CN211073407U

CN211073407U - Hydraulic stretcher piston dismounting device

Info

Publication number: CN211073407U
Application number: CN201921468543.0U
Authority: CN
Inventors: 谭昌春; 丛长林; 唐豪瑜
Original assignee: Beijing Haitaisi Engineering Equipment Co ltd
Current assignee: Beijing Haitaisi Engineering Equipment Co ltd
Priority date: 2019-09-04
Filing date: 2019-09-04
Publication date: 2020-07-24
Anticipated expiration: 2029-09-04

Abstract

The utility model relates to a hydraulic stretcher piston dismounting device, including a horizontal pole, two bracing pieces, a tooth pole, and a plurality of draw the claw, two bracing pieces establish respectively the cover at the horizontal pole both ends, and with the bolt-up on the horizontal pole, the horizontal pole middle part is provided with outstanding platform, the tooth pole alternates in the connect hole that outstanding platform central authorities seted up, threaded connection has the adjustment nut between tooth pole head and the outstanding platform, the tooth pole has connector and the tight dish in top to bottom in proper order after passing the connecting hole, every pin joint that draws the claw equidistant is in the connector week, draw the claw by connecting portion, tight portion in top and block portion integrated into one piece, connecting portion tilt up and pin joint are on the connector, the tight portion in top incline and with the tight dish side contact in top, block portion stretches out outwards and is used for accepting the hydraulic stretcher piston. The utility model discloses can solve the problem that the hydraulic stretcher piston of equidimension not is difficult to the dismantlement, it also has the flexible operation, convenient to use's advantage.

Description

Hydraulic stretcher piston dismounting device

Technical Field

The utility model relates to the field of mechanical equipment, concretely relates to hydraulic stretcher piston dismounting device.

Background

The hydraulic bolt tensioner is called as a hydraulic tensioner for short and has the functions of fastening and dismounting bolts. The method can be widely applied to industries such as metallurgical mines, petrochemical industry, ship industry, electric power systems, rolling stocks, heavy machinery and the like. The bolt is stretched in the elastic deformation area by the aid of hydraulic power provided by the ultra-high pressure pump and the elastic amplitude allowed by materials, and the purpose of fastening or detaching the bolt is achieved. In addition, the device can be used as a device for applying axial force by hydraulic interference connection to perform jacking installation. Particularly in the working environment with serious pollution or limited space area, the hydraulic stretching device is difficult to replace by any other tool, and is ideal technological equipment for assembling large and medium-sized mechanical products and maintaining equipment. The construction work efficiency is greatly improved.

After the hydraulic stretcher is used repeatedly or for a long time, the sealing performance in the hydraulic stretcher is reduced, so that the piston of the hydraulic stretcher needs to be detached to replace the sealing, and then the hydraulic stretcher is used again. Sometimes, the piston of the hydraulic stretcher is very tight and cannot be disassembled; when the piston is disassembled, the cylinder body of the hydraulic stretcher is required to be used as a support to disassemble the piston, but the diameter of the cylinder body of the hydraulic stretcher is large or small, and the disassembling devices of different types are required to be replaced when the piston is disassembled; and the piston of the hydraulic stretcher is hollow inside, and the end surface of the piston is provided with an inward extending flange, so that the frequently used extractor needs to be detached by taking a tooth rod as a support, but the piston of the pressing stretcher is hollow inside, so that the extractor is difficult to detach the piston of the hydraulic stretcher.

Therefore, a device which can solve the problem that the pistons of the hydraulic stretchers with different sizes are difficult to disassemble, is flexible to operate and is convenient to use is needed to solve the problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a hydraulic stretcher piston dismounting device.

For solving the above-mentioned problem that exists among the prior art, the utility model provides a pair of hydraulic stretcher piston dismounting device, include:

the middle part of the cross rod is provided with a protruding platform, and the center of the protruding platform is provided with a through connecting through hole;

the first support rod and the second support rod are the same in length, a first through hole is formed in the side wall of the upper end of the first support rod, the first support rod is sleeved at the left end of the cross rod through the first through hole, a first threaded hole which is vertical to and penetrates through the first through hole is formed in the center of the top surface of the first support rod, and a first fixing bolt is connected in the first threaded hole in a threaded mode; a second through hole is formed in the side wall of the upper end of the second supporting rod, the second supporting rod is sleeved at the right end of the cross rod through the second through hole, a second threaded hole which is vertical to and penetrates through the second through hole is formed in the center of the upper top surface of the second supporting rod, and a second fixing bolt is connected to the second threaded hole in a threaded mode;

the tooth rod is inserted into a connecting through hole formed in the center of the protruding platform, a thick adjusting nut is connected between the head of the tooth rod and the protruding platform in a threaded mode, and the tooth rod is sequentially connected with a connecting body and a jacking disc in a threaded mode from top to bottom after penetrating through the connecting through hole;

and each pulling claw is pivoted on the periphery of the connecting body at equal intervals, each pulling claw is integrally formed by a connecting part, a jacking part and a clamping part, the connecting parts incline upwards and are pivoted on the connecting body, the jacking parts incline inwards and are in contact with the side surfaces of the jacking discs, and the clamping parts extend outwards to be used for bearing pistons of the hydraulic stretcher.

Further, the utility model relates to a hydraulic stretcher piston dismounting device, wherein, connector circumference is equidistant to be set up a plurality of a pair of bellyings, leaves the clearance between each pair of bellyings, draws the connecting portion of claw to place in the clearance to a cylindric lock will draw the claw pin joint on a pair of bellyings.

Further, the utility model relates to a hydraulic stretcher piston dismounting device, wherein, the cylindric lock is for having the internal screw thread cylindric lock.

Further, the utility model relates to a hydraulic pressure elongator piston dismounting device, wherein, the tight dish in top is inverted circular truncated cone shape, and the side of the tight dish in top cooperates with the tight portion in top of drawing the claw. .

Further, the utility model relates to a hydraulic pressure elongator piston dismounting device, wherein, first flange is seted up to first bracing piece lower extreme, and the second flange is seted up to second bracing piece lower extreme, and the distance of first flange and first bracing piece bottom surface is the same with the distance of second flange and second bracing piece bottom surface.

Further, the utility model relates to a hydraulic stretcher piston dismounting device, wherein, set up first pinhole on the horizontal pole left end side, set up the second pinhole on the horizontal pole right-hand member side, insert first split pin in the first pinhole, insert the second split pin in the second pinhole.

Further, the utility model relates to a hydraulic stretcher piston dismounting device, wherein, it specifically sets up to three to draw the claw.

The utility model relates to a hydraulic stretcher piston dismounting device compares with prior art, has following advantage: the utility model discloses a position on the horizontal pole can be adjusted to first bracing piece and second bracing piece, can adapt to the hydraulic stretching ware of equidimension not, need not carry the dismounting device that not equidimension hydraulic stretching ware corresponds, uses the utility model discloses only need during the piston of dismantling hydraulic stretching ware will draw the claw chucking on the flange of piston inside extension, then twist and move the adjustment thick nut, will dismantle the piston get off, flexible operation, convenient to use.

The following describes a hydraulic stretcher piston detaching device according to the present invention in further detail with reference to the embodiments shown in the drawings.

Drawings

Fig. 1 is a perspective view of a hydraulic stretcher piston dismounting device of the present invention;

fig. 2 is a front view of a hydraulic stretcher piston dismounting device of the present invention;

fig. 3 is a top view of a hydraulic stretcher piston detaching device according to the present invention;

fig. 4 is a cross-sectional view of a first support rod of a hydraulic tensioner piston disassembly apparatus of the present invention;

fig. 5 is a cross-sectional view of a second support rod in the hydraulic stretcher piston dismounting device of the present invention;

fig. 6 is a cross-sectional view of a cross bar in a hydraulic stretcher piston dismounting device of the present invention;

fig. 7 is a schematic view of the hydraulic stretcher piston detaching device of the present invention.

Wherein: 1, a cross bar; 11, projecting the platform; 111, connecting the through holes; 12, a first pin hole; 13, a second pin hole; 21, a first support bar; 211, a first feedthrough hole; 212, a first threaded hole; 213, a first flange; 22, a second support bar; 221, a second through hole; 222, a second threaded hole; 223, a second flange; 3, a tooth bar; 31, adjusting the thick nut; 32, a linker; 321, a convex part; 33, tightly pressing the disc; 4, pulling the claw; 41, a connecting part; 42, a tightening part; 43, an engaging portion; 5, a cylindrical pin; 6, a first fixing bolt; 7, a second fixing bolt; 8, a first cotter pin; 9, a second cotter pin, 100, a hydraulic stretcher cylinder; 101 hydraulic tensioner piston.

Detailed Description

Fig. 1 to 7 show a specific embodiment of a piston dismounting device for a hydraulic stretcher according to the present invention, which includes a cross bar 1, two support bars, a tooth bar 3 and a plurality of pulling claws 4; wherein, the middle part of the cross bar 1 is provided with a protruding platform 11, and the center of the protruding platform 11 is provided with a through connecting through hole 111; the two support rods are respectively a first support rod 21 and a second support rod 22, in order to enable the cross rod 1 to be positioned on a horizontal plane after being supported, the first support rod 21 and the second support rod 22 are identical in length, a first through hole 211 is formed in the side wall of the upper end of the first support rod 21, the first support rod 21 is sleeved at the left end of the cross rod 1 after passing through the first through hole 211, a first threaded hole 212 which is vertical to the center of the top surface of the first support rod 21 and penetrates through the first through hole 211 is formed in order to fix the first support rod 21, and the first support rod 21 is fixed on the cross rod 1 through a first fixing bolt 6; a second through hole 221 is formed in the side wall of the upper end of the second support rod 22, the second support rod 22 is sleeved at the right end of the cross rod 1 through the second through hole 221, a second threaded hole 222 which is vertical and penetrates through the second through hole 221 is formed in the center of the top surface of the second support rod 22 for fixing the second support rod 22, the second support rod 22 is fixed on the cross rod 1 through a second fixing bolt 7, the first support rod 21 and the second support rod 22 are symmetrically arranged in the same direction and are in contact with the upper end surface of the hydraulic stretcher cylinder body 100, and therefore the installation of the integral support is completed; then installing a tooth rod 3, wherein the tooth rod 3 is inserted into a connecting through hole 111 formed in the center of the protruding platform 11, an adjusting thick nut 31 is connected between the head of the tooth rod 3 and the protruding platform 11 in a threaded manner, the adjusting thick nut 31 is used for integrally lifting the tooth rod 3, and the tooth rod 3 is sequentially connected with a connecting body 32 and a tightening disc 33 in a threaded manner from top to bottom after penetrating through the connecting through hole 111; wherein a plurality of draw the equidistant pin joint of claw 4 in connecting body 32 circumferencial direction to draw claw 4 by connecting portion 41, tight portion 42 in top and block portion 43 integrated into one piece, connecting portion 41 tilt up and the pin joint is on connecting body 32, tight portion 42 in top inwards inclines and with the tight dish 33 side contact in top, for make the tight portion 42 in top on the claw 4 of drawing be connected with tight dish 33 in top more stably, can specifically set up the tight dish 33 in top into the inverted circular truncated cone shape, the tight dish 33 in top side and the tight portion 42 in top of drawing claw 4 cooperate inseparably. The engaging portion 43 extends outward to receive the hydraulic tensioner piston 101, in order to facilitate replacement when replacing the pull claw 4, a plurality of pairs of protruding portions 321 may be disposed at equal intervals in the circumferential direction of the connecting body 32, a gap is left between each pair of protruding portions 321, the connecting portion 41 of the pull claw 4 is disposed in the gap, the pull claw 4 is pivoted on the pair of protruding portions 321 by a cylindrical pin 5, the cylindrical pin 5 is in interference fit with the protruding portions 321 and the pull claw 4, and the cylindrical pin 5 may be configured as a cylindrical pin with an internal thread in order to facilitate detachment of the cylindrical pin 5.

In actual use, the positions of the first support rod 21 and the second support rod 22 on the cross rod 1 are adjusted, the first support rod 21 and the second support rod 22 are supported on the cylinder body 100 of the hydraulic stretcher, the plurality of pulling claws 4 and the jacking disc 33 are positioned in the hydraulic stretcher piston 101, then the tooth rod 3 is screwed, the connecting body 32 is also screwed upwards, the plurality of pulling claws 4 are spread to the periphery under the action of the jacking disc 33, the clamping parts 43 on the plurality of pulling claws 4 are clamped on the flange extending inwards of the hydraulic stretcher piston 101, finally the adjusting thick nut 31 is screwed, the adjusting thick nut 31 is in threaded connection with the tooth rod 3, because the first support rod 21 and the second support rod 22 are supported on the cylinder body 100 of the hydraulic stretcher, the adjusting thick nut 31 is not displaced relative to the cross rod 1, when the adjusting thick nut 31 is screwed, because under the supporting and limiting effects of the cross rod 1, the threaded rod 3 moves upwards under the action of the threads, so that the hydraulic stretcher piston 101 is driven to move upwards, and the aim of disassembling the hydraulic stretcher piston 101 is fulfilled.

As a specific embodiment, in the present invention, as shown in fig. 4 and 5, in order to make the first support rod 21 and the second support rod 22 more firmly and reliably support the hydraulic stretcher cylinder 100, the first flange 213 is disposed at the lower end of the first support rod 21, the second flange 223 is disposed at the lower end of the second support rod 22, and the distance between the first flange 213 and the bottom surface of the first support rod 21 is the same as the distance between the second flange 223 and the bottom surface of the second support rod 22, so that the first support rod 21 and the second support rod 22 can be conveniently supported on the hydraulic stretcher cylinder 100, and the distance between the first support rod 21 and the second support rod 22 can be conveniently adjusted.

As an optimized solution, in the present embodiment, as shown in fig. 6, in order to make the first support bar 21 and the second support bar 22 slide from the crossbar 1, the left end side surface of the crossbar 1 is provided with a first pin hole 12, the right end side surface of the crossbar 1 is provided with a second pin hole 13, the first cotter pin 8 is inserted into the first pin hole 12, the second cotter pin 9 is inserted into the second pin hole 13, and the tail plate of the first cotter pin 8 and the second cotter pin 9 is opened to prevent the support bars from sliding.

As a preferred embodiment of the present invention, the pulling claw 4 is specifically set to be three.

In the description of the present invention, it is to be understood that the terms "length", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above embodiments are only descriptions of the preferred embodiments of the present invention, and are not intended to limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the present invention as defined by the claims.

Claims

1. A hydraulic tensioner piston take-down device, comprising:

the cross bar (1) is provided with a protruding platform (11) in the middle of the cross bar (1), and a through connecting through hole (111) is formed in the center of the protruding platform (11);

the supporting device comprises a first supporting rod (21) and a second supporting rod (22), wherein the first supporting rod (21) and the second supporting rod (22) are the same in length, a first through hole (211) is formed in the side wall of the upper end of the first supporting rod (21), the first supporting rod (21) is sleeved at the left end of a cross rod (1) through the first through hole (211), a first threaded hole (212) which is vertical and penetrates through the first through hole (211) is formed in the center of the upper top surface of the first supporting rod (21), and a first fixing bolt (6) is connected in the first threaded hole (212) in a threaded mode; a second through hole (221) is formed in the side wall of the upper end of the second support rod (22), the second support rod (22) is sleeved at the right end of the cross rod (1) through the second through hole (221), a second threaded hole (222) which is vertical to and penetrates through the second through hole (221) is formed in the center of the upper top face of the second support rod (22), and a second fixing bolt (7) is connected in the second threaded hole (222) in a threaded mode;

the tooth rod (3) is inserted into a connecting through hole (111) formed in the center of the protruding platform (11), a thick adjusting nut (31) is connected between the head of the tooth rod (3) and the protruding platform (11) in a threaded mode, and the tooth rod (3) penetrates through the connecting through hole (111) and then is sequentially connected with a connecting body (32) and a tightening disc (33) in a threaded mode from top to bottom;

and the pulling claws (4) are pivoted on the periphery of the connecting body (32) at equal intervals, each pulling claw (4) is integrally formed by a connecting part (41), a tightening part (42) and a clamping part (43), the connecting part (41) inclines upwards and is pivoted on the connecting body (32), the tightening part (42) inclines inwards and is in contact with the side surface of the tightening disc (33), and the clamping part (43) extends outwards to be used for receiving the hydraulic stretcher piston (101).

2. A hydraulic tensioner piston release mechanism as claimed in claim 1, characterized in that the coupling body (32) is provided with a plurality of pairs of protrusions (321) at equal intervals in the circumferential direction, a gap is left between each pair of protrusions (321), the coupling portion (41) of the pull tab (4) is placed in the gap, and the pull tab (4) is pivotally connected to the pair of protrusions (321) by a cylindrical pin (5).

3. A hydraulic tensioner piston dismounting device as claimed in claim 2, characterized in that said cylindrical pin (5) is a cylindrical pin with an internal thread.

4. A hydraulic tensioner piston release device as claimed in claim 3, characterized in that the tightening disc (33) is of an inverted truncated cone shape, the side of the tightening disc (33) cooperating with the tightening part (42) of the pulling claw (4).

5. A hydraulic tensioner piston dismounting device as claimed in claim 4, characterized in that the lower end of said first support bar (21) is provided with a first flange (213), the lower end of said second support bar (22) is provided with a second flange (223), the distance between the first flange (213) and the bottom surface of the first support bar (21) is the same as the distance between the second flange (223) and the bottom surface of the second support bar (22).

6. A hydraulic tensioner piston release mechanism as claimed in claim 5, characterized in that the cross bar (1) has a first pin hole (12) formed in the left end side, and a second pin hole (13) formed in the right end side, wherein the first pin hole (12) is adapted to receive the first cotter pin (8) therein, and the second pin hole (13) is adapted to receive the second cotter pin (9) therein.

7. A hydraulic tensioner piston take-down as claimed in claim 6, in which: the number of the pull claws (4) is specifically three.