A high-precision scrap car disassembling shear

Abstract

This utility model relates to a high-precision car dismantling shear for scrapped vehicles, including a connector for connection to an excavator. The connector is connected to a hollow support frame via a rotary drive device. A fixed shear arm is fixed to one end of the inner side of the support frame, and a movable shear arm is hinged to the other end via a hinge assembly. A hydraulic cylinder is provided between the movable shear arm and the support frame. The cylinder body is hinged to the upper end of the support frame, and the piston rod is hinged to the outer side of the movable shear arm to drive the movable shear arm to rotate relative to the fixed shear arm to achieve the shearing action. Both the fixed and movable shear arms have shear blades at their shearing ends, and the shear blades are made of high-strength alloy wear-resistant material. This utility model has high shearing force, high operational flexibility, high shearing precision, and good reliability and durability.

Description

Technical Field

[0001] This utility model relates to the technical field of end-of-life vehicle dismantling equipment, specifically to a high-efficiency end-of-life vehicle dismantling shear. Background Technology

[0002] With the continuous growth of car ownership, the recycling and dismantling of end-of-life vehicles has become an important industry. Traditional end-of-life vehicle dismantling methods mostly use manual gas cutting, crushing machines, or simple hydraulic shears, which have problems such as low efficiency, poor safety, low dismantling accuracy (difficult to achieve classified cutting of vehicle parts), and low resource recycling rate.

[0003] While existing hydraulic shears for excavators can provide significant shearing force, they typically suffer from the following drawbacks: 1) The shear arm can usually only perform opening and closing movements, limiting the working range and requiring frequent adjustments to the excavator's posture, resulting in low efficiency; 2) The simple articulated structure is prone to swaying and wear under high-intensity impact loads, leading to inaccurate alignment of the two shear blades, reduced shearing accuracy, and even jamming; 3) The lack of an effective clamping structure allows workpieces to easily shift during shearing, affecting shearing performance and safety; 4) Lubrication and maintenance are inconvenient, and long-term use exacerbates wear at the articulated joints, impacting the equipment's lifespan.

[0004] Therefore, there is an urgent need for a car dismantling shear attachment that combines high shearing force, high operational flexibility, high shearing accuracy, good reliability, and durability. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-precision car dismantling shear for scrapped vehicles, aiming to solve problems such as limited operating range, low cutting accuracy, easy wear and tear, and inconvenient maintenance of existing car dismantling shears.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A high-precision car dismantling shear for scrapped vehicles includes a connector for connection to an excavator. The connector is connected to a hollow support frame via a rotary drive device. A fixed shear arm is fixed to one end of the inner side of the support frame, and a movable shear arm is hinged to the other end via a hinge assembly. A hydraulic cylinder is provided between the movable shear arm and the support frame. The cylinder body is hinged to the upper end of the support frame, and the piston rod is hinged to the outer side of the movable shear arm to drive the movable shear arm to rotate relative to the fixed shear arm to achieve the shearing action. Both the fixed and movable shear arms have shear blades at their shearing ends, and the shear blades are made of high-strength alloy wear-resistant material.

[0007] Furthermore, the hinge assembly includes a left pressure sleeve and a right pressure sleeve respectively fixed on both sides of the support frame. The left pressure sleeve and the right pressure sleeve limit the movement of the movable scissor arm from both sides. A screw is passed through the left pressure sleeve, the movable scissor arm and the right pressure sleeve along the axis. The screw is fastened by a nut, and a stop groove adapted to the head of the screw is opened on the outer wall of the left pressure sleeve. The nut is also fixedly connected to the right pressure sleeve by a bolt to prevent the nut from loosening.

[0008] Furthermore, adjusting shims are provided on the connecting surfaces of the left pressure sleeve and the support frame, and the connecting surfaces of the right pressure sleeve and the support frame. By increasing or decreasing the number of adjusting shims, the tightness of the hinge of the movable scissor arm can be adjusted to prevent the movable scissor arm from shaking or getting stuck.

[0009] Furthermore, thickened blocks are welded to both ends of the movable shear arm to enhance the structural strength of the end of the movable shear arm; a spacer is fitted at the mating point between the movable shear arm and the screw to separate the movable shear arm and the screw and reduce wear.

[0010] Furthermore, both the fixed and movable shear arms are provided with clamping teeth at their lower ends, and the clamping teeth are evenly distributed along the length of the shear arm; a clamping groove is provided above the clamping teeth.

[0011] Furthermore, the rotary drive device includes an outer disk fixed to the lower end of the connector, an inner gear ring rotatably connected to the inner side of the outer disk, and a rotary support ring provided at the mating gap between the inner gear ring and the outer disk to reduce rotational wear between the two; the inner gear ring is fixedly connected to the support frame, and a hydraulic motor is fixed inside the connector, the output gear of the hydraulic motor meshes with the inner gear ring to drive the inner gear ring to rotate the support frame.

[0012] Furthermore, a hydraulic rotary joint is provided between the connector and the support frame. The oil inlet and return lines of the oil cylinder and the oil inlet and return lines of the hydraulic motor are connected to the hydraulic circuit of the excavator through the hydraulic rotary joint to achieve stable delivery of hydraulic oil.

[0013] Furthermore, the screw is provided with an oil injection hole, which is used to lubricate the spacer.

[0014] This utility model has the following beneficial effects: 1. This utility model has a wide operating range and high flexibility: by driving the internal gear ring to rotate through the hydraulic motor, the entire shearing mechanism can achieve 360° continuous rotation, so that the operator can easily align the part to be sheared in different directions without frequently adjusting the excavator boom, which greatly improves the efficiency and flexibility of dismantling operations.

[0015] 2. This utility model features high shearing precision and accurate alignment: The unique hinge assembly design (left / right pressure sleeves, adjusting shims, spacers) ensures stable and wobbly rotation of the movable shear arm. The hinge gap can be precisely adjusted by adding or removing shims, effectively preventing blade misalignment due to wear and ensuring precise closure of both blades during each cut, thus improving the quality of the sheared section and disassembly accuracy.

[0016] 3. This utility model provides stable clamping and powerful shearing: The clamping teeth and clamping grooves at the lower ends of the fixed and movable shear arms can pre-grip and fix the frame or beams of the scrapped car before shearing, preventing them from slipping, making the shearing process more stable and efficient, and also improving operational safety.

[0017] 4. This utility model has a robust structure and is wear-resistant and durable: the shear blade is made of high-strength alloy wear-resistant material, the key hinge parts are equipped with thickened blocks and spacers, and the rotating parts are equipped with slewing bearing rings. All of these greatly improve the overall rigidity and wear resistance of the equipment and extend its service life.

[0018] 5. This utility model is easy to maintain and highly reliable: the oil injection hole inside the screw allows operators to periodically add grease to the hinge spacer, reducing wear and maintaining the flexibility and precision of the hinge. The nut is fixed with bolts to prevent loosening, and the hydraulic circuit is connected with a rotary joint to avoid pipe entanglement, improving the reliability and stability of the equipment under long-term high-intensity vibration conditions. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional structural diagram of the present invention; Figure 3 This is a cross-sectional structural schematic diagram of the rotary drive device of this utility model; Figure 4 This is a cross-sectional view of the hinge assembly of this utility model; Figure 5 This is a schematic diagram of the movable scissor arm of this utility model.

[0020] The reference numerals in the figure are as follows: 1. Connector; 2. Support frame; 3. Fixed shear arm; 4. Movable shear arm; 5. Hydraulic cylinder; 6. Shear blade; 7. Left pressure sleeve; 8. Right pressure sleeve; 9. Screw; 10. Nut; 11. Stop groove; 12. Adjusting shim; 13. Thickened block; 14. Spacer; 15. Clamping teeth; 16. Clamping groove; 17. Outer disc; 18. Internal gear ring; 19. Slewing bearing ring; 20. Hydraulic motor; 21. Hydraulic rotary joint; 22. Oil injection hole. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-5 This utility model provides a technical solution: A high-precision scrap car dismantling shear includes a connector 1 for quick connection to the end of an excavator's boom, thereby mounting the entire shear onto the excavator. The connector 1 is connected to a hollow support frame 2 via a rotary drive device. The rotary drive device includes an outer disc 17 bolted to the bottom of the connector 1, and an inner gear ring 18 rotatably connected to a rotating support ring 19 (such as a ball bearing or a circular ring). The lower part of the inner gear ring 18 is bolted to the hollow support frame 2. A hydraulic motor 20 is installed inside the connector 1, and the output gear of the hydraulic motor 20 extends into and meshes with the inner gear ring 18. When the hydraulic oil of the excavator drives the hydraulic motor 20, it can drive the inner gear ring 18 and the entire support frame 2 to rotate continuously 360° relative to the connector 1 and the outer disc 17, greatly expanding the working range. The hollow support frame 2 forms the main frame of the equipment. A fixed shear arm 3 is fixed to one end of the inner side of the support frame 2, and a movable shear arm 4 is hinged to the other end through a hinge assembly. A hydraulic cylinder 5 is provided between the movable shear arm 4 and the support frame 2. The cylinder body of the hydraulic cylinder 5 is hinged to the upper end of the support frame 2, and the piston rod is hinged to the outside of the movable shear arm 4 to drive the movable shear arm 4 to rotate relative to the fixed shear arm 3 to achieve the shearing action. Both the fixed shear arm 3 and the movable shear arm 4 are provided with shear blades 6 at their shearing ends. The shear blades 6 are made of high-strength alloy wear-resistant material. The material of the shear blades 6 is Cr12MoV, with a thickness of 15mm and a hardness of HRC58-62. The lower ends of both the fixed shear arm 3 and the movable shear arm 4 are provided with clamping teeth 15, which are evenly distributed along the length of the shear arm. A clamping groove 16 is provided above the clamping teeth 15.

[0023] The hinge assembly includes a left pressure sleeve 7 and a right pressure sleeve 8, which are fixed to both sides of the support frame 2 by bolts. The left pressure sleeve 7 and the right pressure sleeve 8 limit the movement of the movable shear arm 4 from both sides. The left pressure sleeve 7, the movable shear arm 4, and the right pressure sleeve 8 are provided with a screw 9 along the axis. The screw 9 is fastened by a nut 10. The outer wall of the left pressure sleeve 7 is provided with a stop groove 11 that matches the head of the screw 9. The nut 10 is also fixedly connected to the right pressure sleeve 8 by bolts to prevent the nut 10 from loosening. The mounting surfaces of the left pressure sleeve 7 and the support frame 2, and the right pressure sleeve 8 and the support frame 2 are each equipped with a number of adjusting shims 12. When the hinge part develops wear gaps due to long-term use, the assembly can be re-tightened by reducing the number of adjusting shims 12 to eliminate shaking and restore shearing accuracy.

[0024] Both ends of the movable shear arm 4 are welded with thickened blocks 13 to enhance the structural strength of the end of the movable shear arm 4; a spacer 14 is fitted at the joint between the movable shear arm 4 and the screw 9 to separate the movable shear arm 4 and the screw 9 and reduce wear.

[0025] The pressurized oil supplied by the excavator's hydraulic system enters through the upper part of the hydraulic rotary joint 21. The lower part of the hydraulic rotary joint 21 is fixed to the support frame 2 and rotates with it. After passing through the rotary joint 21, the pressurized oil is divided into two paths: one path leads to the drive cylinder 5, controlling its extension and retraction; the other path leads to the hydraulic motor 20, controlling its forward and reverse rotation. The return oil returns along the same path. The hydraulic rotary joint 21 ensures reliable transmission of hydraulic oil between the stationary connector 1 and the rotating support frame 2.

[0026] The screw 9 has an oil injection hole 22 machined along its axis inside. Lubricating grease can be added to the inside of the spacer 14 through this hole using an oil gun to reduce wear and extend its service life.

[0027] In the description of the utility model, it should be understood that the terms "front end", "rear end", "upper part", "lower part", "inner part", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0028] In utility models, unless otherwise explicitly specified and limited, the terms "installation," "setting," "connection," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in the utility model according to the specific circumstances.

[0029] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A high-precision scrap car disassembling shear comprising a connector (1) for connection with an excavator, characterized in that, The connector (1) is connected to a hollow support frame (2) via a rotary drive device; a fixed shear arm (3) is fixed at one end of the inner side of the support frame (2), and a movable shear arm (4) is hinged at the other end via a hinge assembly. A hydraulic cylinder (5) is provided between the movable shear arm (4) and the support frame (2). The cylinder body of the hydraulic cylinder (5) is hinged to the upper end of the support frame (2), and the piston rod is hinged to the outside of the movable shear arm (4) to drive the movable shear arm (4) to rotate relative to the fixed shear arm (3) to achieve the shearing action; both the fixed shear arm (3) and the movable shear arm (4) are provided with shear blades (6), which are made of high-strength alloy wear-resistant material.

2. A high-precision scrap car dismounting shear according to claim 1, characterized in that: The hinge assembly includes a left pressure sleeve (7) and a right pressure sleeve (8) fixed on both sides of the support frame (2). The left pressure sleeve (7) and the right pressure sleeve (8) limit the movement of the movable shear arm (4) from both sides. The left pressure sleeve (7), the movable shear arm (4) and the right pressure sleeve (8) are provided with a screw (9) along the axis. The screw (9) is fastened by a nut (10). The outer wall of the left pressure sleeve (7) is provided with a stop groove (11) that matches the head of the screw (9). The nut (10) is also fixedly connected to the right pressure sleeve (8) by a bolt to prevent the nut (10) from loosening.

3. A high-precision scrap car dismounting shear according to claim 2, characterized in that: The connecting surfaces of the left pressure sleeve (7) and the support frame (2) and the right pressure sleeve (8) and the support frame (2) are both provided with adjusting shims (12). By increasing or decreasing the number of adjusting shims (12), the tightness of the hinge of the movable scissor arm (4) can be adjusted to avoid the movable scissor arm (4) from shaking or getting stuck.

4. A high-precision scrap vehicle dismounting shear as claimed in claim 3, characterized in that: Both ends of the movable shear arm (4) are welded with thickened blocks (13) to enhance the structural strength of the end of the movable shear arm (4); a spacer (14) is provided at the joint between the movable shear arm (4) and the screw (9) to separate the movable shear arm (4) and the screw (9) and reduce wear.

5. A high-precision scrap vehicle disassembling shear according to claim 4, characterized in that: Both the fixed shear arm (3) and the movable shear arm (4) are provided with clamping teeth (15) at their lower ends. The clamping teeth (15) are evenly distributed along the length of the shear arm. A clamping groove (16) is provided above the clamping teeth (15).

6. A high-precision scrap vehicle dismantling shear as claimed in claim 5, characterized in that: The rotary drive device includes an outer disk (17) fixed at the lower end of the connector (1). An inner gear ring (18) is rotatably connected to the inner side of the outer disk (17). A rotary support ring (19) is provided at the mating gap between the inner gear ring (18) and the outer disk (17) to reduce the rotational wear of both. The inner gear ring (18) is fixedly connected to the support frame (2). A hydraulic motor (20) is fixed inside the connector (1). The output gear of the hydraulic motor (20) meshes with the inner gear ring (18) to drive the inner gear ring (18) to rotate the support frame (2).

7. A high-precision scrap vehicle dismantling shear as claimed in claim 6, characterized in that: A hydraulic rotary joint (21) is provided between the connector (1) and the support frame (2). The oil inlet and return oil circuits of the oil cylinder (5) and the oil inlet and return oil circuits of the hydraulic motor (20) are connected to the hydraulic circuit of the excavator through the hydraulic rotary joint (21) to achieve stable delivery of hydraulic oil.

8. A high-precision scrap vehicle dismounting shear as claimed in claim 7, characterized in that: The screw rod (9) is provided with an oil injection hole (22) for injecting oil to lubricate the spacer sleeve (14).

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