Hydraulic oil cylinder pipe clamp

Abstract

The utility model discloses a hydraulic oil cylinder pipe clamp, and belongs to the technical field of engineering machinery. The hydraulic oil cylinder pipe clamp overcomes the defects that in the prior art, a traditional hydraulic oil cylinder pipe clamp is prone to cracking of welding seams, low in structural strength and poor in reliability. The main structure of the device comprises a clamp used for fixing a hydraulic oil cylinder, a first supporting plate, a second supporting plate and a fixing plate are arranged on the arc outer surface of the clamp, the first supporting plate and the second supporting plate are symmetrically arranged in parallel, and the arc surfaces of the first supporting plate and the second supporting plate coincide with the arc outer surface of the clamp. The fixing plate is arranged between the first supporting plate and the second supporting plate, and a screw seat used for fixing the hydraulic steel pipe is arranged on the outer surface of the fixing plate. The utility model is mainly applied to engineering machinery such as excavators and the like.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of engineering machinery, concretely speaking, especially relates to a hydraulic cylinder pipe clamp. BACKGROUND

[0002] The hydraulic cylinder of the excavator includes a boom cylinder, a bucket cylinder and a stick cylinder, which are used to control the movement and force output of the working device. Generally, the oil port of the hydraulic cylinder is connected by a steel pipe, so the steel pipe will move frequently with the hydraulic cylinder when the excavator is working. In order to avoid the vibration of the steel pipe during the violent movement, the steel pipe is fixed by the hydraulic cylinder pipe clamp. However, due to the unreasonable structure design of the hydraulic cylinder pipe clamp, the fatigue strength of the hydraulic cylinder pipe clamp cannot meet the working requirements, which leads to the cracking of the pipe clamp and other faults. Therefore, it is urgent to design a high-reliability and high-strength hydraulic cylinder pipe clamp.

[0003] The existing excavator hydraulic cylinder pipe clamp scheme is shown in Figure 8 It includes a bent plate 7, a fixed plate 8, a cylindrical wire seat 9, a rib plate 10 and a nut. The bent plate has through holes on the flat surface, two on each end. The nut is welded on the flat through hole. The fixed plate has a round hole for welding the cylindrical wire seat, and the cylindrical wire seat is fixed with the hydraulic pipe. The fixed plate is a rectangular steel plate, one end of which is welded to the curved surface of the bent plate. The rib plate is welded between the curved surface of the bent plate and the flat surface of the fixed plate, which is used to support the fixed plate and play a reinforcing role. However, the scheme has the following disadvantages:

[0004] 1. The existing hydraulic cylinder pipe clamp has only one end of the fixed plate welded to the bent plate, which causes the cantilevered fixed plate to be too long and has poor stress performance. When the welding parameters and quality requirements do not meet the standards, it is easy to cause problems such as cracking of the weld. 2. Since there is only one rib plate to support the fixed plate, when the hydraulic cylinder moves at high strength and high frequency, combined with the impact of external force, the load cannot be evenly distributed on the fixed plate, resulting in low structural strength and poor reliability. UTILITY MODEL CONTENTS

[0005] The technical problem to be solved by the utility model is to overcome the shortcomings of the prior art, and a hydraulic cylinder pipe clamp is provided.

[0006] In order to achieve the above purpose, the utility model is implemented by adopting the following technical scheme:

[0007] A hydraulic cylinder pipe clamp, comprising a clamp for fixing a hydraulic cylinder, a first support plate, a second support plate and a fixed plate are arranged on the outer curved surface of the clamp, the first support plate and the second support plate are arranged in parallel and symmetry, and the curved surfaces of the first support plate and the second support plate coincide with the outer curved surface of the clamp, the fixed plate is arranged between the first support plate and the second support plate, and a wire seat for fixing a hydraulic steel pipe is arranged on the outer surface of the fixed plate.

[0008] Preferably, reinforcing ribs are arranged on the inner surface of the fixing plate to reinforce the structure of the fixing plate.

[0009] Preferably, the fixing plate is a bent plate, and one side of the short edge of the fixing plate is welded on the outer surface of the circular arc of the clamp.

[0010] Preferably, the two sides of the fixing plate are welded to the first support plate and the second support plate respectively, and the first support plate, the second support plate and the fixing plate form a U-shaped box structure.

[0011] Preferably, first through holes are arranged on the fixing plate to reduce the weight.

[0012] Preferably, second through holes are arranged on the first support plate and the second support plate to reduce the weight.

[0013] Preferably, the clamp is a semicircular ring-shaped double-sided structure, the clamp includes a circular arc region and a planar region, the inner diameter of the circular arc region of the clamp is greater than or equal to the outer diameter of the hydraulic oil cylinder, the planar region is distributed on both sides of the clamp, and a welding nut is arranged on the planar region.

[0014] Compared with the prior art, the utility model has the advantages of:

[0015] 1. The circular arc surfaces of the first support plate and the second support plate coincide with the outer surface of the circular arc of the clamp, the first support plate and the second support plate are arranged opposite to each other in space, the fixing plate is welded between the two support plates, thereby forming a U-shaped box type reinforcing structure, the structural rigidity of the oil cylinder pipe clamp as a whole is enhanced, the pipe clamp is beneficial to shock absorption, at the same time, the stress and impact load of the fixing plate do not concentrate on the welding seam, welding stress is reduced, the reliability of the oil cylinder pipe clamp is improved, and the fatigue strength is enhanced.

[0016] 2. Reinforcing ribs are welded on the inner surface of the fixing plate to reinforce the structure of the fixing plate, that is, the surface towards the inside of the bent fixing plate, and the reinforcing ribs are arranged at a certain interval along the length direction of the fixing plate, therefore, the structure of the fixing plate can be reinforced by the reinforcing ribs, stress unevenness of the fixing plate due to overlong cantilever is prevented, and stress deformation is reduced.

[0017] 3. One side of the short edge of the fixing plate is welded on the outer surface of the circular arc of the clamp, thereby reducing the cantilever length of the fixing plate; first through holes are arranged on the fixing plate to reduce the weight, circular through holes are formed on the bent plate, and lightweight treatment is performed, so that the weight of the fixing plate is reduced.

[0018] 4. The first support plate and the second support plate are triangular steel plates, the cross section of the triangular steel plate is triangular, and the triangular steel plate has high stability and reliability; second through holes with a certain diameter are formed on the surface of the first support plate and the second support plate to reduce the weight of the first support plate and the second support plate.

[0019] In summary, the utility model has higher support strength, and fatigue impact resistance, avoid the problem of pipe clamp rupture, weld open weld caused by uneven stress, frequent impact of fixed plate. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is one of structure schematic drawing of the utility model;

[0021] Figure 2 It is second structure schematic drawing of the utility model;

[0022] Figure 3 It is structure schematic drawing of the utility hoop in the utility model;

[0023] Figure 4 It is structure schematic drawing of the first support plate in the utility model;

[0024] Figure 5 It is structure schematic drawing of the fixed plate in the utility model;

[0025] Figure 6 It is position schematic drawing of the first support plate and the second support plate in the utility model;

[0026] Figure 7 It is structure schematic drawing of the utility model installation and use state;

[0027] Figure 8 It is structure schematic drawing of the existing excavator oil cylinder pipe clamp.

[0028] In the drawing: 1, hoop; 3, silk seat; 4, fixed plate; 5, welding nut; 6, reinforcing rib plate; 7, bent plate; 8, fixed plate; 9, cylindrical silk seat; 10, rib plate; 21, first support plate; 22, second support plate; 23, second through hole; 41, first through hole. DETAILED DESCRIPTION

[0029] The utility model will be further described below by specific embodiment and in conjunction with the drawings.

[0030] Example 1:

[0031] As Figures 1-2As shown, a hydraulic cylinder pipe clamp includes a clamp 1 for fixing a hydraulic cylinder. A first support plate 21, a second support plate 22, and a fixing plate 4 are welded to the outer arc surface of the clamp 1. The first support plate 21 and the second support plate 22 are arranged in parallel and symmetrically, and the arc surfaces of the first support plate 21 and the second support plate 22 coincide with the outer arc surface of the clamp 1. The fixing plate 4 is disposed between the first support plate 21 and the second support plate 22. A threaded seat 3 for fixing a hydraulic steel pipe is provided on the outer surface of the fixing plate 4. The threaded seat 3 is a rectangular threaded seat and is welded to the outer surface of the fixing plate 4, that is, the surface bent outward toward the fixing plate 4, for fixing the hydraulic steel pipe arranged on the hydraulic cylinder.

[0032] Specifically, such as Figure 6 As shown, during welding, the distance between the lower surface of the first support plate 21 and the lower side of the clamp 1 is H, and the distance between the upper surface of the second support plate 22 and the upper side of the clamp 1 is H. The range of H is 0mm < H < 10mm, that is, the first support plate 21 and the second support plate 22 are arranged symmetrically up and down along the axis of the clamp 1. In addition, the arc surfaces of the first support plate 21 and the second support plate 22 coincide with the arc of the clamp 1. A fixing plate 4 is welded between the first support plate 21 and the second support plate 22, that is, the fixing plate 4 is sandwiched between the first support plate 21 and the second support plate 22, and the width of the fixing plate 4 is equal to the distance H1 between the upper surface of the first support plate 21 and the lower surface of the second support plate 22. In summary, the first support plate 21 and the second support plate 22 are arranged vertically relative to each other in space, and the fixing plate 4 is welded between the two support plates, thus forming a U-shaped box-type reinforced structure. This enhances the overall structural rigidity of the hydraulic cylinder pipe clamp, which is beneficial for pipe clamp vibration reduction. At the same time, it prevents the force and impact load on the fixing plate 4 from being concentrated on the weld, reducing welding stress, improving the reliability of the hydraulic cylinder pipe clamp, and enhancing fatigue strength.

[0033] Example 2:

[0034] A hydraulic cylinder clamp differs from Embodiment 1 in that a reinforcing rib plate 6 is welded to the inner surface of the fixing plate 4 to strengthen its structure. This reinforcing rib plate 6 is located on the surface bent inwards towards the fixing plate 4 and is arranged at certain intervals along the length of the fixing plate 4. The height of the reinforcing rib plate 6 is equal to the distance H1 between the upper surface of the first support plate 21 and the lower surface of the second support plate 22. Furthermore, the reinforcing rib plate 6 has a rectangular cross-section made of Q355B steel plate, with chamfered corners and beveled edges on two sides for easy welding. Therefore, the reinforcing rib plate 6 strengthens the structure of the fixing plate 4, preventing uneven stress caused by excessive cantilever length and reducing its deformation under stress.

[0035] like Figure 5As shown, the fixing plate 4 is a bent plate, and the short side of the fixing plate 4 is welded on the outer surface of the circular arc of the clamp 1, so as to reduce the cantilever length of the fixing plate 4; and the fixing plate 4 is provided with a first through hole 41 for weight reduction, and the circular through hole is opened on the bent plate, so as to reduce the weight of the fixing plate 4.

[0036] As shown in the drawings, Figure 4 As shown, the first support plate 21 and the second support plate 22 are provided with a second through hole 23 for weight reduction; specifically, the first support plate 21 and the second support plate 22 are triangular steel plates, and the cross section is triangular, which has high stability and reliability; the center of the left circular arc of the first support plate 21 and the second support plate 22 is concentric with the circular arc area of the clamp 1, and the diameter of the left circular arc of the first support plate 21 and the second support plate 22 is equal to the outer diameter of the circular arc area of the clamp 1, and a welding groove is arranged on the left side of the circular arc, which is used for welding the first support plate 21 and the second support plate 22 to the clamp 1. The surface of the first support plate 21 and the second support plate 22 is provided with a second through hole 23 with a certain diameter, which is used for reducing the weight of the first support plate 21 and the second support plate 22.

[0037] As shown in the drawings, Figure 3 As shown, the clamp 1 is a semicircular ring double-sided structure, and the clamp 1 includes a circular arc area and a flat area, and the inner diameter of the circular arc area of the clamp 1 is greater than or equal to the outer diameter of the hydraulic cylinder, so as to be fixed on the hydraulic cylinder; the flat area is distributed on both sides of the clamp 1, and a through hole is arranged on the flat area, and a welding nut 5 is welded, and in the embodiment, there are 8 through holes in total, 4 on each side, and the number of through holes is doubled compared with the prior art, so that the oil cylinder pipe clamp is fixed on the oil cylinder more reliably.

[0038] As shown in the drawings, Figure 7 As shown, the hydraulic cylinder is provided with a large cavity oil port and a small cavity oil port, and a hydraulic pipeline is assembled from the oil port of the hydraulic cylinder, and one end of the hydraulic pipe clamp of the embodiment is fixed on the surface of the hydraulic cylinder body, and the other end of the pipe clamp is fixed on the hydraulic pipeline through a wire seat 3.

Claims

1. A hydraulic cylinder tube clamp comprising a clamp (1) for securing a hydraulic cylinder, characterized in that: The outer surface of the circular arc of the clamp (1) is provided with a first support plate (21), a second support plate (22) and a fixed plate (4), the first support plate (21) and the second support plate (22) are symmetrically arranged in parallel, and the circular arc surfaces of the first support plate (21) and the second support plate (22) coincide with the outer surface of the circular arc of the clamp (1), the fixed plate (4) is arranged between the first support plate (21) and the second support plate (22), and the outer surface of the fixed plate (4) is provided with a wire seat (3) for fixing the hydraulic steel pipe.

2. The hydraulic cylinder tube clamp of claim 1, wherein: The inner surface of the fixed plate (4) is provided with a reinforcing rib plate (6) for reinforcing the structure of the fixed plate (4).

3. The hydraulic cylinder tube clamp of claim 1, wherein: The fixed plate (4) is a bent plate, and one side of the short edge of the fixed plate (4) is welded on the outer surface of the circular arc of the clamp (1).

4. The hydraulic cylinder tube clamp of claim 3, wherein: The two side faces of the fixed plate (4) are respectively welded and connected with the first support plate (21) and the second support plate (22), and the first support plate (21), the second support plate (22) and the fixed plate (4) form a U-shaped box structure.

5. Hydraulic ram tube clamp according to any of claims 1-4, characterized in that: The fixed plate (4) is provided with a first through hole (41) for weight reduction.

6. The hydraulic cylinder tube clamp of any one of claims 1-4, wherein: The first support plate (21) and the second support plate (22) are provided with a second through hole (23) for weight reduction.

7. The hydraulic cylinder tube clamp of any one of claims 1-4, wherein: The clamp (1) is a semicircular ring double-sided structure, the clamp (1) includes a circular arc region and a plane region, the inner diameter of the circular arc region of the clamp (1) is greater than or equal to the outer diameter of the hydraulic oil cylinder, the plane region of the clamp (1) is distributed on both sides of the clamp (1), and a welded nut (5) is arranged on the plane region.

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