Shock absorber structure of overturning cab of engineering machinery

Abstract

The utility model discloses a shock absorber structure of a turnover cab of engineering machinery, which belongs to the field of engineering machinery, and is characterized in that when the cab is turned over or dropped to be mounted, a shock absorber is well fixed and does not need to be reassembled and calibrated, the shock absorber can be prevented from being lost and damaged during maintenance, and the maintenance efficiency is effectively improved. The shock absorber structure mainly comprises a cab bottom plate and a support, a shock absorber structure is arranged between the cab bottom plate and the support and comprises a positioning tightening piece and a shock absorber, a threaded hole is formed in the positioning tightening piece, the shock absorber is arranged at a mounting hole of the cab bottom plate, and an inner ring of the shock absorber is arranged on the outer side wall of the positioning tightening piece in a sleeving mode. The positioning tightening piece is arranged on the support, the upper end of the shock absorber is matched and fastened with the threaded hole through a fastener, and the lower end of the support is matched and fastened with the threaded hole through a fastener. The shock absorber is mainly used for shock absorption of the overturning cab of the excavator.

Description

Technical Field

[0001] The utility model relates to the field of engineering machinery, in particular to a shock absorber structure of a flip cab of engineering machinery. Background Art

[0002] Excavators can be used in various production and construction projects, especially in road construction, forestry and mining, urban infrastructure and other fields. In order to facilitate the maintenance of the lower side parts of the excavator cab, some excavators use the method of flipping the cab. When flipping, the shock absorber structure needs to be disassembled. The process of disassembling and flipping the cab may cause the shock absorber to fall off or be lost.

[0003] At present, there is a solution of using long bolts with double nuts to fix the shock absorber. This solution uses one nut to fix the shock absorber structure, and the other nut is used to fix the shock absorber structure on the bracket side. The shock absorber structure can be released from the bracket by removing the nut on the bracket side, and the shock absorber structure can be flipped with the cab. However, this structure has the following two disadvantages:

[0004] 1. This structure requires the use of long bolts, which require a larger space to avoid interference during the flipping and falling process. The bracket needs to have a large hole, which weakens the strength of the bracket in disguise.

[0005] 2. This structure has no anti-rotation function. When tightening or removing the nut, the original shock absorber structure will be twisted, affecting the performance of the shock absorber. Utility Model Content

[0006] The purpose of the utility model is to provide a shock absorber structure for a flip cab of an engineering machinery, wherein the shock absorber is well fixed when the cab is flipped or dropped for installation, and no reassembly and calibration are required, which can also avoid the shock absorber from being lost or damaged during maintenance, thereby effectively improving the maintenance efficiency. A fixing tool or a wrench is used to tighten the tightening seat to fix the shock absorber, thereby solving the problem of the shock absorber rotating at the same time when tightening or removing the fastening bolts on the bottom plate side of the cab.

[0007] The utility model is realized by the following technical solutions:

[0008] A shock absorber structure for a flip cab of an engineering machinery comprises a cab floor and a bracket, a shock absorber structure is arranged between the cab floor and the bracket, the shock absorber structure comprises a positioning fastener and a shock absorber, a threaded hole is arranged in the positioning fastener, a shock absorber is arranged at the mounting hole of the cab floor, and an inner ring of the shock absorber is arranged on the outer side wall of the positioning fastener, the positioning fastener is arranged on the bracket, the upper end of the shock absorber is fastened with the threaded hole by a fastener, and the lower end of the bracket is fastened with the threaded hole by a fastener.

[0009] Furthermore, the positioning tightening member comprises a tightening seat, a limiting sleeve is welded on the tightening seat, and a connecting threaded hole is provided in the center of the tightening seat and the limiting sleeve.

[0010] Furthermore, the shock absorber includes an upper shock absorber and a lower shock absorber, the upper shock absorber is located on the upper end surface of the mounting hole of the cab floor, and the lower shock absorber is located between the lower end surface of the mounting hole of the cab floor and the upper end surface of the tightening seat, the inner rings of the upper shock absorber and the lower shock absorber are both sleeved on the outer side wall of the limiting sleeve, and the limiting sleeve passes through the shock absorber to prevent the shock absorber from falling during disassembly.

[0011] Furthermore, the fastener includes a fastening bolt, a small gasket and a large gasket. The fastening bolt passes through the small gasket and the large gasket in sequence and then tightens the upper shock absorber to the upper end of the limiting sleeve. The fastening bolt passes through the small gasket, the large gasket and the bracket in sequence and then tightens the lower shock absorber to the upper end surface of the tightening seat, so that the upper shock absorber and the lower shock absorber clamping bracket can achieve a buffering effect.

[0012] Furthermore, the outer side wall of the tightening seat is a hexagonal structure, which is convenient for tightening the tightening seat with a wrench to prevent the shock absorber from rotating during tightening.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the shock absorber installation structure is used, the shock absorber is well fixed when the cab is flipped or dropped for installation, and there is no need to reassemble and calibrate it. It can also avoid the shock absorber from being lost or damaged during maintenance, effectively improving maintenance efficiency.

[0015] 2. The positioning tightening piece is a welded structure of a tightening seat and a limiting sleeve. Use a fixed tool or a wrench to tighten the tightening seat to fix the shock absorber, so as to solve the problem that the shock absorber rotates at the same time when tightening or removing the fastening bolts on the side of the cab floor. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the installation of the shock absorber structure of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the positioning and tightening member of the utility model.

[0019] In the figure: 1. cab; 2. cab bottom plate; 3. shock absorber structure; 4. bracket; 301. fastening bolt; 302. small gasket; 303. large gasket; 304. shock absorber; 305. positioning fastener; 30501. tightening seat; 30502. limiting sleeve. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings.

[0021] Example 1

[0022] like Figure 1 As shown, a shock absorber structure of a flip cab of an engineering machinery includes a cab floor 2 and a bracket 4 provided at the bottom of a cab 1, a shock absorber structure 3 is provided between the cab floor 2 and the bracket 4, the shock absorber structure 3 includes a positioning fastener 305 and a shock absorber 304, a threaded hole is provided in the positioning fastener 305, the shock absorber 304 is provided at the mounting hole of the cab floor 2, and the inner ring of the shock absorber 304 is sleeved on the outer side wall of the positioning fastener 305, the positioning fastener 305 is provided on the bracket 4, the upper end of the shock absorber 304 is fastened with the threaded hole by a fastener, and the lower end of the bracket 4 is fastened with the threaded hole by a fastener.

[0023] Example 2

[0024] like Figure 2 – Figure 3 As shown, a shock absorber structure for a flip cab of an engineering machinery, the positioning tightening member 305 includes a tightening seat 30501, a limiting sleeve 30502 is welded on the tightening seat 30501, and a threaded hole is connected to the center of the tightening seat 30501 and the limiting sleeve 30502; the outer wall of the tightening seat 30501 is a hexagonal structure, which is convenient for tightening the tightening seat 30501 with a wrench to prevent the shock absorber 304 from rotating when tightening; the shock absorber 304 includes an upper shock absorber and a lower shock absorber, the upper shock absorber is located at the upper end face of the mounting hole of the cab floor 2, and the lower shock absorber is located between the lower end face of the mounting hole of the cab floor 2 and the upper end face of the tightening seat 30501, and the inner circles of the upper shock absorber and the lower shock absorber are It is sleeved on the outer wall of the limiting sleeve 30502, and the limiting sleeve 30502 passes through the shock absorber 304 to prevent the shock absorber 304 from falling during disassembly; the fastener includes a fastening bolt 301, a small gasket 302 and a large gasket 303, and the fastening bolt 301 passes through the small gasket 302 and the large gasket 303 in turn, and then the upper shock absorber is tightened to the upper end of the limiting sleeve 30502, and the fastening bolt 301 passes through the small gasket 302, the large gasket 303 and the bracket 4 in turn, and then the lower shock absorber is tightened to the upper end surface of the tightening seat 30501, so that the upper shock absorber and the lower shock absorber clamp the bracket 4 to achieve a buffering effect, and the height of the limiting sleeve 30502 is less than the total thickness of the upper shock absorber and the lower shock absorber, and the rest is the same as Example 1.

[0025] When the cab 1 and the cab floor 2 need to be flipped over, the fastening bolts 301 on the bracket 4 side are removed, and the shock absorber structure 3 is disconnected from the bracket. At this time, the fastening bolts 301 on the upper shock absorber side are still fixed on the limiting sleeve 30502, so the upper shock absorber and the lower shock absorber can still be firmly fixed on the cab floor 2, and will rise as the cab floor 2 is flipped over, and will not loosen or be lost.

[0026] When the cab 1 and the cab floor 2 are lowered for installation, the shock absorber structure 3 falls onto the bracket 4 along with the cab floor 2. The shock absorber structure 3 is fixed to the bracket by tightening the small gasket 302, the large gasket 303, and the fastening bolts 301 on the side of the cab floor 2, thereby achieving an effective shock absorption effect.

[0027] When removing or tightening the fastening bolts 301 on the side of the cab floor 2, in order to prevent the shock absorber structure 3 from rotating with it, a fixing tool or a wrench can be used to fix the tightening seat 30501 to fix the shock absorber 304, thereby solving the problem of the shock absorber 304 rotating at the same time when tightening or removing the fastening bolts 301 on the side of the cab floor 2.

Claims

1. A shock absorber structure for a tilting cab of an engineering machinery, comprising a cab bottom plate (2) and a bracket (4), wherein a shock absorber structure (3) is arranged between the cab bottom plate (2) and the bracket (4), and characterized in that: The shock absorber structure (3) comprises a positioning fastener (305) and a shock absorber (304), wherein a threaded hole is provided in the positioning fastener (305), the shock absorber (304) is provided at the mounting hole of the cab floor (2), and the inner ring of the shock absorber (304) is sleeved on the outer wall of the positioning fastener (305), the positioning fastener (305) is arranged on the bracket (4), the upper end of the shock absorber (304) is fastened by the fastener and the threaded hole, and the lower end of the bracket (4) is fastened by the fastener and the threaded hole.

2. The shock absorber structure for the engineering machinery flip cab according to claim 1 is characterized in that: The positioning tightening member (305) comprises a tightening seat (30501), a limiting sleeve (30502) is welded on the tightening seat (30501), and a connecting threaded hole is provided at the center of the tightening seat (30501) and the limiting sleeve (30502).

3. The shock absorber structure of the engineering machinery flip cab according to claim 2 is characterized in that: The shock absorber (304) comprises an upper shock absorber and a lower shock absorber, wherein the upper shock absorber is located on the upper end surface of the mounting hole of the cab floor (2), and the lower shock absorber is located between the lower end surface of the mounting hole of the cab floor (2) and the upper end surface of the tightening seat (30501), and the inner rings of the upper shock absorber and the lower shock absorber are both sleeved on the outer side wall of the limiting sleeve (30502).

4. The shock absorber structure for the engineering machinery flip cab according to claim 3 is characterized in that: The fastener comprises a fastening bolt (301), a small gasket (302) and a large gasket (303); the fastening bolt (301) passes through the small gasket (302) and the large gasket (303) in sequence, and then the upper shock absorber is tightened to the upper end of the limiting sleeve (30502); the fastening bolt (301) passes through the small gasket (302), the large gasket (303) and the bracket (4) in sequence, and then the lower shock absorber is tightened to the upper end surface of the tightening seat (30501).

5. The shock absorber structure of the engineering machinery flip cab according to claim 2 is characterized in that: The outer side wall of the tightening seat (30501) is a hexagonal structure.

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