Suspension oil cylinder of wheel excavator

Abstract

The utility model belongs to the technical field of suspension oil cylinders, and particularly relates to a wheel excavator suspension oil cylinder which comprises an oil cylinder body, a fixing block is fixedly welded to the bottom of the oil cylinder body, and an I-shaped block is fixedly connected to the bottom of the fixing block. The fixed seat is arranged under the fixed block, and the upper surface of the fixed seat is provided with an insertion groove capable of allowing the I-shaped block to be inserted therein; the fixing base is arranged, the inserting groove is formed in the upper surface of the fixing base, the limiting block is arranged in the inserting groove, the limiting block is used for restraining and limiting the I-shaped block, and the rack is driven by arranging the driving limiting assembly; the inconvenience that tools such as a sledge hammer and a steel chisel need to be used when a traditional suspension oil cylinder is disassembled and assembled, and a pin shaft can be disassembled only with large force is changed, manpower consumption is reduced, and the assembling and disassembling efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of suspension oil cylinders, in particular to a suspension oil cylinder for a wheeled excavator. Background Art

[0002] For vehicles, in order to ensure their stability, adapt to various complex roads or ensure comfort during travel, various technologies are used to absorb the buffering of the entire vehicle. For example, the chassis of large-tonnage truck cranes used to be equipped with leaf springs for buffering, but with the continuous advancement of technology, leaf springs are no longer used to absorb the buffering of the entire vehicle on uneven roads, but suspension cylinders are used to achieve this, and now wheeled excavators also use suspension cylinders to achieve buffering.

[0003] The two ends of the existing suspension cylinder are often connected to the vehicle chassis and the vehicle body respectively through a latch. After long-term use, the connection between the latch and the suspension cylinder is in a tightly connected state. When installing and disassembling, the installer needs to use a sledgehammer or a steel chisel to hit it vigorously to remove the fixed latch from the fixing hole and replace and maintain the suspension cylinder. This process is time-consuming and labor-intensive, and the efficiency is extremely low. Therefore, a corresponding fixing device that is easy to install and disassemble is urgently needed to connect the suspension cylinder to the vehicle body. In view of this, we propose a suspension cylinder for a wheeled excavator. Utility Model Content

[0004] The utility model aims to provide a suspension cylinder for a wheeled excavator to solve the problems raised in the above-mentioned background technology.

[0005] In view of this, the utility model provides a wheeled excavator suspension cylinder, comprising:

[0006] An oil cylinder body, a fixing block is welded and fixed to the bottom of the oil cylinder body, and an I-shaped block is fixedly connected to the bottom of the fixing block;

[0007] A fixed seat, the fixed seat is arranged just below the fixed block, a slot for accommodating the insertion of the I-shaped block is provided on the upper surface of the fixed seat, and slide grooves are symmetrically provided on the inner walls on the left and right sides of the slot, a limit block is slidably connected in the slide groove, a spring is provided between the limit block and the inner wall of the slide groove, and the two ends of the spring are respectively fixed to the side wall of the limit block and the inner wall of the slide groove, a rack is fixedly connected to the side wall of the limit block and located between the two springs, and the other end of the rack passes through the inner wall of the slide groove and extends to the outside;

[0008] Two driving limit assemblies are symmetrically arranged and respectively located on the left and right sides of the fixed seat, and are used to control the two racks to slide inward or outward.

[0009] In the technical solution, a fixed seat is provided, a slot is opened on the upper surface of the fixed seat, and a limit block is provided in the slot. The limit block is used to constrain and limit the I-shaped block, and the rack is driven by providing a driving limit assembly. This changes the inconvenience of the traditional suspension cylinder, which requires the use of tools such as a sledgehammer and a steel chisel during disassembly and installation, and requires a large force to disassemble the pin shaft. This reduces manpower consumption and improves installation and disassembly efficiency.

[0010] In the above technical solution, further, the driving limit assembly includes:

[0011] The gear is located on the peripheral side of the fixed seat and is meshed with the corresponding rack. The outer wall of the gear is coaxially connected with a ratchet, and a pawl is clamped on the ratchet. The peripheral side of the pawl is provided with a support rod fixed to the side wall of the fixed seat, and the pawl cooperates with the support rod rotating rod. A motor is provided on the peripheral side of the gear, and the output shaft of the motor is coaxially connected with the gear.

[0012] In the present technical solution, a driving limit assembly is provided and driven by a motor, thereby changing the inconvenience of the traditional device requiring manual disassembly and improving the disassembly efficiency. In addition, by providing a ratchet and a pawl, the motor's own consumption is reduced and the service life of the motor is extended.

[0013] In the above technical solution, further, a support plate is fixedly connected to the side wall of the fixing seat and is located directly below the motor, and the motor is fixedly mounted on the upper surface of the support plate.

[0014] In this technical solution, a support plate is provided to facilitate fixing of the motor.

[0015] In the above technical solution, further, a support block is fixedly connected to the surface wall on the same side of the support rod and the pawl, and the upper surface of the support block is adapted to the upper surface of the pawl.

[0016] In the technical solution, the pawl can be effectively supported by providing a support block.

[0017] In the above technical solution, further, a shield is fixedly connected to the side wall of the fixed seat and located outside the drive limit assembly. The shield is a hollow structure with an opening at the bottom. A through hole is opened on the side wall of the shield to accommodate the rack.

[0018] In the present technical solution, by providing a protective cover, during the operation of the excavator, the protective cover can effectively block splashing sand, gravel and mud from the external environment, thereby avoiding adverse effects on the drive limit assembly inside the protective cover.

[0019] In the above technical solution, further, mounting feet are symmetrically fixed to the side walls of the fixing seat near the bottom edge, and the mounting feet are provided with evenly distributed through holes.

[0020] In the technical solution, by providing a plurality of mounting legs, it is convenient to effectively and firmly fix the fixing base to the excavator.

[0021] In the above technical solution, further, the I-shaped block is plug-fitted with the slot, and the limit block is snap-fitted with the I-shaped block.

[0022] The beneficial effects of the utility model are:

[0023] The wheeled excavator suspension cylinder is provided with a fixed seat, and a slot is opened on the upper surface of the fixed seat, and a limit block is provided in the slot. The limit block is used to constrain and limit the I-shaped block, and the rack is driven by providing a driving limit component. This changes the inconvenience of the traditional suspension cylinder that requires the use of tools such as a sledgehammer and a steel chisel during disassembly and installation, and requires a large force to disassemble the pin shaft, thereby reducing manpower consumption and improving installation and disassembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0025] Figure 2 This is a structural exploded view of the oil cylinder body and the fixing seat in the utility model;

[0026] Figure 3 This is a structural exploded view of the fixing seat in the utility model;

[0027] Figure 4 It is a structural schematic diagram of the drive limit assembly in the utility model.

[0028] The symbols in the figure are:

[0029] 1. Cylinder body; 2. Fixed block; 3. I-shaped block; 4. Fixed seat; 5. Slot; 6. Slide; 7. Limit block; 8. Spring; 9. Rack; 10. Gear; 11. Ratchet; 12. Support rod; 13. Paw; 14. Support block; 15. Support plate; 16. Motor; 17. Protective cover; 18. Mounting feet. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0031] Embodiment 1:

[0032] See also Figure 1 - Figure 4 As shown, this embodiment provides a wheeled excavator suspension cylinder, comprising:

[0033] The oil cylinder body 1 has a fixing block 2 welded and fixed at the bottom thereof, and an I-shaped block 3 is fixedly connected to the bottom of the fixing block 2;

[0034] A fixed seat 4 is arranged directly below the fixed block 2. A slot 5 for accommodating the I-shaped block 3 is provided on the upper surface of the fixed seat 4. Slide grooves 6 are symmetrically provided on the inner walls on the left and right sides of the slot 5. A limit block 7 is slidably connected in the slide groove 6. A spring 8 is provided between the limit block 7 and the inner wall of the slide groove 6, and the two ends of the spring 8 are respectively fixed to the side wall of the limit block 7 and the inner wall of the slide groove 6. A rack 9 is fixedly connected to the side wall of the limit block 7 and located between the two springs 8, and the other end of the rack 9 passes through the inner wall of the slide groove 6 and extends to the outside;

[0035] Two driving limit assemblies are symmetrically arranged and respectively located on the left and right sides of the fixing seat 4, and are used to control the two racks 9 to slide inward or outward.

[0036] During installation, the fixing seat 4 is first installed on the arm of the wheeled excavator, and then the I-shaped block 3 at the bottom of the oil cylinder body 1 is aligned with the slot 5 and inserted. During the insertion of the I-shaped block 3 into the slot 5, the I-shaped block 3 will squeeze the two limit blocks 7 on the left and right sides of the slot 5 and squeeze the spring 8. The spring 8 pushes the rack 9 to move outward. It is worth adding that, as shown in the I-shaped block 3, there is no tooth pattern on the rack 9 located in the slide groove 6. In the initial state, the ratchet 13 in the driving limit assembly is The ratchet 11 is not in contact. When the I-shaped block 3 is completely inserted into the slot 5, under the action of multiple springs 8 on both sides, the two limit blocks 7 slide inward and get stuck in the grooves on both sides of the I-shaped block 3, thereby locking the I-shaped block 3 and the cylinder body 1. When disassembling, start the drive limit assembly, drive the limit assembly to drive the rack 9 to move outward, and pull the limit blocks 7 back into the slide groove 6. At this time, the two limit blocks 7 no longer constrain the I-shaped block 3, and the installer can pull the cylinder body 1 outward.

[0037] By setting a fixed seat 4, and opening a slot 5 on the upper surface of the fixed seat 4, and setting a limit block 7 in the slot 5, the limit block 7 is used to constrain and limit the I-shaped block 3, and the rack 9 is driven by setting a driving limit component, which changes the inconvenience of the traditional suspension cylinder that requires the use of tools such as a sledgehammer and a steel chisel during disassembly and installation, and requires a large force to disassemble the pin shaft, thereby reducing manpower consumption and improving installation and disassembly efficiency.

[0038] Embodiment 2:

[0039] This embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above embodiments, also has the following technical features, and the driving limit assembly includes:

[0040] Gear 10, gear 10 is located on the circumferential side of the fixed seat 4 and is meshed with the corresponding rack 9. The outer wall of the gear 10 is coaxially connected with a ratchet 11, and a pawl 13 is clamped on the ratchet 11. The circumferential side of the pawl 13 is provided with a support rod 12 fixed to the side wall of the fixed seat 4. The pawl 13 cooperates with the rotating rod of the support rod 12. A motor 16 is provided on the circumferential side of the gear 10, and the output shaft of the motor 16 is coaxially connected to the gear 10.

[0041] Among them, when disassembling the cylinder body 1, the pawl 13 is pushed to the side close to the ratchet 11, so that the pawl 13 is engaged with the ratchet 11, and then the motor 16 is started. The output shaft of the motor 16 drives the gear 10 to rotate, and the gear 10 drives the rack 9 to move outward, and the rack 9 pulls the limit block 7 to move toward the inner cavity of the slide groove 6. When the limit block 7 is completely received in the slide groove 6, the limit block 7 no longer constrains the I-shaped block 3. Under the action of the ratchet 11 and the pawl 13, the gear 10 will not rotate in the opposite direction under the action of the spring 8 in the opposite direction, thereby reducing the self-consumption of the motor 16.

[0042] By setting a driving limit assembly and using the motor 16 for driving, the inconvenience of the traditional device requiring manual disassembly is changed, and the disassembly efficiency is improved. In addition, by setting the ratchet 11 and the pawl 13, the self-consumption of the motor 16 is reduced and the service life of the motor 16 is extended.

[0043] Embodiment 3:

[0044] The present embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: a support plate 15 is fixedly connected to the side wall of the fixed seat 4 and is located directly below the motor 16, and the motor 16 is fixedly mounted on the upper surface of the support plate 15.

[0045] The support plate 15 is provided to facilitate fixing of the motor 16 .

[0046] Embodiment 4:

[0047] This embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: a support block 14 is fixedly connected to the surface wall on the same side of the support rod 12 and the pawl 13, and the upper surface of the support block 14 is adapted to the upper surface of the pawl 13.

[0048] In the initial state, the pawl 13 rotates to the upper surface of the support block 14 , and the support block 14 can effectively support the pawl 13 .

[0049] By providing the support block 14 , the pawl 13 can be effectively supported.

[0050] Embodiment 5:

[0051] The present embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: a side wall of a fixed seat 4 is fixedly connected with a shield 17 located outside the drive limit assembly, and the shield 17 is a hollow structure with an opening at the bottom, and a through hole is provided on the side wall of the shield 17 for accommodating the rack 9 to pass through.

[0052] By providing the shield 17 , during the operation of the excavator, the shield 17 can effectively block sand, gravel, and mud splashing from the external environment, thereby avoiding adverse effects on the drive limit assembly in the shield 17 .

[0053] Embodiment 6:

[0054] The present embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above-mentioned embodiments, also has the following technical features: mounting feet 18 are symmetrically fixed to the side walls of the fixing seat 4 near the bottom edge, and the mounting feet 18 are provided with evenly distributed through holes.

[0055] When installing the fixing seat 4, bolts may be passed through the through holes on the mounting legs 18 to fix the fixing seat 4 to the excavator.

[0056] By providing a plurality of mounting legs 18, it is convenient to effectively and firmly fix the fixing base 4 to the excavator.

[0057] Embodiment 7:

[0058] This embodiment provides a wheeled excavator suspension cylinder, which, in addition to the technical solutions of the above embodiments, also has the following technical features: the I-shaped block 3 is plug-fitted with the slot 5, and the limit block 7 is snap-fitted with the I-shaped block 3.

[0059] Among them, the I-shaped block 3 can be freely pulled out of or inserted into the slot 5. When the I-shaped block 3 is fully inserted into the slot 5, the limit blocks 7 on both sides of the I-shaped block 3 can be inserted into the grooves on both sides of the I-shaped block 3 under the action of the spring 8.

[0060] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A wheeled excavator suspension cylinder, characterized in that: include: An oil cylinder body (1), a fixing block (2) being welded and fixed to the bottom of the oil cylinder body (1), and an I-shaped block (3) being fixedly connected to the bottom of the fixing block (2); A fixed seat (4), the fixed seat (4) is arranged directly below the fixed block (2), the upper surface of the fixed seat (4) is provided with a slot (5) for accommodating the insertion of the I-shaped block (3), the inner walls on the left and right sides of the slot (5) are symmetrically provided with sliding grooves (6), a limit block (7) is slidably connected in the sliding groove (6), a spring (8) is arranged between the limit block (7) and the inner wall of the sliding groove (6), and the two ends of the spring (8) are respectively fixed to the side wall of the limit block (7) and the inner wall of the sliding groove (6), the side wall of the limit block (7) is fixedly connected with a rack (9) located between the two springs (8), and the other end of the rack (9) penetrates the inner wall of the sliding groove (6) and extends to the outside; Two driving limit assemblies are symmetrically arranged and respectively located on the left and right sides of the fixed seat (4), and are used to control the two racks (9) to slide inwards or outwards.

2. A wheeled excavator suspension cylinder according to claim 1, characterized in that: The drive limit assembly comprises: A gear (10), the gear (10) is located on the peripheral side of the fixed seat (4) and meshed with the corresponding rack (9), the outer side wall of the gear (10) is coaxially connected with a ratchet (11), the ratchet (11) is clamped with a pawl (13), the peripheral side of the pawl (13) is provided with a support rod (12) fixed to the side wall of the fixed seat (4), the pawl (13) cooperates with the support rod (12) rotating rod, the peripheral side of the gear (10) is provided with a motor (16), and the output shaft of the motor (16) is coaxially connected with the gear (10).

3. A wheeled excavator suspension cylinder according to claim 2, characterized in that: A support plate (15) is fixedly connected to the side wall of the fixing seat (4) and is located directly below the motor (16), and the motor (16) is fixedly mounted on the upper surface of the support plate (15).

4. A wheeled excavator suspension cylinder according to claim 2, characterized in that: A support block (14) is fixedly connected to the surface wall on the same side of the support rod (12) and the ratchet (13), and the upper surface of the support block (14) is adapted to the upper surface of the ratchet (13).

5. The wheeled excavator suspension cylinder according to claim 2, characterized in that: A shield (17) is fixedly connected to the side wall of the fixed seat (4) and is located outside the drive limit assembly. The shield (17) is a hollow structure with an open bottom. The side wall of the shield (17) is provided with a through hole that can accommodate the rack (9) to pass through.

6. The wheeled excavator suspension cylinder according to claim 1, characterized in that: The side wall of the fixing seat (4) is symmetrically fixed with mounting feet (18) near the bottom edge, and the mounting feet (18) are provided with evenly distributed through holes.

7. The wheeled excavator suspension cylinder according to claim 1, characterized in that: The I-shaped block (3) is plug-fitted with the slot (5), and the limit block (7) is snap-fitted with the I-shaped block (3).

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