Limiting plate for stopping rotation of vertical column piston rod in hydraulic support assembly

Abstract

A limiting plate for stand column piston rod rotation stopping in hydraulic support assembling comprises a limiting plate body, limiting blocks and rotation stopping shafts are arranged at the positions, corresponding to a plurality of stand column piston rods, of the lower side face of the limiting plate body respectively, and a mounting groove allowing the top of the corresponding stand column piston rod to penetrate into and rotate is formed in the lower side face of any limiting block. Placing grooves are formed in the positions, corresponding to the pin holes in the stand column piston rod, of the limiting block and communicate with the mounting groove, and the rotation stopping shaft penetrates through the mounting groove and then is mounted in the placing grooves in a matched mode to prevent the pin holes from rotating when the stand column piston rod stretches out. According to the utility model, the pin hole on the piston rod of the stand column is always aligned with the pin hole on the mounting surface of the top beam, so that a pin shaft is conveniently inserted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical equipment field of hydraulic support assembly, and specifically relates to a limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly. BACKGROUND

[0002] In the prior art, the installation of the top beam and the base is the key and main process of the assembly of the hydraulic support, the hydraulic support assembly is usually that the front and rear four stand columns and the front and rear four connecting rods are assembled on the base, the top beam is hoisted above the base by a gantry crane, the stand columns and the connecting rods are adjusted to the correct positions by personnel, the hoisted top beam is longitudinally flipped and placed on the base, then the piston rods of the stand columns are extended to the assembly height of the top beam, and the assembly of the stand columns, the connecting rods and the top beam is completed by the pin shaft. SUMMARY

[0003] The utility model aims at providing a limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly, which can always align the pin hole on the piston rod of the stand column with the pin hole on the mounting surface of the top beam for facilitating insertion of the pin shaft.

[0004] In order to solve the above technical problems, the utility model adopts the specific scheme of a limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly, which comprises a limiting plate body, a limiting block and a rotation-preventing shaft are arranged on the lower side of the limiting plate body at positions corresponding to the piston rods of the stand columns, an installation groove is arranged on the lower side of any limiting block for allowing the top part of the corresponding piston rod of the stand column to pass through and rotate, a placing groove is arranged on the limiting block at a position corresponding to the pin hole on the piston rod of the stand column, the placing groove is communicated with the installation groove, and the rotation-preventing shaft is inserted through the installation groove and fitted in the placing groove to prevent the pin hole from rotating when the piston rod of the stand column is extended.

[0005] As another optimization scheme of the above-mentioned limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly, the number of the limiting blocks is four corresponding to the number of the piston rods of the stand columns.

[0006] As another optimization scheme of the above-mentioned limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly, the four limiting blocks are arranged at the positions of the four corners of the limiting plate body.

[0007] As another optimization scheme of the above-mentioned limiting plate for preventing rotation of a piston rod of a stand column in hydraulic support assembly, the limiting block is a square, and the length of the rotation-preventing shaft is greater than the length of any side of the limiting block.

[0008] As another optimization scheme of the limiting plate for stopping rotation of the piston rod of the upright column in the assembly of the hydraulic support, the shape of the installation groove is circular, which is adapted to the top end of the circular arc of the piston rod of the upright column.

[0009] As another optimization scheme of the limiting plate for stopping rotation of the piston rod of the upright column in the assembly of the hydraulic support, the placement groove is an open groove, and a vertical plate is arranged on the limiting block at the position of the opening of the placement groove, and a through hole is formed in each vertical plate, and a anti-extraction bolt is arranged in the through holes of the two vertical plates to prevent the stop rotation shaft from being extracted.

[0010] As another optimization scheme of the limiting plate for stopping rotation of the piston rod of the upright column in the assembly of the hydraulic support, the placement groove and the vertical plate on the limiting block are integrally formed.

[0011] As another optimization scheme of the limiting plate for stopping rotation of the piston rod of the upright column in the assembly of the hydraulic support, the shape of the bottom of the placement groove is arc-shaped, which is matched with the outer periphery of the circular arc of the stop rotation shaft.

[0012] Compared with the prior art, the hydraulic support has the following beneficial effects:

[0013] In the utility model, the top of the plurality of piston rods of the upright column can be inserted into the installation groove on the limiting block in the corresponding position, and the plurality of piston rods of the upright column are connected through the limiting plate body. The limiting block is provided with a slot for communicating with the pin hole on the piston rod of the upright column, a stop rotation shaft is inserted into the pin hole through the slot, and the arrangement of the stop rotation shaft can prevent the piston rod from rotating during the elongation process, so that the condition that the pin hole on the piston rod is not aligned with the pin hole on the top beam due to the rotation of the piston rod and affects the normal assembly of the base and the top beam is avoided. The limiting plate can always align the pin hole on the piston rod of the upright column with the pin hole on the mounting surface of the top beam, and the pin shaft is convenient to insert. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a side view structure schematic diagram of the utility model;

[0015] Figure 2 It is a bottom view structure schematic diagram of the utility model;

[0016] Figure 3 It is a structure schematic diagram of the limiting plate of the utility model installed on the piston rod of the upright column;

[0017] Figure 4 It is Figure 3 It is an enlarged structure schematic diagram of part A.

[0018] The drawings show that: 1, limiting plate body, 2, limiting block, 201, placement groove, 202, vertical plate, 203, through hole, 204, installation groove, 3, stop rotation shaft, 4, piston rod of upright column, 401, pin hole. DETAILED DESCRIPTION

[0019] As Figures 1-4 shown, a hydraulic support assembly center column piston rod rotation limiting plate, including a limiting plate body 1, a plurality of limiting blocks 2 and a plurality of rotation stopping shafts 3, the number of limiting blocks 2 is four corresponding to four columns, four limiting blocks 2 are fixed at four corner positions of the limiting plate body 1, the lower side of the limiting block 2 is provided with a mounting groove 204 in the middle, the shape of the mounting groove 204 is a circle which is adapted to the round top of the column piston rod 4, the top of the column piston rod 4 penetrates into the mounting groove 204 and can rotate in the mounting groove 204.

[0020] The thickness of the limiting block 2 is thicker than that of the limiting plate body 1, the upper side of the limiting block 2 is fixed to the lower side of the limiting plate body 1, the lower side of the limiting block 2 is provided with a placing groove 201 corresponding to the position of the pin hole 401 on the column piston rod 4, the placing groove 201 is communicated with the mounting groove 204, the number of rotation stopping shafts 3 is four corresponding to four columns, one limiting block 2 is matched with one rotation stopping shaft 3, the length of the rotation stopping shaft 3 is longer than the length of any one side of the limiting block 2, so as to facilitate the subsequent column piston rod 4 to pull out and take off the rotation stopping shaft 3 from the pin hole 401 after the column piston rod 4 is stretched out.

[0021] When the column piston rod 4 penetrates into the mounting groove 204, in order to prevent the pin hole 401 on the column piston rod 4 from rotating with the stretching of the piston rod and appearing misaligned with the pin hole 401 on the top beam mounting surface, the rotation stopping shaft 3 can be penetrated into the pin hole 401 on the column piston rod 4 to prevent it from rotating when the column piston rod 4 is stretched out, after the rotation stopping shaft 3 penetrates through the pin hole 401 on the column piston rod 4, the ends thereof are respectively located in the placing groove 201 on the corresponding side, the shape of the groove bottom of the placing groove 201 is an arc corresponding to the arc surface of the rotation stopping shaft 3.

[0022] Further, in order to prevent the rotation stopping shaft 3 from coming out of the pin hole 401 with the stretching of the column piston rod 4, two vertical plates 202 are respectively arranged on the side of the placing groove 201 on the lower side of the limiting block 2, the vertical plate 202 is an integral structure with the limiting block 2. The vertical plate 202 is provided with a through hole 203, a anti-loosening bolt (not shown in the figure) is matched and penetrated into the two through holes 203 on the two vertical plates 202, after the rotation stopping shaft 3 penetrates through the pin hole 401 on the column piston rod 4, the anti-loosening bolt is penetrated into the through hole 203, which can prevent the rotation stopping shaft 3 from coming out of the mounting groove 204 during the stretching of the column piston rod 4.

[0023] When the column piston rod 4 needs to be extended to align the pin hole 401 on the piston rod with the pin hole on the roof beam mounting surface, first, install the limiting plate body 1 before the column piston rod 4 is extended, then the four column piston rods 4 are inserted into the installation slot 204 on the corresponding position of the limiting block 2, the placing groove 201 on the limiting block 2 is aligned with the pin hole 401 on the column piston rod 4, secondly, the rotation stopping shaft 3 is sequentially inserted into the pin hole 401 on the column piston rod 4, then the anti-loosening bolt is inserted into the through hole 203 on the vertical plate 202. Then, the column piston rod 4 is extended to the position close to the roof beam mounting surface, the anti-loosening bolt, the rotation stopping shaft 3 are sequentially taken out, and the limiting plate body 1 is removed.

Claims

1. A limit plate for preventing the piston rod of a column in a hydraulic support assembly, characterized by: The invention comprises a limit plate body (1), wherein the lower side surface of the limit plate body (1) is provided with limit blocks (2) and anti-rotation shafts (3) at positions corresponding to a plurality of column piston rods (4), and the lower side surface of any limit block (2) is provided with a mounting groove (204) for the top of the corresponding column piston rod (4) to penetrate and rotate, and the position of the limit block (2) corresponding to the pin hole (401) on the column piston rod (4) is provided with a placement groove (201), the placement groove (201) is communicated with the installation groove (204), and the anti-rotation shaft (3) passes through the installation groove (204) and is installed in the placement groove (201) to prevent the pin hole (401) from rotating when the column piston rod (4) is extended.

2. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 1, characterized in that: The number of the limiting blocks (2) is four, corresponding to the number of the column piston rods (4).

3. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 2, characterized in that: The four limiting blocks (2) are respectively arranged at the four corners of the limiting plate body (1).

4. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 1, characterized in that: The limiting block (2) is a square, and the length of the anti-rotation shaft (3) is greater than the length of any side of the limiting block (2).

5. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 1, characterized in that: The shape of the mounting groove (204) is circular and matches the arc-shaped top end of the column piston rod (4).

6. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 1, characterized in that: The placement slot (201) is an open slot, and a vertical plate (202) is respectively provided on the limiting block (2) at the position of the opening of the placement slot (201), and a through hole (203) is provided on each vertical plate (202). Anti-slip bolts for preventing the stop shaft (3) from slipping out are inserted into the through holes (203) of the two vertical plates (202).

7. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 6, characterized in that: The placement groove (201) and the vertical plate (202) on the limiting block (2) are integrally formed.

8. The limit plate for preventing the piston rod of a column from rotating during assembly of a hydraulic support according to claim 1, characterized in that: The shape of the bottom of the placement groove (201) is an arc that fits the outer periphery of the arc of the anti-rotation shaft (3).

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