Support structure for coal mine

Abstract

The utility model provides a coal mine support structure which comprises a base, two hydraulic cylinders are installed on the upper end face of the base, and supporting blocks are installed at the upper ends of telescopic rods of the two hydraulic cylinders. Two reinforcing supporting assemblies are arranged between the upper end face of the base and the bottom end face of the supporting block, and a one-way limiting part is arranged on the front side of each reinforcing supporting assembly. Through cooperation of the two sets of reinforcing supporting assemblies and the two sets of one-way limiting parts, the square sliding columns can be limited through the multiple trapezoidal inserting blocks even if oil leakage occurs in the using process, the stability and reliability of the support are remarkably improved, and potential safety hazards of a coal mine are reduced.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic support technology for coal mines, and in particular to a support structure for coal mines. Background Technology

[0002] In coal mining operations, safety and efficiency are always the core concerns. With the continuous development of coal mining technology and the increasing level of mechanization, hydraulic supports for coal mines, as key equipment to ensure the safety and stable production of the coal mining face, directly affect the efficiency and safety of coal mining. Since hydraulic supports mainly rely on hydraulic cylinders as their core support structure, these cylinders are prone to problems such as aging of seals and wear of the cylinder barrel under long-term high-load working conditions, leading to hydraulic oil leakage. This not only affects the overall stability and reliability of the support but also poses potential hazards to coal mine safety. Utility Model Content

[0003] This disclosure relates to a support structure for coal mines. Through the cooperation of two sets of reinforcing support components and two sets of one-way limiting parts, even if two hydraulic cylinders leak oil during use, multiple trapezoidal blocks can limit the two square sliding columns, thereby improving the overall stability and reliability of the support and effectively avoiding potential hazards to coal mine safety production.

[0004] In a first aspect, this disclosure provides a support structure for coal mines, specifically comprising: a base, wherein two hydraulic cylinders are mounted on the upper surface of the base, and support blocks are mounted on the upper ends of the telescopic rods of the two hydraulic cylinders; two sets of reinforcing support components are provided between the upper surface of the base and the bottom surface of the support blocks, and each reinforcing support component has a set of one-way limiting parts on its front side; each reinforcing support component includes a square slide cylinder, a square slide column, and a rectangular slot, wherein the square slide cylinder is fixedly connected to the upper surface of the base, and a square slide column is slidably connected inside the square slide cylinder, with the upper end of the square slide column fixedly connected to the bottom surface of the support block. The front end face of the square sliding cylinder has rectangular slots evenly distributed. The one-way limiting part includes a rectangular shell, a rectangular sliding block, a trapezoidal insert, and a spring guide rod. There are three rectangular shells, which are installed on the front end face of the square sliding cylinder. A rectangular sliding block is slidably connected inside each rectangular shell. A trapezoidal insert is fixedly connected to the rear end face of each rectangular sliding block, penetrating the rear side wall of the rectangular shell. A spring guide rod is provided on the front end face of each rectangular sliding block, penetrating the front side wall of the rectangular shell. A spring is sleeved on the outside of each spring guide rod inside the rectangular shell.

[0005] In at least some embodiments, two U-shaped reinforcing plates are fixedly connected to the upper surface of the base in a symmetrical manner, and the two U-shaped reinforcing plates are respectively installed outside the two hydraulic cylinders.

[0006] In at least some embodiments, when the unidirectional limiting part is in the unidirectional limiting state, the rear end of the trapezoidal plug is inserted into the rectangular slot.

[0007] In at least some embodiments, a synchronous pull-out assembly is also included. The synchronous pull-out assembly includes a lever, a rotating bracket, a pull rope, a first pulley, a second pulley, a synchronous pedal, and a drive rod. There are two levers, each lever is rotatably connected to a rotating bracket via a pivot, and the two rotating brackets are fixedly installed on the upper surface of the base. A pull rope is fixedly connected to the rear side of the bottom surface of each rotating bracket, and two first pulleys and one second pulley are slidably connected to the outside of each pull rope. The first pulleys are installed on the upper surface of the base, and the second pulleys are installed on the outside of the rectangular housing. A drive rod is fixedly connected to the upper end of each pull rope, and the two drive rods are respectively fixedly connected to six rectangular sliding blocks. A synchronous pedal is fixedly connected to the front side of the upper end of the two levers.

[0008] In at least some embodiments, when the synchronous pedal is in the downward pressing state, the two drive rods move forward simultaneously with six rectangular sliding blocks and six trapezoidal inserts, at which time the trapezoidal inserts are pulled out from inside the rectangular slots.

[0009] This utility model provides a support structure for coal mines, which has the following advantages:

[0010] 1. By strengthening the cooperation between the support components and the one-way limiting part, when the square sliding column moves upward to the appropriate position, the rectangular sliding block will be pushed back into the corresponding rectangular slot by the spring force outside the spring guide rod along with the trapezoidal plug. Even if oil leakage occurs, the two square sliding columns can be limited by the six trapezoidal plugs, thereby improving the overall stability and reliability of the bracket.

[0011] 2. By setting up a synchronous pull-out component, pressing the pedal downwards synchronously will pull the trapezoidal insert out of the rectangular slot, thus improving the convenience of the pull-out operation and making it more effortless. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0013] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0014] In the attached diagram:

[0015] Figure 1 A structural schematic diagram of the overall structure of this application is shown;

[0016] Figure 2 This diagram illustrates the structure of this application in its disassembled state.

[0017] Figure 3 This paper shows a partial cross-sectional structural schematic diagram of the square sliding cylinder and square sliding column of this application;

[0018] Figure 4 A schematic diagram of the rectangular sliding block, trapezoidal insert block, and synchronous pull-out assembly of this application is shown.

[0019] List of reference numerals

[0020] 1. Base; 101. Hydraulic cylinder; 102. Support block; 103. U-shaped reinforcing plate;

[0021] 2. Reinforced support components; 201. Square slide cylinder; 202. Square slide column; 203. Rectangular slot;

[0022] 3. One-way limiting part; 301. Rectangular shell; 302. Rectangular sliding block; 303. Trapezoidal insert; 304. Spring guide rod;

[0023] 4. Synchronous pull-out assembly; 401. Lever; 402. Rotating bracket; 403. Pull rope; 404. First pulley; 405. Second pulley; 406. Synchronous pedal; 407. Drive rod. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0025] Example 1: Please refer to Figures 1 to 4 :

[0026] This utility model proposes a support structure for coal mines, comprising: a base 1, with two hydraulic cylinders 101 mounted on the upper surface of the base 1, and support blocks 102 mounted on the upper ends of the telescopic rods of the two hydraulic cylinders 101; two sets of reinforcing support components 2 are provided between the upper surface of the base 1 and the bottom surface of the support blocks 102, and each reinforcing support component 2 has a set of one-way limiting parts 3 on its front side; the reinforcing support components 2 include a square slide cylinder 201, a square slide column 202, and a rectangular slot 203, the square slide cylinder 201 is fixedly connected to the upper surface of the base 1, the square slide column 202 is slidably connected inside the square slide cylinder 201, the upper end of the square slide column 202 is fixedly connected to the bottom surface of the support block 102, and the front end of the square slide column 202 has rectangular slots 203 evenly distributed; the one-way limiting parts 3 include a rectangular shell 301, a rectangular slide block 302, a trapezoidal insert 303, and a spring guide rod 304, the number of rectangular shells 301 is three, and the three rectangular shells 301 are installed on the square slide cylinder 201. On the front end, each rectangular housing 301 has a rectangular sliding block 302 slidably connected inside. Each rectangular sliding block 302 has a trapezoidal insert 303 fixedly connected to its rear end, penetrating the rear sidewall of the rectangular housing 301. Each rectangular sliding block 302 has a spring guide rod 304 penetrating the front sidewall of the rectangular housing 301 on its front end. Each spring guide rod 304 is fitted with a spring inside the rectangular housing 301. Through the cooperation of two sets of reinforcing support components 2 and two sets of one-way limiting parts 3, when the square sliding column 202 moves upward to the appropriate position, the rectangular sliding block 302 will be pushed back into the corresponding rectangular slot 203 by the spring force outside the spring guide rod 304, along with the trapezoidal insert 303. Even if the two hydraulic cylinders 101 leak oil during use, the six trapezoidal inserts 303 can limit the two square sliding columns 202, thereby greatly improving the overall stability and reliability of the bracket.

[0027] Two U-shaped reinforcing plates 103 are fixedly connected to the upper surface of the base 1 in a symmetrical manner. The two U-shaped reinforcing plates 103 are respectively installed on the outside of the two hydraulic cylinders 101. The U-shaped reinforcing plates 103 make the hydraulic cylinders 101 more stable when operating on the upper surface of the base 1.

[0028] When the one-way limiting part 3 is in the one-way limiting state, the rear end of the trapezoidal insert 303 is inserted into the rectangular slot 203, so that the support block 102 cannot descend automatically at this time. Therefore, even if both hydraulic cylinders 101 leak oil, the two square sliding columns 202 can be limited by the six trapezoidal inserts 303.

[0029] Example 2, based on Example 1, such as Figure 1 and Figure 4As shown, it also includes a synchronous pull-out assembly 4, which includes a lever 401, a rotating bracket 402, a pull rope 403, a first pulley 404, a second pulley 405, a synchronous pedal 406, and a drive rod 407. There are two levers 401, each lever 401 is rotatably connected to a rotating bracket 402 via a pivot, and the two rotating brackets 402 are fixedly mounted on the upper surface of the base 1. A pull rope 403 is fixedly connected to the rear side of the bottom surface of each rotating bracket 402, and each pull rope 403... Two first pulleys 404 and one second pulley 405 are slidably connected to the outside. The first pulleys 404 are installed on the upper surface of the base 1, and the second pulleys 405 are installed on the outside of the rectangular housing 301. Each pull rope 403 is fixedly connected to a driving rod 407 at its upper end. The two driving rods 407 are fixedly connected to the six rectangular sliding blocks 302 respectively. Synchronous pedals 406 are fixedly connected to the front side of the upper end of the two levers 401. The setting of the two levers 401 makes it easier to pull out the six trapezoidal blocks 303.

[0030] When the synchronous pedal 406 is in the downward pressing state, the two drive rods 407 move forward simultaneously with the six rectangular sliding blocks 302 and the six trapezoidal inserts 303. At this time, the trapezoidal inserts 303 are pulled out from the rectangular slots 203. With the setting of the synchronous pull-out component 4, the six trapezoidal inserts 303 can be pulled out from the six rectangular slots 203 by pressing the synchronous pedal 406 downward with the foot, thereby improving the convenience of pulling out the six trapezoidal inserts 303.

[0031] The working principle of this embodiment is as follows: When in use, the bracket is placed below the part to be supported in the mine, and then the telescopic rods of the two hydraulic cylinders 101 are controlled to extend and move, moving the support block 102 upward in a straight line, so that the upper end face of the support block 102 contacts the part to be supported in the mine, and then the part to be supported in the mine is supported.

[0032] As the support block 102 moves upward, it will slide the two square sliding pillars 202 upward. Under the action of the inclined surface at the bottom of the trapezoidal insert 303, it will not obstruct the upward movement of the square sliding pillars 202. When the square sliding pillars 202 move upward to the appropriate position, the rectangular sliding block 302 will be pushed back into the corresponding rectangular slot 203 by the spring force outside the spring guide rod 304. Even if oil leakage occurs, the two square sliding pillars 202 can be limited by multiple trapezoidal inserts 303, thereby improving the overall stability and reliability.

[0033] When the height of the support block 102 needs to be lowered, the operator can step on the synchronous pedal 406 downwards, causing the front ends of the two levers 401 to rotate downwards. Then, the rear ends of the two levers 401 move the lower ends of the two pull ropes 403 upwards, cooperating with the two second pulleys 405 and the first pulley 404. The upper ends of the two pull ropes 403 respectively move the two driving rods 407, the six rectangular sliding blocks 302 and the six trapezoidal inserts 303 forward, thereby pulling the six trapezoidal inserts 303 out of the six rectangular slots 203. Then, the telescopic rods of the two hydraulic cylinders 101 are controlled to retract downwards, lowering the height of the support block 102.

[0034] The following points should be noted in this article:

[0035] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in general design.

[0036] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0037] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A support structure for coal mines, comprising: A base (1) is provided with two hydraulic cylinders (101) mounted on its upper end face, and a support block (102) is mounted on the upper end of the telescopic rod of the two hydraulic cylinders (101); characterized in that two sets of reinforcing support components (2) are provided between the upper end face of the base (1) and the bottom end face of the support block (102), and a set of one-way limiting parts (3) is provided on the front side of each reinforcing support component (2); The reinforcing support component (2) includes a square slide cylinder (201), which is fixedly connected to the upper end face of the base (1). A square slide column (202) is slidably connected inside the square slide cylinder (201). The upper end of the square slide column (202) is fixedly connected to the bottom end face of the support block (102). The front end face of the square slide column (202) is provided with rectangular slots (203) in a uniform shape. The one-way limiting part (3) includes a rectangular shell (301), and there are three rectangular shells (301). The three rectangular shells (301) are installed on the front end face of the square slide cylinder (201). A rectangular sliding block (302) is slidably connected inside each rectangular shell (301). A trapezoidal insert (303) penetrating the rear side wall of the rectangular shell (301) is fixedly connected to the rear end face of each rectangular sliding block (302). A spring guide rod (304) penetrating the front side wall of the rectangular shell (301) is provided on the front end face of each rectangular sliding block (302). A spring is sleeved on the outside of each spring guide rod (304) inside the rectangular shell (301).

2. The support structure for coal mines according to claim 1, characterized in that: The upper surface of the base (1) is fixedly connected with two U-shaped reinforcing plates (103) in a symmetrical manner, and the two U-shaped reinforcing plates (103) are respectively installed on the outside of the two hydraulic cylinders (101).

3. The support structure for coal mines according to claim 1, characterized in that: When the one-way limiting part (3) is in the one-way limiting state, the rear end of the trapezoidal plug (303) is inserted into the rectangular slot (203).

4. A support structure for coal mines according to claim 1, characterized in that: It also includes a synchronous pull-out assembly (4), which includes two levers (401). Each lever (401) is rotatably connected to a rotating bracket (402) via a rotating shaft. The two rotating brackets (402) are fixedly installed on the upper surface of the base (1). A pull rope (403) is fixedly connected to the rear side of the bottom surface of each rotating bracket (402). Two first pulleys (404) and one second pulley (405) are slidably connected to the outside of each pull rope (403). The first pulleys (404) are installed on the upper surface of the base (1), and the second pulleys (405) are installed on the outside of the rectangular shell (301). A driving rod (407) is fixedly connected to the upper end of each pull rope (403). The two driving rods (407) are fixedly connected to six rectangular sliding blocks (302) respectively. A synchronous pedal (406) is fixedly connected to the front side of the upper end of the two levers (401).

5. A support structure for coal mines according to claim 4, characterized in that: When the synchronous pedal (406) is in the downward pressing state, the two drive rods (407) move forward simultaneously with the six rectangular sliding blocks (302) and the six trapezoidal inserts (303), at which time the trapezoidal inserts (303) are pulled out from the rectangular slots (203).

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