunnel filler, adds the stability in tunnel, effectively avoids landslide.As shown in Fig. 1, Fig. 5, Fig. 6, described system for compacting comprises hinged casing 2-85, balance arm 2-81, extensible canopy 2-82 and coal pressing plate 2-84.Described hinged casing 2-85 is fixedly connected on the rear end of two interior base II 2-2, the lower hinge of hinged casing 2-85 has balance arm 2-81, hinged casing 2-85 upper articulation has the balance arm jack 2-83 for driving balance arm 2-81, by the driving of balance arm jack 2-83, swinging up and down of balance arm 2-81 can be promoted, regulate compacting height.Balance arm 2-81 inside is provided with compacting jack and extensible canopy 2-82, and extensible canopy 2-82 is driven by compacting jack and completes flexible; The tail end of extensible canopy 2-82 connects the coal pressing plate 2-84 for compressing filler.
Described outer base I 1-1 and outer base II 2-1, interior base I 1-2 and interior base II 2-2, outer back timber I 1-3 and all pass through hinge between outer back timber II 2-3, interior back timber I 1-4 and interior back timber II 2-4.
Described first front column 1-51, the second front column 1-52, the first central post 2-51, the second central post, the first rear column 2-61 and the second rear column are multi-stage expansion oil cylinder, can carry out flexible adjustment, effectively ensure the intensity of supporting according to termination height.
According to the concrete condition of termination, down-hole, roof supporting I 1-10, roof supporting II 2-10 can select one block of whole plate, or be spliced by multi-sheets.When termination top board is comparatively smooth, roof supporting I, roof supporting II select whole plate, strengthen supporting effect; When termination top board is uneven, roof supporting I, roof supporting II select many plates to splice, termination top board of can fitting to greatest extent, ensure supporting effect.
The outer face of described side guard board I 1-13 and outer back timber I 1-3, between side guard board II 2-11 and the outer face of outer back timber II 2-3, be all connected with thruster jack; Along with stretching out of thruster jack, drive side guard board outwards movement, adapt to the width of different termination with this, realize the effective support to termination sidewall.
Use procedure of the present utility model is:
When tunnel extend forward, need mobile end hydraulic support time, first the unloading of the first front column, the first central post and the first rear column is retracted, makes outer back timber I, outer back timber II leaves termination top board; Advancing jack is driven to stretch out forward, and then promote outer base I, outer back timber I, outer base II, outer back timber II entirety moves forward a step pitch, then the first front column, the first central post and the first rear column are loaded and stretch out, make outer back timber I, outer back timber II stretching back again.Then, then the second front column, the second central post, the second rear column unloading are retracted, namely, back timber I, interior back timber II leave back; Driving advancing jack is regained, and then pull inside connecting rod I, interior base I, interior back timber I, interior base II, interior back timber II entirety is made to move forward a step pitch, again the second front column, the second central post, the second rear column are loaded and stretch out, make interior back timber I, interior back timber II stretching back again.Alternately move forward according to the method described above, until end hydraulic support moves to new supporting position, realize the uninterrupted support of termination top board and certainly moving of hydraulic support.
In the reach process of end hydraulic support, ground for front float coal can be removed by ramp plate, makes the movement of end hydraulic support smooth and easy.
The utility model product can carry out compacting to goaf filler while supporting termination, by system for compacting.After filler is filled, the balance arm jack of end hydraulic pillar stretches out, drive balance arm to suitable compacting height, then drives extensible canopy to stretch out by compacting jack, utilizes coal pressing plate to carry out compacting to filler; After completing a compacting, balance arm is regained and is lifted under the drive of balance arm jack, and compacting jack drives extensible canopy to get back to original position.And then repeat balance arm puts down, extensible canopy stretches out, this compacting process of coal pressing plate compacting.Through the repeatedly repetition operation of system for compacting, complete the Effective Compaction to filler.
Claims (9)
1. an automatic moving type end hydraulic support, is characterized in that: described hydraulic support comprises side arm and after-frame;
Described side arm comprises symmetrically arranged two outer base I (1-1), is positioned at two bases I (1-2) of outer base I (1-1) inner side, is respectively arranged with the outer back timber I (1-3) corresponding with it, interior back timber I (1-4) in outer base I (1-1), interior base I (1-2) top; Between outer base I (1-1) and outer back timber I (1-3), be hinged with telescopic first front column (1-51), between interior base I (1-2) and interior back timber I (1-4), be hinged with telescopic second front column (1-52); The front end of two outer base I (1-1) is connected by outer tie rod I (1-6), be connected by inside connecting rod I (1-7) between two interior bases I (1-2), the front end of two outer back timbers I (1-3) is connected by outer back timber connecting rod I (1-8), and the upper surface of two interior back timbers I (1-4) is connected (1-10) by roof supporting I; Advancing jack (1-9) is hinged with between described outer tie rod I (1-6) and inside connecting rod I (1-7);
Described after-frame comprises symmetrically arranged two outer base II (2-1), is positioned at two bases II (2-2) of outer base II (2-1) inner side, is respectively arranged with the outer back timber II (2-3) corresponding with it, interior back timber II (2-4) in outer base II (2-1), interior base II (2-2) top; At hinged first central post (2-51) of the rear and front end of outer base II (2-1) difference, the first rear column (2-61), the top of the first central post (2-51) and the first rear column (2-61) is hinged on outer back timber II (2-3); At the rear and front end of interior base II (2-2) difference hinged second central post, the second rear column, the top of the second central post and the second rear column is hinged on interior back timber II (2-4); Be connected by inside connecting rod II (2-7) between described two interior bases II (2-2), the upper surface of two interior back timbers II (2-4) is connected (2-10) by roof supporting II;
Be between back timber (1-4) and interior back timber II (2-4) in described outer base I (1-1) and outer base II (2-1), interior base I (1-2) and interior base II (2-2), outer back timber I (1-3) and outer back timber II (2-3), side arm and be articulated and connected.
2. a kind of automatic moving type end hydraulic support according to claim 1, is characterized in that:
Described after-frame afterbody is also hinged with system for compacting; System for compacting comprises hinged casing (2-85), balance arm (2-81), extensible canopy (2-82) and coal pressing plate (2-84); Described hinged casing (2-85) is fixedly connected with the rear end of two interior bases II (2-2), the lower hinge balance arm (2-81) of hinged casing (2-85), upper articulation are for driving the balance arm jack (2-83) of balance arm (2-81), the inside of described balance arm (2-81) is provided with the extensible canopy (2-82) of compacting jack driving, and the tail end of extensible canopy (2-82) connects the coal pressing plate (2-84) realizing compacting.
3. a kind of automatic moving type end hydraulic support according to claim 2, it is characterized in that: between the first central post (2-51) and the first rear column (2-61), be also provided with the first quadric chain, between the second central post and the second rear column, be also provided with the second quadric chain.
4. a kind of automatic moving type end hydraulic support according to claim 3, is characterized in that: described first quadric chain is made up of connecting rod (2-931) on outer base II (2-1), the first front rod (2-911), the first back link (2-921) and first; First front rod (2-911), the first back link (2-921) are hinged in outer base II (2-1), and on first, lower end hinged with outer back timber II (2-3), the top of connecting rod (2-931) is connected with the first back link (2-921) with the first front rod (2-911);
Described second quadric chain is made up of connecting rod (2-932) on interior base II (2-2), the second front rod (2-912), the second back link and second; Second front rod (2-912), the second back link are hinged on interior base II (2-2), and on second, lower end hinged with interior back timber II (2-4), the top of connecting rod (2-932) is connected with the second back link with the second front rod (2-912).
5. a kind of automatic moving type end hydraulic support according to claim 4, is characterized in that: the front end of described outer base I (1-1) is connected with outer tie rod I (1-6) by extension bar (1-11); The front end face of outer tie rod I (1-6) is provided with ramp plate (1-12).
6. a kind of automatic moving type end hydraulic support according to claim 5, is characterized in that: the arranged outside of described outer back timber I (1-3) has side guard board I (1-13), and the arranged outside of outer back timber II (2-3) has side guard board II (2-11).
7. a kind of automatic moving type end hydraulic support according to claim 6, is characterized in that: described first front column (1-51), the second front column (1-52), the first central post (2-51), the second central post, the first rear column (2-61) and the second rear column are multi-stage expansion oil cylinder.
8. a kind of automatic moving type end hydraulic support according to claim 7, is characterized in that: described inside connecting rod II (2-7) is 1 ~ 2, and ramp plate (1-12) is 8 ~ 12, and advancing jack (1-9) is 2.
9. a kind of automatic moving type end hydraulic support according to any one of claim 1 ~ 8, is characterized in that: described roof supporting I (1-10), roof supporting II (2-10) are formed by some pieces of board material splices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420654649.0U CN204163751U (en) | 2014-11-05 | 2014-11-05 | A kind of automatic moving type end hydraulic support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420654649.0U CN204163751U (en) | 2014-11-05 | 2014-11-05 | A kind of automatic moving type end hydraulic support |
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| Publication Number | Publication Date |
|---|---|
| CN204163751U true CN204163751U (en) | 2015-02-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420654649.0U Withdrawn - After Issue CN204163751U (en) | 2014-11-05 | 2014-11-05 | A kind of automatic moving type end hydraulic support |
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| CN (1) | CN204163751U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314597A (en) * | 2014-11-05 | 2015-01-28 | 冀中能源股份有限公司 | Self-moving end hydraulic support |
| CN104975865A (en) * | 2015-07-08 | 2015-10-14 | 三一重型装备有限公司 | Comprehensive mechanized coal mining face end head hydraulic rack |
| CN108547651A (en) * | 2018-06-11 | 2018-09-18 | 山东天晟机械装备股份有限公司 | A kind of advanced hydraulic support with tunneling boring protection erosion control effect |
| CN108590746A (en) * | 2018-05-31 | 2018-09-28 | 神华宁夏煤业集团有限责任公司梅花井煤矿 | A kind of foundation-free installation system for fixing ribbon conveyer |
-
2014
- 2014-11-05 CN CN201420654649.0U patent/CN204163751U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314597A (en) * | 2014-11-05 | 2015-01-28 | 冀中能源股份有限公司 | Self-moving end hydraulic support |
| CN104314597B (en) * | 2014-11-05 | 2016-07-06 | 冀中能源股份有限公司 | A kind of automatic moving type end hydraulic support |
| CN104975865A (en) * | 2015-07-08 | 2015-10-14 | 三一重型装备有限公司 | Comprehensive mechanized coal mining face end head hydraulic rack |
| CN108590746A (en) * | 2018-05-31 | 2018-09-28 | 神华宁夏煤业集团有限责任公司梅花井煤矿 | A kind of foundation-free installation system for fixing ribbon conveyer |
| CN108590746B (en) * | 2018-05-31 | 2023-11-03 | 国家能源集团宁夏煤业有限责任公司 | Non-foundation installation system for fixing belt conveyor |
| CN108547651A (en) * | 2018-06-11 | 2018-09-18 | 山东天晟机械装备股份有限公司 | A kind of advanced hydraulic support with tunneling boring protection erosion control effect |
| CN108547651B (en) * | 2018-06-11 | 2023-12-19 | 山东天晟机械装备股份有限公司 | Advanced hydraulic support with full-section protection and anti-impact effects |
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