Parking braking structure of wheel excavator

Abstract

The utility model relates to the technical field of excavators, and discloses a wheel type excavator parking braking structure which comprises an excavator chassis and a connecting block, the connecting block is fixedly connected to the outer side of the upper surface of the excavator chassis, a supporting rod is movably connected to the outer side face of the connecting block in an inserted mode, and the supporting rod penetrates through the outer side face of the excavator chassis. The top end of the supporting rod is fixedly connected with a limiting block. According to the parking braking structure of the wheel excavator, supporting rods are controlled to drive bases to move downwards along the interiors of connecting blocks till the lower surfaces of the bases are tightly attached to the ground, then limiting rods are controlled to be inserted into first limiting holes, the limiting rods can be fixed, and the contact area between the parking braking structure and the ground is increased through the four bases; the friction force between the device and the ground contact surface is increased, the function of assisting in parking braking when a braking structure fails is achieved, practicability is good, and use of workers is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of excavators, in particular to a parking brake structure for a wheeled excavator. Background Art

[0002] After searching, Chinese Patent No. 202123402417.5 discloses a wheeled excavator braking structure. The device cooperates with each other between multiple groups of structures, so that the brake shoe of the device is connected to the fixed seat mounted on the half-axle sleeve through a pin shaft. A part of the fixed seat passes through the brake base plate and extends out of the brake drum. The camshaft is mounted on the fixed seat, and the other end of the camshaft with an external spline extends out of a part of the fixed seat and is connected to the brake cylinder through the brake arm. The brake cylinder is connected to the fixed seat extending out of the brake drum through a bracket, so that the two ends of the pin shaft are respectively fixed on the fixed seat, thereby achieving the purpose of not being easy to deform, better braking effect, and effectively eliminating safety hazards.

[0003] Under the existing technology, some wheeled excavators are only parked by a braking structure, which is not easy to achieve the function of auxiliary parking braking when the braking structure fails. The structure is relatively simple, the practicality is poor, and it is inconvenient for workers to use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a parking brake structure for a wheeled excavator, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a parking brake structure of a wheeled excavator, comprising an excavator chassis and a connecting block, the outer side of the upper surface of the excavator chassis is fixedly connected to the connecting block, the outer side surface of the connecting block is movably connected with a support rod, the support rod passes through the outer side surface of the excavator chassis, the top of the support rod is fixedly connected to the limiting block, the bottom end of the support rod is fixedly connected to the base, the top of the outer side surface of the support rod is provided with a first limiting hole, the middle part of the outer side surface of the support rod is provided with a second limiting hole, the inner wall of the connecting block is movably connected with the limiting rod, the limiting rod is movably connected with the second limiting hole, the inner side surface of the limiting rod is fixedly connected with a moving block, the outer side surface of the moving block is fixedly connected with a transmission rod, the outer end of the transmission rod is fixedly connected with a hand-held rod, the inner side surface of the moving block is fixedly connected with a first short rod, the inner wall of the connecting block is fixedly connected with the second short rod, and the outer surfaces of the first short rod and the second short rod are sleeved with a return spring.

[0006] Preferably, a through groove is provided on the outer side of the outer side of the connecting block, and the inner diameter of the through groove is matched with the outer diameter of the transmission rod.

[0007] Preferably, a triangular plate is fixedly connected to the inner side surface of the connecting block, and the lower surface of the triangular plate is fixedly connected to the upper surface of the excavator chassis.

[0008] Preferably, a moving groove is provided inside the connecting block, and the inner diameter of the moving groove is matched with the outer diameter of the moving block.

[0009] Preferably, a connecting frame is fixedly sleeved on the bottom of the outer side surface of the support rod, and the lower surface of the connecting frame is fixedly connected to the upper surface of the base.

[0010] Preferably, the number of the return springs is set to four groups, and the material of the four groups of return springs is all set to silicon manganese spring steel.

[0011] Compared with the prior art, the utility model provides a parking brake structure for a wheeled excavator, which has the following beneficial effects:

[0012] 1. The parking brake structure of the wheeled excavator drives the base to move downward along the inside of the connecting block by controlling the support rod until the lower surface of the base is close to the ground, and then controls the limit rod to be inserted into the inside of the first limit hole to fix it, so that the four groups of bases increase the contact area between the device and the ground, increase the friction between the device and the contact surface of the ground, and realize the function of auxiliary parking braking when the braking structure fails. It has good practicality and is convenient for staff to use.

[0013] 2. The parking brake structure of the wheeled excavator continuously squeezes the moving block outward through the reaction force generated by the extrusion of the return spring, so that the moving block drives the limiting rod to move outward along the inside of the connecting block until the limiting rod passes through the inner wall of the connecting block and is finally firmly inserted into the inside of the first limiting hole, which effectively improves the fixing effect between the connecting block and the support rod, and indirectly ensures the stability of the base when it is in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the local structure of the utility model;

[0016] Figure 3 It is a schematic diagram of the partial structure decomposition of the utility model.

[0017] In the figure: 1. excavator chassis; 2. connecting block; 3. support rod; 4. limit block; 5. base; 6. first limit hole; 7. second limit hole; 8. limit rod; 9. moving block; 10. transmission rod; 11. hand-held rod; 12. first short rod; 13. second short rod; 14. return spring. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-3 The utility model provides a technical solution: a parking brake structure of a wheeled excavator, including an excavator chassis 1 and a connecting block 2. The outer side of the upper surface of the excavator chassis 1 is fixedly connected to the connecting block 2, and the outer side surface of the connecting block 2 is movably connected with a support rod 3. By controlling the support rod 3 to drive the base 5 to move downward along the inside of the connecting block 2 until the lower surface of the base 5 is close to the ground, and then controlling the limiting rod 8 to insert into the inside of the first limiting hole 6, it can be fixed, so that the four groups of bases 5 increase the contact area between the device and the ground, and increase the friction between the device and the ground contact surface, so as to realize the function of auxiliary parking brake when the braking structure fails, which has good practicality and is convenient for the use of the staff. The support rod 3 runs through the outer side surface of the excavator chassis 1, the top end of the support rod 3 is fixedly connected to the limiting block 4, and the bottom end of the support rod 3 is fixedly connected to the base 5. The top of the outer side surface of the support rod 3 is provided with a first limiting hole 6. A second limiting hole 7 is provided in the middle of the outer side surface of the rod 3, and a limiting rod 8 is movably inserted into the inner wall of the connecting block 2, and the limiting rod 8 is movably inserted into the second limiting hole 7, and the inner side surface of the limiting rod 8 is fixedly connected to a moving block 9, and the outer side surface of the moving block 9 is fixedly connected to a transmission rod 10, and the outer end of the transmission rod 10 is fixedly connected to a hand-held rod 11, and the inner side surface of the moving block 9 is fixedly connected to a first short rod 12, and the inner wall of the connecting block 2 is fixedly connected to a second short rod 13, and the outer surfaces of the first short rod 12 and the second short rod 13 are sleeved with a return spring 14. The reaction force generated by the extrusion of the return spring 14 can continuously squeeze the moving block 9 outward, so that the moving block 9 drives the limiting rod 8 to move outward along the inside of the connecting block 2 until the limiting rod 8 passes through the inner wall of the connecting block 2 and is finally firmly inserted into the inside of the first limiting hole 6, which effectively improves the fixing effect between the connecting block 2 and the support rod 3, and indirectly ensures the stability of the base 5 when it is in use.

[0020] In order to facilitate the staff to control the hand-held rod 11 to drive the transmission rod 10 to move along the inside of the connecting block 2, the utility model provides a through groove on the outside of the outer side of the connecting block 2, and the inner diameter of the through groove is adapted to the outer diameter of the transmission rod 10, which facilitates the staff to control the hand-held rod 11 to drive the transmission rod 10 to move along the inside of the connecting block 2.

[0021] In order to improve the stability of the connection between the connecting block 2 and the excavator chassis 1, the utility model has a triangular plate fixedly connected to the inner side surface of the connecting block 2, and the lower surface of the triangular plate is fixedly connected to the upper surface of the excavator chassis 1. The triangular plate increases the connection area between the connecting block 2 and the excavator chassis 1, and improves the stability of the connection between the connecting block 2 and the excavator chassis 1.

[0022] In order to facilitate the movement of the moving block 9 along the inside of the connecting block 2, the utility model provides a moving groove inside the connecting block 2, the inner diameter of the moving groove is adapted to the outer diameter of the moving block 9, and the moving block 9 is convenient to move along the inside of the connecting block 2.

[0023] In order to improve the stability of the connection between the support rod 3 and the base 5, the utility model has a connecting frame fixedly sleeved on the bottom of the outer side of the support rod 3, and the lower surface of the connecting frame is fixedly connected to the upper surface of the base 5. The connecting frame increases the connection area between the support rod 3 and the base 5, and improves the stability of the connection between the support rod 3 and the base 5.

[0024] In order to extend the service life of the four groups of return springs 14, the utility model sets the number of return springs 14 to four groups, and the manufacturing material of the four groups of return springs 14 is set to silicon manganese spring steel, and the manufacturing material of the silicon manganese spring steel is set to silicon manganese spring steel.

[0025] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0026] When in use, the staff controls the hand-held rod 11 to drive the transmission rod 10, the moving block 9 and the limiting rod 8 to move inward along the interior of the connecting block 2, and at the same time, the moving block 9 drives the first short rod 12 to squeeze the return spring 14 inward until the limiting rod 8 is moved out of the second limiting hole 7, thereby releasing the fixation between the connecting block 2 and the support rod 3. Then, the support rod 3 is controlled to drive the base 5 to move downward along the interior of the connecting block 2 and the excavator chassis 1 until the lower surface of the base 5 is close to the ground. At the same time, the support rod 3 drives the first limiting hole 6 to move to a position horizontal with the limiting rod 8. Then, the control of the hand-held rod 11 is released. At the same time, the reaction force generated by the extrusion of the return spring 14 can drive the moving block 9 and the limiting rod 8 to move outward along the interior of the connecting block 2 until the limiting rod 8 is inserted into the first limiting hole 6, so that the connecting block 2 and the support rod 3 can be fixed again. At this point, the four groups of bases 5 support the device and complete the parking brake of the device.

[0027] To sum up, the parking brake structure of the wheeled excavator drives the base 5 to move downward along the inside of the connecting block 2 by controlling the support rod 3 until the lower surface of the base 5 is close to the ground, and then controls the limit rod 8 to be inserted into the inside of the first limit hole 6 to fix it, so that the four groups of bases 5 increase the contact area between the device and the ground, increase the friction between the device and the contact surface of the ground, and realize the function of auxiliary parking braking when the braking structure fails. It has good practicality and is convenient for staff to use.

[0028] The parking brake structure of the wheeled excavator continuously squeezes the moving block 9 outward through the reaction force generated by the extrusion of the return spring 14, so that the moving block 9 drives the limiting rod 8 to move outward along the inside of the connecting block 2 until the limiting rod 8 passes through the inner wall of the connecting block 2 and is finally firmly inserted into the inside of the first limiting hole 6, effectively improving the fixing effect between the connecting block 2 and the support rod 3, and indirectly ensuring the stability of the base 5 when it is in use.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A parking brake structure for a wheeled excavator, comprising an excavator chassis (1) and a connecting block (2), characterized in that: The outer side of the upper surface of the excavator chassis (1) is fixedly connected to a connecting block (2); the outer side surface of the connecting block (2) is movably plugged with a support rod (3); the support rod (3) passes through the outer side surface of the excavator chassis (1); the top end of the support rod (3) is fixedly connected to a limiting block (4); the bottom end of the support rod (3) is fixedly connected to a base (5); the top of the outer side surface of the support rod (3) is provided with a first limiting hole (6); the middle of the outer side surface of the support rod (3) is provided with a second limiting hole (7); the inner wall of the connecting block (2) is movably plugged with a A limit rod (8), the limit rod (8) being movably plugged into the second limit hole (7), the inner side surface of the limit rod (8) being fixedly connected to a moving block (9), the outer side surface of the moving block (9) being fixedly connected to a transmission rod (10), the outer end of the transmission rod (10) being fixedly connected to a hand-held rod (11), the inner side surface of the moving block (9) being fixedly connected to a first short rod (12), the inner wall of the connecting block (2) being fixedly connected to a second short rod (13), and the outer surfaces of the first short rod (12) and the second short rod (13) being sleeved with a return spring (14).

2. A wheeled excavator parking brake structure according to claim 1, characterized in that: A through slot is provided on the outer side of the outer side of the connecting block (2), and the inner diameter of the through slot is matched to the outer diameter of the transmission rod (10).

3. The parking brake structure of a wheeled excavator according to claim 1, characterized in that: The inner side surface of the connection block (2) is fixedly connected to a triangular plate, and the lower surface of the triangular plate is fixedly connected to the upper surface of the excavator chassis (1).

4. The parking brake structure of a wheeled excavator according to claim 1, characterized in that: A moving groove is provided inside the connecting block (2), and the inner diameter of the moving groove is matched to the outer diameter of the moving block (9).

5. The parking brake structure of a wheeled excavator according to claim 1, characterized in that: A connecting frame is fixedly sleeved on the bottom of the outer side surface of the support rod (3), and the lower surface of the connecting frame is fixedly connected to the upper surface of the base (5).

6. The parking brake structure of a wheeled excavator according to claim 1, characterized in that: The number of the return springs (14) is set to four groups, and the manufacturing material of the four groups of return springs (14) is all set to be silicon manganese spring steel.

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