Auxiliary support for disassembling swing arm shaft body

Abstract

The utility model belongs to the technical field of maintenance instruments, and particularly discloses an auxiliary support for disassembling a swing arm shaft body, which comprises a base, a jack, a first top plate and a push plate, the first top plate is fixedly connected with the base, the jack is fixedly connected onto the first top plate, and the movable end of the jack is connected with the push plate. A second top plate is arranged on the base, the second top plate is arranged at the tail end of the shaft body, an existing rocker arm dismounting device cannot be used for dismounting a plurality of swing arms of the long shaft body, and the shaft body may be damaged when the swing arms and the shaft body which are in interference fit are pulled out through rotation. The connecting part of the swing arm and the main shaft is uniformly heated through the spray gun, the jack is used for applying pressure to the main shaft after heating is completed, heating cannot be stopped in the pressure applying process, the swing arm and the main shaft are slowly separated from the original position, and therefore the purpose of not damaging the main shaft is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of repair instruments, and particularly relates to an auxiliary support for disassembling a swing arm shaft body. BACKGROUND

[0002] The swing arm shaft of a medium plate swing arm needs to be disassembled for repair. Four swing arms are distributed on the main shaft with a length of up to 8 meters and a diameter of 400 millimeters, and the main shaft and the swing arms are assembled with interference. The interference size is up to 40 microns. The technical agreement emphasizes that the main shaft size cannot be damaged and the main shaft cannot be deformed during disassembly and assembly. Related accessories must be removed for protection to facilitate repair under conditions such as reuse. Due to the long procurement period of professional disassembly equipment and the high price of professional disassembly tools, the repair period is tight, and other factors have fallen into a dilemma.

[0003] Patent CN113043209A discloses a simple tool for disassembling a steering rocker arm, which comprises a steering rocker arm and a disassembly tool. The disassembly tool comprises a center clamping belt, and the left and right ends of the surface of the center clamping belt are respectively provided with left and right clamping jaws. The right clamping jaw is slidably arranged on the slide rail. A first threaded hole is formed in the middle of the center clamping belt. A threaded sleeve is arranged in the first threaded hole. A top rod is arranged in the threaded sleeve. A fixed support is arranged above the center clamping belt. The left end surface of the fixed support is fixedly connected with the side wall of the left clamping jaw. A connecting block is arranged at the right end of the fixed support. A second threaded hole is formed in the connecting block. A push rod is threadedly connected in the second threaded hole. The top rod is rotated by an electric gun or a ratchet wrench, so that the top rod goes down until it stops on the output shaft of the steering device. The top rod is rotated, and the left and right clamping jaws will be forced to pull out the steering rocker arm from the output shaft of the circulating ball steering device.

[0004] However, the above-mentioned scheme cannot be used for disassembly of multiple swing arms of a long shaft body, and the swing arm and the shaft body assembled with interference may be damaged by rotating and pulling out. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing an auxiliary support for disassembling a swing arm shaft body to solve the problem that multiple swing arms of a long shaft body are difficult to disassemble, and the swing arm and the shaft body assembled with interference may be damaged by rotating and pulling out.

[0006] To achieve the above-mentioned purpose, the basic scheme provided by the utility model is an auxiliary support for disassembling a swing arm shaft body, which comprises a base, a jack, a first top plate and a push plate. The first top plate is fixedly connected with the base. The jack is fixedly connected on the first top plate. The movable end of the jack is connected with the push plate. A second top plate is arranged on the base. The second top plate is arranged at the end of the shaft body.

[0007] The utility model discloses a principle and beneficial effect lies in: since the shaft body is the reducing diameter shaft body of thick in the middle and thin in both ends, and the shaft end is limited by the first top plate and the push board, when the jack exerts force to the push board along the shaft body axial direction, the swinging arm is forced to translate from the one end of big diameter to the one end of small diameter, this process needs to heat the swinging arm, makes the swinging arm internal diameter bigger, this process avoids repeatedly twisting on the shaft body, thereby avoiding the surface friction of the swinging arm to the shaft body, and the shaft body is not subjected to torsional force, avoids the risk of fracture.

[0008] Scheme two, this is the preferred basic scheme, the first top plate and the second top plate are welded with the reinforcing rib. Increase the strength of the top plate, and the positioning is firm.

[0009] Scheme three, this is the preferred basic scheme, the base is equipped with the sliding slot, the sliding slot is equipped with the lead screw, the second top plate is fixedly connected with the sliding block, the lead screw is screwed through the sliding block, and the sliding block is slidably connected with the sliding slot. The lead screw sliding block mechanism can convert the rotation of the lead screw into the linear motion of the sliding block, and the positioning size can be flexibly adjusted by rotating the lead screw to remove the plurality of swinging arms on the shaft body.

[0010] Scheme four, this is the preferred basic scheme, the base is equipped with a plurality of positioning plates, and the positioning plates are distributed on the two sides of the shaft body. The positioning plates clamp the shaft body on the two sides of the shaft body, axially position the shaft body, prevent the shaft body from being offset, and prevent the shaft body from being bent.

[0011] Scheme five, this is the preferred basic scheme, the jack (2) is two, the jack (2) is placed symmetrically on the two sides of the shaft body (11), and the two jacks (2) are connected with the same hydraulic machine. The two jacks are simultaneously driven by the same hydraulic machine, so that the extension amount and the pressure of the two jacks are the same, the positions of the jacks are symmetrical, the shaft body is uniformly stressed, the risk of fracture and deformation is eliminated, and the safety hidden danger in operation is eliminated.

[0012] Scheme six, this is the preferred basic scheme, the base is welded with a backing plate. The shaft body is a reducing diameter shaft body, and the backing plate is used to keep the stress surface perpendicular to the axis to prevent the jack from being offset. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 It is the structure schematic diagram of the auxiliary support of the utility model discloses a kind of disassembling swinging arm shaft body;

[0014] Fig. 2 It is the top view of the auxiliary support of the utility model discloses a kind of disassembling swinging arm shaft body;

[0015] Fig. 3 It is the bottom view of the auxiliary support of the utility model discloses a kind of disassembling swinging arm shaft body. DETAILED DESCRIPTION

[0016] The utility model will be further explained in detail through specific implementation below:

[0017] The reference signs in the drawings of the specification include: 1 - base, 2 - jack, 3 - first top plate, 4 - push plate, 5 - second top plate, 6 - reinforcing rib, 7 - sliding slot, 8 - lead screw, 9 - sliding block, 10 - positioning plate, 11 - shaft body, 12 - swing arm, 13 - backing plate.

[0018] Embodiment

[0019] As Figs. 1 to 3 shown: a kind of auxiliary support of disassembling swing arm shaft body, including base 1, base 1 is welded with first top plate 3 and several positioning plates 10, first top plate 3 is welded with reinforcing rib 6, first top plate 3 is also fixedly connected with two jacks 2, two jacks 2 connect same hydraulic machine, jack 2 is in the two sides of the recess in first top plate 3, the other end of jack 2 is fixedly connected with push plate 4, sliding slot 7 is set in base 1, sliding slot 7 is fixedly connected with lead screw 8, sliding block 9 is screwed through in lead screw 8, sliding block 9 is slidably connected with sliding slot 7, sliding block 9 is welded with second top plate 5, second top plate 5 back is welded with reinforcing rib 6, base 1 is welded with backing plate 13, shaft body 11 is in the recess of first top plate 3 and push plate 4, the shaft end of shaft body 11 is against second top plate 5, swing arm 12 is close to push plate 4.

[0020] The implementation mode of this embodiment is: placing shaft body 11 on backing plate 13, so that shaft body 11 is in the recess of first top plate 3 and push plate 4, the swing arm 12 to be removed is close to push plate 4, rotating lead screw 8, so that second top plate 5 is against the shaft end of shaft body 11, using spray gun to uniformly heat the connecting part of swing arm 12 and shaft body 11, after heating is completed, starting jack 2, so that push plate 4 exerts pressure to second top plate 5, heating cannot stop in the process of exerting pressure, in this process, push plate 4 exerts thrust to swing arm 12, so that swing arm 12 moves to the shaft end direction, after swing arm 12 is removed, rotating lead screw 8, so that second top plate 5 retreats, the next swing arm 12 is moved forward to the front of push plate 4, and the previous operation is repeated.

[0021] The above-mentioned is only the embodiment of the utility model, and the well-known specific structure and characteristics in the scheme are not described too much here. It should be noted that, for those skilled in the art, without departing from the structure of the utility model, a number of deformations and improvements can be made, which should also be considered as the protection scope of the utility model, and these will not affect the effect and practicality of the utility model. The protection scope claimed in the present application should be subject to the content of its claims, and the specific implementation mode and the like recorded in the specification can be used to explain the content of the claims.

Claims

1. A support for assisting in the disassembly of a swing arm shaft body, characterised in that, Including base (1), jack (2), first roof (3) and push plate (4), first roof (3) is fixedly connected with base (1), jack (2) is fixedly connected on first roof (3), the movable end of jack (2) is connected with push plate (4), second roof (5) is arranged on base (1), second roof (5) is at the end of shaft body (11).

2. The auxiliary support for disassembling the swing arm shaft body according to claim 1, characterized in that First roof (3) and second roof (5) are welded with reinforcing rib (6).

3. The auxiliary support for disassembling a swing arm shaft body according to claim 1, characterized in that, The sliding slot (7) is provided on the base (1), the screw rod (8) is provided in the sliding slot (7), the sliding block (9) is fixedly connected with the second roof (5), the screw rod (8) is screwed through the sliding block (9), and the sliding block (9) is slidably connected with the sliding slot (7).

4. The auxiliary support for disassembling a swing arm shaft body according to claim 1, wherein The base (1) is provided with a plurality of positioning plates (10), and the positioning plates (10) are on both sides of the shaft body (11).

5. The auxiliary support for disassembling a swing arm shaft body according to claim 1, characterized in that The jack (2) has two, the jack (2) is placed symmetrically on both sides of the shaft body (11), and the two jacks (2) are connected with the same hydraulic machine.

6. The auxiliary support for disassembling a swing arm shaft body according to claim 1, characterized in that The base (1) is welded with a backing plate (13).

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