Height adjusting mechanism

Abstract

The utility model provides a height adjusting mechanism which comprises a lower supporting plate, a shaft seat, a rotating shaft, a connecting seat and an upper supporting plate. Shaft seats are arranged on the lower supporting plate at intervals along the Y axis, a rotating shaft is arranged between the shaft seats, a connecting seat is arranged on the rotating shaft, and an upper supporting plate is arranged on the connecting seat; the lower supporting plate can be arranged between the base and the front connecting rod to block up the shield beam. The lower supporting plate, the shaft seat, the rotating shaft, the connecting seat and the upper supporting plate are arranged between the base and the front connecting rod, the rotating shaft can drive the connecting seat and the upper supporting plate to rotate, and the requirement for different padding heights of the shield beam can be met. After the mode that the height adjusting mechanism is placed between the front connecting rod and the base is changed, an assembling worker only needs to stand on the ground and place the height adjusting mechanism into the placing position between the front connecting rod and the base, the shield beam can be heightened, and compared with a traditional mode, the operation height is reduced.

Description

Technical Field

[0001] The utility model relates to the field of coal mine electromechanical technology, in particular to a height adjustment mechanism. Background Art

[0002] The hydraulic support includes a base, a front connecting rod, a rear connecting rod, a shielding beam, a top beam and a column. The left side of the base is hinged with the rear connecting rod and the front connecting rod from bottom to top respectively. The free ends of the rear connecting rod and the front connecting rod are hinged to the left side of the shielding beam from left to right in sequence. The top beam is hinged to the right side of the shielding beam, and a column is fixed between the top beam and the base. The hydraulic support is a structure used to control the mine pressure of the coal mining working face. The hydraulic support needs to be dismantled, repaired and assembled during maintenance. When assembling the top beam, since the height of the shielding beam cannot reach the height of the column in the normal state, the shielding beam needs to be raised before assembling the top beam to facilitate the installation of the hinge axis between the top beam and the shielding beam.

[0003] The traditional way to raise the shield beam is to insert a wedge between the shield beam and the front connecting rod. When placing the wedge, first use a crane to lift the shield beam to a certain height, then manually place the wedge between the shield beam and the front connecting rod, and then control the crane to lower the shield beam to complete the raising of the shield beam.

[0004] The traditional method of raising the shield beam has the following disadvantages:

[0005] 1. After the shield beam is lifted, the front connecting rod is at a high height from the ground. The assemblers cannot stand on the ground to place the wedges, but need to stand on the base to place the wedges, which makes the operation more difficult.

[0006] 2. When placing the wedges, the shield beam is in a suspended state. When the assembler places the wedges, his body will enter the angle between the shield beam and the front connecting rod, which poses certain safety risks during the operation;

[0007] 3. The wedges used are made of wood and have low strength. They will be damaged after a period of use and cannot be used any longer, which is a great waste of resources.

[0008] 4. The different heights required for raising the guard beam are completely adjusted by the assemblers by adjusting the depth of the wedges, which requires a high level of assembly proficiency on the part of the assemblers. Utility Model Content

[0009] The technical problem to be solved by the utility model is how to automatically adjust the height of the shielding beam.

[0010] The utility model solves the above technical problems through the following technical means:

[0011] A height adjustment mechanism comprises a lower support plate (1), an axle seat (2), a rotating shaft (5), a connecting seat (7), and an upper support plate (8); the lower support plate (1) is provided with axle seats (2) at intervals along the Y axis, a rotating shaft (5) is provided between the axle seats (2), a connecting seat (7) is provided on the rotating shaft (5), and an upper support plate (8) is provided on the connecting seat (7); the lower support plate (1) can be provided between a base and a front connecting rod to raise a shielding beam.

[0012] Beneficial effect: By placing the lower support plate and the axle seat, rotating shaft, connecting seat, and upper support plate thereon between the base and the front connecting rod, the rotating shaft can drive the connecting seat and the upper support plate to rotate, thereby being able to adapt to the different elevation requirements of the protective beam. In addition, after the present application is changed to a method of placing a height adjusting mechanism between the front connecting rod and the base, the assembler only needs to stand on the ground and place the height adjusting mechanism into the placement position between the front connecting rod and the base to complete the elevation of the protective beam, which reduces the working height compared to the traditional method. At the same time, when placing the height adjusting mechanism, the assembler does not need to enter the lifted protective beam, which greatly reduces the safety risk during operation.

[0013] Furthermore, it also includes a positioning block (10), wherein the positioning block (10) is fixed on the base, the positioning block (10) is arranged to be in conflict with the lower support plate (1), and the upper support plate (8) is arranged to be in conflict with the front connecting rod.

[0014] Beneficial effect: through the setting of the positioning block, it is only necessary to fix the positioning block on the base, and the lower support plate does not need to be fixed on the base, and can be used at any time; the position of the positioning block can be changed according to the height of the shield beam that needs to be raised.

[0015] Furthermore, a first limit seat (3) and a second limit seat (4) are respectively fixed on both sides of the shaft seat (2), and the first limit seat (3) and the second limit seat (4) are arranged in a mirror image.

[0016] Beneficial effect: The first limiting seat and the second limiting seat are provided to support the connection seat and the rotating shaft for limiting.

[0017] Furthermore, the second limit seat (4) comprises a first limit block, a second limit block (42), and a connecting plate (43); the first limit block is fixed on the front shaft seat (2); the second limit block (42) is fixed on the rear shaft seat (2); and a connecting plate (43) is fixed between the first limit block and the second limit block (42).

[0018] Furthermore, the first limiting block and the second limiting block (42) are both arranged in the shape of right triangles.

[0019] Furthermore, a handle (9) is fixed on the second limiting seat (4).

[0020] Beneficial effect: By setting the handle, it is convenient to take the mechanism of the present application and place it between the base and the front connecting rod.

[0021] Furthermore, the rotating shaft (5) comprises a shaft body (51) and a shaft sleeve, wherein the shaft sleeve is sleeved on the shaft body (51) and can rotate around the shaft body (51), and the front and rear ends of the shaft body (51) are respectively mounted in mounting holes of two shaft seats (2), and a connecting seat (7) is fixed on the shaft sleeve.

[0022] Furthermore, shaft blocking plates (6) are respectively sleeved on the free ends of the front and rear ends of the shaft body (51).

[0023] Beneficial effect: The shaft body is prevented from falling out by setting the shaft blocking plate.

[0024] Furthermore, the shaft blocking plate (6) is an aluminum gasket.

[0025] Furthermore, the lower support plate (1), the shaft seat (2), the rotating shaft (5), the connecting seat (7), and the upper support plate (8) are all made of steel.

[0026] Beneficial effect: The steel setting makes the mechanism high in strength and long in service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a working schematic diagram of the height adjustment mechanism of the first embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Embodiment 1

[0030] like Figure 1 As shown, this embodiment provides a height adjustment mechanism, including a lower support plate 1, an axle seat 2, a first limit seat 3, a second limit seat 4, a rotating shaft 5, an axle blocking plate 6, a connecting seat 7, an upper support plate 8, a handle 9, and a positioning block 10.

[0031] like Figure 1As shown, an axle seat 2 is fixed on the front and rear sides of the top wall of the lower support plate 1, and a first limit seat 3 and a second limit seat 4 are fixed on both sides of the axle seat 2, respectively. The first limit seat 3 and the second limit seat 4 are mirror-imaged, and the second limit seat 4 includes a first limit block (not shown), a second limit block 42, and a connecting plate 43. The first limit block (not shown) is fixed on the axle seat 2 on the front side, and the second limit block 42 is fixed on the axle seat 2 on the rear side. The first limit block and the second limit block 42 are used to support the connecting seat 7 and the rotating shaft 5. A connecting plate 43 is fixed between the first limit block and the second limit block 42. The first limit block and the second limit block 42 are both right-angled triangle arrangements, and a handle 9 is fixed on the connecting plate 43 of the second limit seat 4.

[0032] like Figure 1 As shown, mounting holes are opened on the two shaft seats 2 respectively, and a rotating shaft 5 is fixed between the two shaft seats 2. The rotating shaft 5 includes a shaft body 51 and a shaft sleeve (not shown in the figure). The shaft sleeve is sleeved on the shaft body 51, and the shaft sleeve can rotate around the shaft body 51. The front and rear ends of the shaft body 51 are respectively installed in the mounting holes of the two shaft seats 2, and the free ends of the front and rear ends of the shaft body 51 are respectively sleeved with shaft blocking plates 6 to prevent the shaft body 51 from falling out. A connecting seat 7 is fixed on the shaft sleeve, and the connecting seat 7 can rotate around the shaft body 51 with the shaft sleeve, and an upper support plate 8 is fixed on the connecting seat 7; when the connecting seat 7 rotates and touches the top wall of the first limit seat 3, the angle between the upper support plate 8 and the lower support plate 1 is the maximum value, and when the connecting seat 7 rotates and touches the top wall of the second limit seat 4, the angle between the upper support plate 8 and the lower support plate 1 is the minimum value.

[0033] like Figure 1 As shown, the positioning block 10 is arranged on one side of the lower support plate 1 close to the handle 9. The positioning block 10 is arranged in conflict with the lower support plate 1 and is used for positioning and fixing the lower support plate 1. The positioning block 10 and the connecting seat 7 can be rotatably arranged to meet the requirements of different heights of the shielding beam. The angle between the front connecting rod and the base is different for different heights of the shielding beam. When the angle becomes larger, it is only necessary to move the welding position of the positioning block 10 inward, and then place the height adjustment mechanism with the rotating shaft 5. When the front connecting rod is pressed down to the upper support plate 8, the angle of the height adjustment mechanism is fixed.

[0034] like Figure 1As shown, the lower support plate 1, the shaft seat 2, the first limit seat 3, the second limit seat 4, the rotating shaft 5, the connecting seat 7, the upper support plate 8, the handle 9, and the positioning block 10 are all made of steel with high strength and long service life; the lower support plate 1 is made of steel plate with a thickness of 15mm; the shaft seat 2 is made of steel plate with a thickness of 15mm; the first limit block and the second limit block 42 are both made of steel plate with a thickness of 30mm; the rotating shaft 5 is made of round steel; the shaft blocking plate 6 is made of aluminum gasket; the connecting seat 7 is composed of two 30mm thick steel plates; the upper support plate 8 is made of steel plate with a thickness of 15mm; the handle 9 is made of 10mm diameter smooth round steel bar; the positioning block 10 is made of square steel or round steel.

[0035] When in use, firstly weld the positioning block 10 at the corresponding position on the base according to the height that the shielding beam needs to be raised, lift the shielding beam by the crane, increase the angle between the front connecting rod and the base, then the assembler grasps the handle 9 to put the lower support plate 1 and the components thereon into the angle between the front connecting rod and the base, so that the lower support plate 1 is against the positioning block 10, then control the crane to lower the shielding beam, so that the front connecting rod is lowered and pressed against the upper supporting plate 8, fix the lifting angle of the upper connecting rod, and finally complete the raising of the shielding beam; the front connecting rod is pressed on the upper supporting plate 8, and the downward pressure of the front connecting rod is transmitted to the lower supporting plate 8 through the rotating shaft 5. Plate 1 is decomposed into two forces, downward and backward. The downward force acts on the base, and the backward force acts on the positioning block 10, so that the mechanism of the present application is fixed between the front connecting rod and the base, thereby realizing the raising of the shielding beam. After the present application is changed to a method of placing the height-adjusting mechanism between the front connecting rod and the base, the assembler only needs to stand on the ground and place the height-adjusting mechanism into the placement position between the front connecting rod and the base to complete the raising of the shielding beam, which reduces the working height compared with the traditional method. At the same time, when placing the height-adjusting mechanism, the assembler does not need to enter the lifted shielding beam, which greatly reduces the safety risk during operation.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A height adjustment mechanism, characterized in that: It comprises a lower support plate (1), an axle seat (2), a rotating shaft (5), a connecting seat (7), and an upper support plate (8); The lower support plate (1) is provided with shaft seats (2) at intervals along the Y axis, a rotating shaft (5) is provided between the shaft seats (2), a connecting seat (7) is provided on the rotating shaft (5), and an upper support plate (8) is provided on the connecting seat (7); the lower support plate (1) can be provided between the base and the front connecting rod to raise the shielding beam.

2. A height adjustment mechanism according to claim 1, characterized in that: It also comprises a positioning block (10), wherein the positioning block (10) is fixed on the base, the positioning block (10) is arranged in abutment with the lower support plate (1), and the upper support plate (8) is arranged in abutment with the front connecting rod.

3. A height adjustment mechanism according to claim 1, characterized in that: A first limiting seat (3) and a second limiting seat (4) are respectively fixed on both sides of the shaft seat (2); the first limiting seat (3) and the second limiting seat (4) are arranged in a mirror image.

4. A height adjustment mechanism according to claim 3, characterized in that: The second limit seat (4) comprises a first limit block, a second limit block (42) and a connecting plate (43); the first limit block is fixed on the front shaft seat (2); the second limit block (42) is fixed on the rear shaft seat (2); and a connecting plate (43) is fixed between the first limit block and the second limit block (42).

5. A height adjustment mechanism according to claim 4, characterized in that: The first limiting block and the second limiting block (42) are both arranged in the shape of right triangles.

6. A height adjustment mechanism according to claim 3, characterized in that: A handle (9) is fixed on the second limiting seat (4).

7. A height adjustment mechanism according to claim 1, characterized in that: The rotating shaft (5) comprises a shaft body (51) and a shaft sleeve, wherein the shaft sleeve is sleeved on the shaft body (51) and can rotate around the shaft body (51), and the front and rear ends of the shaft body (51) are respectively mounted in mounting holes of two shaft seats (2), and a connecting seat (7) is fixed on the shaft sleeve.

8. A height adjustment mechanism according to claim 7, characterized in that: Axle blocking plates (6) are respectively sleeved on the free ends of the front and rear ends of the shaft body (51).

9. A height adjustment mechanism according to claim 8, characterized in that: The shaft blocking plate (6) is an aluminum gasket.

10. The height adjustment mechanism according to claim 1, characterized in that: The lower support plate (1), the shaft seat (2), the rotating shaft (5), the connecting seat (7) and the upper support plate (8) are all made of steel.

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