Clamping chain structure used at front end of hydraulic support adjusting and moving device

Abstract

The invention relates to the field of clamping chain structures, in particular to a clamping chain structure for the front end of a hydraulic support adjusting and moving device. The chain limiting part is mounted on the vertical side of the mounting plate and is provided with a first plate block and a second plate block, and the second plate block is driven by a driving mechanism to rotate at an included angle on the upper base surface of the first plate block so as to realize a clamping state and a loosening state; in a clamping state, the second plate block is horizontally attached to the first plate block, and chain clamping is achieved; an acute angle is formed between the second plate block and the first plate block in a relaxed state, so that chain loosening is realized; chain lifting assemblies are symmetrically installed on the two sides of the second plate block, the chain lifting assemblies and the second plate block act synchronously, and the chain lifting assemblies have the effect of synchronously lifting the chain when the chain is loosened; according to the structure, automatic adjustment of the length of the chain is achieved through cooperation of the clamping and loosening states of the chain and the chain wheel, the automation degree of the structure is improved, time generated in the middle adjustment process is saved, the labor intensity of underground workers is lowered, and hidden dangers in the withdrawing work process are reduced.

Description

Technical Field

[0001] The present invention relates to the field of chain clamping structures, and in particular to a chain clamping structure for the front end of a hydraulic support displacement device. Background Art

[0002] During the use of a hydraulic support displacement device, it is necessary to use a chain to pull and drive the hydraulic support. One end of the chain needs to be connected to the pin shaft mechanism at the front end of the telescopic arm of the hydraulic support modulation device and fixed with a shackle, and the other end is connected to the hydraulic support to be withdrawn;

[0003] Although this method can achieve the function of dragging the hydraulic support, limited by the length of the connected chain and the rotation and telescopic range of the hydraulic support displacement device, it is necessary to manually disassemble and assemble the chain from time to time to change the length of the chain and re-fix the chain on the hydraulic support displacement device. For large-sized chains, this disassembly and assembly method requires a large amount of manpower, and the chain itself is very heavy, which undoubtedly brings safety risks to the withdrawal work of the hydraulic support and also affects the work efficiency. Summary of the Invention

[0004] In view of the problems existing in the above-mentioned existing chain clamping structure for the front end of a hydraulic support displacement device, the present invention is proposed.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a chain clamping structure for the front end of a hydraulic support displacement device, including,

[0006] A mounting plate;

[0007] A chain limiting part, installed on the vertical side of the mounting plate, which has a first plate and a second plate. The second plate is driven by a driving mechanism to rotate at an angle on the upper base surface of the first plate to achieve two states of clamping / relaxing;

[0008] In the clamping state, the second plate is horizontally attached to the first plate to achieve chain clamping;

[0009] In the relaxing state, an acute angle is formed between the second plate and the first plate to achieve chain loosening;

[0010] Lifting chain components are symmetrically installed on both sides of the second plate. The lifting chain components act synchronously with the second plate and have the function of synchronously lifting the chain when the chain is loosened.

[0011] In a preferred embodiment of the chain clamping structure for the front end of a hydraulic support displacement device according to the present invention: a chain groove is opened on the upper base surface of the first plate, and the chain groove is used to clamp the chain.

[0012] In a preferred embodiment of the chain clamping structure for the front end of a hydraulic support displacement device according to the present invention: the chain groove is divided into an open groove and a communicating groove;

[0013] There are two said open slots, and the two said open slots are symmetrically arranged on the first plate for clamping into two adjacent horizontal chain links on the chain;

[0014] The connecting slot penetrates through two adjacent open slots for clamping into the vertical chain link connecting two adjacent horizontal chain links on the chain.

[0015] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: the connecting slot is strip-shaped, and its opening depth is greater than the slot depth of the open slot;

[0016] The depth of the connecting slot is used to ensure that when the vertical chain link is clamped in, the vertical chain link will not protrude above the upper base surface of the first plate.

[0017] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: when the second plate is in the clamping state, the center of its bottom fits at the intersection of the connecting slot and the open slot.

[0018] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: one side of the second plate is provided with a support rod, and the support rod is rotatably connected to the mounting plate through a rotating seat;

[0019] The second plate makes a circular motion with the rotating seat as the fulcrum to realize the conversion between the clamping / relaxing states.

[0020] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: the driving mechanism includes a telescopic member;

[0021] Both ends of the telescopic member are respectively connected to the mounting plate and the second plate through rotating members, and the second plate is driven to rotate with the rotating seat as the fulcrum by the extension / retraction of the telescopic member.

[0022] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: the open slot has a slot bottom, a first slot side, a second slot side, and a third slot side.

[0023] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: the first slot side and the second slot side are vertically arranged and form a 90° angle with the slot bottom;

[0024] The third slot side is obliquely arranged and forms a 120° angle with the slot bottom.

[0025] In a preferred embodiment of the chain clamping structure for the front end of the hydraulic support displacement device according to the present invention: the chain lifting components are symmetrically arranged on both sides of the support rod and move synchronously with the second plate, and each has a bending section and a lifting section;

[0026] In the clamped state, the lifting section is located below the chain.

[0027] In the relaxed state, the bending section rotates upward with the second plate, driving the lifting section to lift the chain stuck in the chain groove.

[0028] The beneficial effects of the present invention are as follows: This structure eliminates the process of manually disassembling and assembling to change the chain length. Through the cooperation of the clamped and relaxed states of the chain and the sprocket, the automatic adjustment of the chain length is realized, improving the automation degree of the structure, saving the time generated in the intermediate adjustment process, reducing the labor intensity of underground workers, and reducing the potential hazards in the withdrawal process. Brief Description of the Drawings

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present invention and do not limit the present invention. Among them:

[0030] Figure 1 Shows a three-dimensional structure diagram of the chain clamping structure at the front end of the hydraulic support transfer device;

[0031] Figure 2 Shows Figure 1 An enlarged structure diagram at position A in

[0032] Figure 3 Shows a structure diagram of the chain clamping structure at the front end of the hydraulic support transfer device in the clamped state;

[0033] Figure 4 Shows a structure diagram of the chain clamping structure at the front end of the hydraulic support transfer device in the relaxed state;

[0034] Figure 5 Shows a structure diagram of the chain groove in the chain clamping structure at the front end of the hydraulic support transfer device;

[0035] Figure 6 Shows a side view of the first plate in the chain clamping structure at the front end of the hydraulic support transfer device. Detailed Description of the Embodiments

[0036] In order to enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below in conjunction with the specific embodiments and the drawings.

[0037] The terms used in the present invention are those general terms currently widely used in the art in consideration of the functions of the present invention. However, these terms may vary according to the intentions of those of ordinary skill in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but based on the meanings of the terms and the overall description of the present invention.

[0038] Referring to Figures 1-4 , this embodiment provides a chain clamping structure for the front end of a hydraulic support displacement device, including

[0039] A mounting plate 1, mounted on the front end of the hydraulic support displacement device;

[0040] A chain limiting part 2, mounted on the vertical side of the mounting plate 1, which has a first plate 21 and a second plate 22. The second plate 22 is driven by a driving mechanism 23 to rotate at an angle on the upper base surface of the first plate 21 to achieve two states of clamping / relaxing;

[0041] In the clamped state, the second plate 22 is horizontally attached to the first plate 21 to achieve chain clamping;

[0042] In the relaxed state, an acute angle is formed between the second plate 22 and the first plate 21 to achieve chain loosening;

[0043] Lifting chain components 24 are symmetrically mounted on both sides of the second plate 22. The lifting chain components 24 act synchronously with the second plate 22 and have the function of synchronously lifting the chain when the chain is loosened.

[0044] Specifically, a sprocket is assembled on the hydraulic support displacement device. One end of the chain is wound around the sprocket. Through the rotation of the sprocket, the chain is wound onto the sprocket, and the length of the chain used is adjusted by the amount of winding. The other end of the chain is locked by the clamping state between the second plate 22 and the first plate 21 and is hung on the support to be withdrawn. The hydraulic support displacement device's swing arm function is used to pull it out to complete the removal of the hydraulic support. As the support to be withdrawn gets farther or closer, the length of the chain needs to be adjusted;

[0045] During adjustment, the driving mechanism 23 drives the second plate 22 to flip to the relaxed state. In this state, the lifting chain components 24 act synchronously with the second plate 22 and have the function of synchronously lifting the chain when the chain is loosened. At this time, the length of the chain is adjusted by the rotation of the sprocket;

[0046] This structure eliminates the process of manually disassembling and assembling to change the chain length. By the cooperation of the tightened and relaxed states of the chain and the sprocket wheel, the automatic adjustment of the chain length is realized, which improves the automation degree of the structure, saves the time generated in the intermediate adjustment process, reduces the labor intensity of underground workers, and reduces the potential hazards in the withdrawal work process.

[0047] The driving mechanism 23 includes a telescopic member 231;

[0048] Both ends of the telescopic member 231 are respectively connected to the mounting plate 1 and the second plate 22 through rotating members 232, and the second plate 22 is driven to rotate with the rotating seat as the fulcrum by the extension / retraction of the telescopic member 231.

[0049] Specifically, the telescopic member 231 adopts a hydraulic rod, which has a fixed end and a telescopic end. The fixed end is installed on the mounting plate 1 through one of the rotating members 232, and the telescopic end is installed above the second plate 22 through the other rotating member 232;

[0050] In the tightened state, the telescopic end extends from the fixed end. In the relaxed state, the telescopic end retracts into the fixed end;

[0051] At the position of the mounting plate 1 corresponding to the rotating member 232, there is a notch, which is used to avoid the interference problem when the telescopic member 231 expands and contracts.

[0052] The chain lifting assembly 24 is symmetrically arranged on both sides of the support rod and moves synchronously with the second plate 22. It has a bending section and a lifting section;

[0053] In the tightened state, the lifting section is located below the chain;

[0054] In the relaxed state, the bending section rotates upward with the second plate 22, driving the lifting section to lift the chain stuck in the chain groove 25.

[0055] Specifically, there are two sections in the lifting section, which are divided into a vertical section and an inclined section. The length of the vertical section is 55 mm, and the included angle between the vertical section and the inclined section is 154°. Therefore, when changing from the closed state to the anti-loosening state, the upwardly warped inclined section can effectively limit the forward movement of the chain and prevent the chain from disengaging when it opens.

[0056] Specifically, a chain groove 25 is provided on the upper base surface of the first plate 21, and the chain groove 25 is used to hold the chain. The lifting sections are located on both sides of the second plate 22. In the tightened state, the chain is placed on the lifting sections, and the lifting angle of the lifting sections is 0 - 26°. In the relaxed state, it flips with the second plate 22 and lifts the chain from the chain groove 25. At this time, the chain can be wound by the sprocket wheel, thereby realizing the required length adjustment.

[0057] As an alternative embodiment:

[0058] Refer to Figures 5-6, in an embodiment provided by the present application,

[0059] The chain groove 25 is divided into an opening groove 251 and a communicating groove 252. There are two opening grooves 251, and the two opening grooves 251 are symmetrically arranged on the first plate 21 and are used for clamping two adjacent horizontal chain links on the chain. The communicating groove 252 penetrates through two adjacent opening grooves 251 and is used for clamping the vertical chain link connecting two adjacent horizontal chain links on the chain;

[0060] Specifically, the depth of the opening groove 251 is the same as the diameter of the chain. The communicating groove 252 is strip-shaped, and its opening depth is greater than the groove depth of the opening groove 251. The depth of the communicating groove 252 is used to ensure that when the vertical chain link is clamped, the vertical chain link will not protrude above the upper base surface of the first plate 21. This design not only restricts the movement of the chain but also avoids the problem of the chain being crushed.

[0061] In the clamped state, the bottom center of the second plate 22 fits at the intersection of the communicating groove 252 and the opening groove 251. One side of the second plate 22 is provided with a support rod, and the support rod is rotatably connected to the mounting plate 1 through a rotating seat. The second plate 22 makes a circular motion with the rotating seat as the fulcrum to realize the conversion between the clamped / relaxed states.

[0062] Specifically, the opening groove 251 has a groove bottom 2511, a first groove side 2512, a second groove side 2513, and a third groove side 2514. The first groove side 2512 and the second groove side 2513 are vertically arranged and form a 90° angle with the groove bottom 2511. The third groove side 2514 is obliquely arranged and forms a 120° angle with the groove bottom 2511. When the chain is lifted by the chain lifting assembly 24, a force is applied from the third groove side 2514, and the oblique arrangement ensures that there is no interference problem during the process of lifting the chain out.

[0063] Specifically, the chain limiting part 2 further includes an auxiliary ejection assembly 26 for ejection. The auxiliary ejection assembly 26 is located at the intersection of the communicating groove 252 and the opening groove 251 and includes a jacking block and a spring. The two ends of the spring are respectively fixedly connected to the jacking block and the communicating groove 252. When opened, it can cooperate with the two side chain lifting assemblies 24 to lift most of the chain in the chain groove 25 out, avoiding the problem that the chain contraction is blocked in the relaxed state; in the locked state, it remains in a compressed state under the downward pressure of the telescopic member 231, and the spring returns to its original state when unlocking.

[0064] Finally, it should be noted that the methods and devices described in detail above are only embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A chain clamping structure for the front end of a hydraulic support displacement device, characterized in that: Including, Mounting plate (1); Chain limiting part (2), mounted on the vertical side of the mounting plate (1), which has a first plate (21) and a second plate (22), and the second plate (22) is driven by a driving mechanism (23) to rotate at an angle on the upper base surface of the first plate (21) to achieve two states of clamping / relaxing; In the clamped state, the second plate (22) is horizontally attached to the first plate (21) to clamp the chain; In the relaxed state, an acute angle is formed between the second plate (22) and the first plate (21) to loosen the chain; Lifting chain components (24) are symmetrically installed on both sides of the second plate (22), and the lifting chain components (24) act synchronously with the second plate (22) and have the function of synchronously lifting the chain when the chain is loosened.

2. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 1, characterized in that: A chain groove (25) is formed on the upper base surface of the first plate (21), and the chain groove (25) is used to hold the chain.

3. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 2, characterized in that: The chain groove (25) is divided into an open groove (251) and a connecting groove (252); There are two open grooves (251), and the two open grooves (251) are symmetrically formed on the first plate (21) for clamping two adjacent horizontal chain links on the chain; The connecting groove (252) penetrates through two adjacent open grooves (251) for clamping the vertical chain link connecting two adjacent horizontal chain links on the chain.

4. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 3, characterized in that: The connecting groove (252) is strip-shaped, and its opening depth is greater than the groove depth of the open groove (251); The depth of the connecting groove (252) is used to ensure that when the vertical chain link is clamped, the vertical chain link does not protrude above the upper base surface of the first plate (21).

5. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 4, characterized in that: When the second plate (22) is in the clamped state, the center of its bottom is attached to the intersection of the connecting groove (252) and the open groove (251).

6. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 5, characterized in that: A support rod is arranged on one side of the second plate (22), and the support rod is rotatably connected to the mounting plate (1) through a rotating seat; The second plate (22) makes a circular motion with the rotating seat as the fulcrum to realize the conversion between the clamped / relaxed states.

7. The chain clamping structure for the front end of the hydraulic support shifting device according to claim 6, wherein: The driving mechanism (23) includes a telescopic member (231); Both ends of the telescopic member (231) are respectively connected to the mounting plate (1) and the second plate (22) through rotating members (232), and the second plate (22) is driven to rotate with the rotating seat as the fulcrum by the extension / retraction of the telescopic member (231).

8. The chain clamping structure for the front end of the hydraulic support shifting device according to claim 7, characterized in that: The open groove (251) has a groove bottom (2511), a first groove side (2512), a second groove side (2513), and a third groove side (2514).

9. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 8, characterized in that: The first groove side (2512) and the second groove side (2513) are vertically arranged and form a 90° angle with the groove bottom (2511); The third groove side (2514) is obliquely arranged and forms a 120° angle with the groove bottom (2511).

10. The chain clamping structure for the front end of the hydraulic support displacement device according to claim 6, wherein: The lifting chain components (24) are symmetrically arranged on both sides of the support rod and act synchronously with the second plate (22), and they have a bending section and a lifting section; In the clamped state, the lifting section is located below the chain; In the relaxed state, the bending section rotates upward with the second plate (22) to drive the lifting section to lift the chain stuck in the chain groove (25).

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