A mine car frame jacking device

Abstract

The utility model relates to mine machinery technical field, concretely relates to a mine car frame jacking device. The utility model provides a mine car frame jacking device, including base box and with the jacking box of base box top sliding connection, the inside of base box is equipped with the jacking cylinder for driving jacking box and does up and down motion, and jacking cylinder is connected with the hydraulic pump station outside, the bottom four corners of jacking box are equipped with universal swivel caster, and the top of jacking box is detachably connected with the profiled tool of the replaceability according to the working condition, a plurality of corresponding positioning holes are set up on base box and jacking box, and safety pin is inserted in the positioning hole. The utility model passes through the modularization design and hydraulic control technology, effectively solved the cost, flexibility and precision problem in the jacking operation of large tonnage mine car frame, has remarkable engineering application value.

Description

Technical Field

[0001] This utility model relates to the field of mining machinery technology, specifically to a mining car frame lifting device. Background Technology

[0002] As the core load-bearing structure of electric wheel mine cars, the assembly precision and maintenance quality of the mine car frame directly affect the operational stability and service life of the mine car. In large open-pit mines, as mine cars develop towards larger tonnage and larger size (significantly increasing the weight of a single frame and components), traditional frame assembly and maintenance operations rely on heavy-duty overhead cranes and heavy-duty ground drag chains in workshops.

[0003] However, such modification schemes have significant drawbacks: First, the installation cost of large-tonnage overhead cranes is high, they occupy a large area and have fixed locations, making it difficult to adapt to the flexible operation needs of multiple areas and multiple vehicle types; second, the laying of heavy-duty ground chain is complex, and subsequent maintenance is difficult; third, the lifting height error of the overhead crane is relatively large (usually ±5~10mm), which cannot meet the height requirements of precision assembly or high-precision maintenance. To address these issues, there is an urgent need for a mine car frame lifting device that is low in investment cost, occupies little space, is flexible in movement, and has precise height control, in order to optimize the assembly and maintenance process. Utility Model Content

[0004] This utility model provides a mine car frame lifting device, which aims to solve the problems of high cost, poor flexibility and large height error in traditional large-tonnage mine car frame lifting operations.

[0005] The technical solution provided by this utility model is a mine car frame lifting device, including a base box and a lifting box slidably connected to the top of the base box; the base box is provided with a lifting cylinder for driving the lifting box to move up and down, and the lifting cylinder is connected to an external hydraulic pump station.

[0006] The bottom four corners of the lifting box are equipped with universal casters, and the top of the lifting box is detachably connected to conformal tooling that can be replaced according to the working conditions.

[0007] The base box and the lifting box are provided with multiple corresponding positioning holes, and safety pins are inserted into the positioning holes.

[0008] As a preferred technical solution of this utility model, the bottom of the base box is provided with a cross-shaped support base plate for increasing the grounding area.

[0009] As a preferred technical solution of this utility model, a vertical reinforcing plate for guiding and increasing strength is provided between the base box and the cross-shaped support base plate, and the lifting box is provided with a corresponding movable groove at the vertical reinforcing plate.

[0010] As a preferred technical solution of this utility model, the universal caster is located at the bottom of the base box and in contact with the ground when the lifting cylinder is fully retracted.

[0011] As a preferred embodiment of this utility model, the lifting cylinder is a double-acting cylinder. The lifting and lowering of the lifting cylinder are controlled by a solenoid valve, and hydraulic locks are installed at both the inlet and outlet of the lifting cylinder to ensure that the lifting cylinder can be stably maintained in any position.

[0012] As a preferred technical solution of this utility model, the positioning holes on the base box are equidistantly arranged, and the bottom of the lifting box is provided with a corresponding semi-circular groove at the positioning hole.

[0013] As a preferred technical solution of this utility model, the two sides of the lifting box are provided with U-shaped card seats for placing safety pins during storage.

[0014] As a preferred embodiment of this invention, the bottom side of the lifting box is provided with multiple adjusting bolts that pass through the lifting box and abut against the side wall of the inner base box. A locking nut is provided between the adjusting bolts and the lifting box. When the base box and the lifting box move relative to each other, the adjusting bolts provide guiding and supporting functions.

[0015] As a preferred technical solution of this utility model, the bottom side of the base box is provided with a cable hole for connecting the lifting cylinder and the hydraulic pump station through a hydraulic hose.

[0016] The advantages of this utility model compared with the prior art are as follows:

[0017] 1. High flexibility: When the lifting cylinder retracts, the swivel casters touch the ground, allowing the device to move freely without the need for a fixed site, adapting to the needs of multi-area operations;

[0018] 2. Cost and space optimization: The hydraulic pump station is used for centralized oil supply, and multiple units share the power source, avoiding the duplication of large-tonnage overhead cranes and ground drag chains, thus reducing initial investment and space occupation.

[0019] 3. Precise height control: The double-acting hydraulic cylinder, in conjunction with the hydraulic lock, can control the lifting height error within ±1mm, meeting the requirements of precision assembly and maintenance;

[0020] 4. High versatility: The top of the lifting box is equipped with replaceable conformal tooling to adapt to different vehicle frames, expanding the applicability of the lifting device;

[0021] 5. High safety: The positioning hole and safety pin provide double locking, the U-shaped card seat prevents the safety pin from falling off accidentally, and the adjusting bolt and locking nut ensure guiding stability. Attached Figure Description

[0022] Figure 1 This is a structural diagram of the retracted state of a mining car frame lifting device according to this utility model.

[0023] Figure 2 This is a side view of the retracted state of a mining car frame lifting device according to this utility model.

[0024] Figure 3 This is a cross-sectional view of the retracted state (AA) of the mine car frame lifting device of this utility model.

[0025] Figure 4 This is a structural diagram of the lifting device for a mine car frame of this utility model in its raised state.

[0026] Figure 5 This is a structural diagram of section AA of a mine car frame lifting device in its raised state, according to this utility model.

[0027] Figure 6 This is a schematic diagram of the overall use of a mining car frame lifting device according to the present invention.

[0028] As shown in the figure:

[0029] 1. Base box; 2. Lifting box; 3. Lifting cylinder; 4. Hydraulic pump station; 5. Universal casters; 6. Conformal tooling; 7. Positioning hole; 8. Safety pin; 9. Cross-shaped support base plate; 10. Vertical reinforcing plate; 11. Movable groove; 12. Semi-circular slot; 13. U-shaped bracket; 14. Adjusting bolt; 15. Locking nut; 16. Cable threading port. Detailed Implementation

[0030] 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.

[0031] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] Example 1:

[0033] As per the instruction manual Figure 1-6 As shown, a mine car frame lifting device includes a base box 1 and a lifting box 2 slidably connected to the top of the base box 1. The base box 1 is equipped with a lifting cylinder 3 for driving the lifting box 2 to move up and down. The lifting cylinder 3 is a double-acting cylinder. The lifting and lowering of the lifting cylinder 3 is controlled by a solenoid valve, and hydraulic locks are installed at both the inlet and outlet of the lifting cylinder 3 to ensure that the lifting cylinder 3 can be stably maintained in any position. At the same time, the lifting cylinder 3 is connected to an external hydraulic pump station 4. A cable hole 16 is provided on one side of the bottom of the base box 1 for connecting the lifting cylinder 3 and the hydraulic pump station 4 through a hydraulic hose.

[0034] In this utility model, the bottom of the base box 1 is provided with a cross-shaped support base plate 9 for increasing the grounding area, and a vertical reinforcing plate 10 for guiding and increasing strength is provided between the base box 1 and the cross-shaped support base plate 9, and the lifting box 2 is provided with a corresponding movable groove 11 at the vertical reinforcing plate 10.

[0035] In this utility model, the bottom four corners of the lifting box 2 are provided with universal casters 5. When the lifting cylinder 3 is fully retracted, the universal casters 5 are located at the bottom of the base box 1 and in contact with the ground. The top of the lifting box 2 is detachably connected to a conformal fixture 6 that can be replaced according to the working conditions. The conformal fixture 6 is inserted into the top of the lifting box 2 by bolts and then fixed by bolts.

[0036] In this utility model, the base box 1 and the lifting box 2 are provided with a plurality of corresponding positioning holes 7. The positioning holes 7 on the base box 1 are equidistantly arranged, and the bottom of the lifting box 2 is provided with a corresponding semi-circular slot 12 at the positioning hole 7, which abuts against the upper end face of the safety pin 8. The safety pin 8 is inserted into the positioning hole 7. The two sides of the lifting box 2 are provided with U-shaped slots 13 for placing the safety pin 8 when storing.

[0037] In this utility model, the bottom side of the lifting box 2 is provided with a plurality of adjusting bolts 14 that pass through the lifting box 2 and abut against the side wall of the inner base box 1. A locking nut 15 is provided between the adjusting bolts 14 and the lifting box 2. When the base box 1 and the lifting box 2 move relative to each other, the adjusting bolts 14 have a guiding and supporting function.

[0038] Workflow

[0039] 1. Moving stage: Control the lifting cylinder 3 to fully retract (stroke 0mm). At this time, the swivel caster 5 touches the ground, the base box 1 is lifted off the ground, and the device moves to the designated position under the frame via the caster.

[0040] 2. Lifting stage: Start the hydraulic pump station 4, and the solenoid valve controls the lifting cylinder 3 to extend (the stroke is adjusted as needed). The lifting box 2 drives the conformal tooling 6 to move upward until the lifting frame reaches the target height.

[0041] 3. Locking stage: After reaching the target height, the hydraulic lock automatically locks the oil cylinder inlet and outlet ports to maintain the lifting state; at the same time, the safety pin 8 is inserted into the corresponding positioning hole 7 of the base box 1 and the lifting box 2 (the safety pin 8 in the U-shaped card holder 13 must be removed before insertion and inserted and stored after use) to achieve double locking.

[0042] 4. Adjustment stage: If fine adjustment of height is required, the hydraulic pump station 4 is operated by wireless remote control, and the solenoid valve controls the lifting cylinder 3 to extend and retract slightly (accuracy ±1mm), and the hydraulic lock synchronously maintains the position stability.

[0043] 5. Maintenance phase: After the operation is completed, pull out the safety pin 8, control the lifting cylinder 3 to retract, the universal caster 5 touches the ground, and the device moves to the next work station; if it is necessary to adapt to different vehicle models, loosen the fixing bolts on the top of the conformal tooling 6, replace the conformal tooling 6 with the corresponding contour, and then fix it again.

[0044] Working principle

[0045] 1. Power transmission: The hydraulic pump station 4 provides high-pressure oil, which enters the lifting cylinder 3 through the hydraulic hose, pushes the piston rod to extend and retract, and drives the lifting box 2 to slide along the outside of the base box 1 to realize the lifting of the vehicle frame.

[0046] 2. Position locking: Hydraulic locks are installed at the inlet and outlet of the lifting cylinder 3. When the solenoid valve stops operating, the hydraulic lock closes, blocking the backflow of oil and ensuring that the cylinder piston rod stays in any position. At the same time, the positioning hole 7 cooperates with the safety pin 8 to further limit the relative displacement between the lifting box 2 and the base box 1 through mechanical insertion, providing double protection for lifting stability.

[0047] 3. Movement and Guidance: When the lifting cylinder 3 retracts, the universal caster 5 moves to the ground support device; during the lifting process, the end of the adjusting bolt 14 contacts the machined surface of the base box 1, and the lateral displacement of the lifting box 2 is limited by the rigid guidance of the bolt (displacement ≤ 0.5mm), and the vertical reinforcing plate 10 enhances the rigidity of the base to avoid deformation.

[0048] 4. Versatility: The conformal tooling 6 is detachably connected to the top of the lifting box 2 by bolts. Its outline is customized according to the shape of the bottom surface of the vehicle frame (such as arc, flat or irregular shape). After replacement, it can be adapted to different vehicle models, improving the utilization rate of the device.

[0049] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A mine car frame lifting device, characterized in that: It includes a base box (1) and a lifting box (2) that is slidably connected to the top of the base box (1); The base box (1) is equipped with a lifting cylinder (3) for driving the lifting box (2) to move up and down, and the lifting cylinder (3) is connected to the external hydraulic pump station (4). The bottom four corners of the lifting box (2) are provided with universal casters (5), and the top of the lifting box (2) is detachably connected with conformal tooling (6) that can be replaced according to the working conditions. The base box (1) and the lifting box (2) are provided with a plurality of corresponding positioning holes (7), and a safety pin (8) is inserted into the positioning hole (7).

2. The mine car frame lifting device according to claim 1, characterized in that: The bottom of the base box (1) is provided with a cross-shaped support base plate (9) for increasing the grounding area.

3. The mine car frame lifting device according to claim 2, characterized in that: A vertical reinforcing plate (10) for guiding and increasing strength is provided between the base box (1) and the cross-shaped support base plate (9), and the lifting box (2) is provided with a corresponding movable groove (11) at the vertical reinforcing plate (10).

4. The mine car frame lifting device according to claim 1, characterized in that: The omnidirectional caster (5) is located at the bottom of the base box (1) and in contact with the ground when the lifting cylinder (3) is fully retracted.

5. A mine car frame lifting device according to claim 1, characterized in that: The lifting cylinder (3) is a double-acting cylinder. The lifting and lowering of the lifting cylinder (3) is controlled by a solenoid valve. The inlet and outlet of the lifting cylinder (3) are equipped with hydraulic locks to ensure that the lifting cylinder (3) can be stably maintained in any position.

6. A mine car frame lifting device according to claim 1, characterized in that: The positioning holes (7) on the base box (1) are equidistantly arranged, and the bottom of the lifting box (2) is provided with a corresponding semi-circular slot (12) at the positioning hole (7).

7. A mine car frame lifting device according to claim 1, characterized in that: The lifting box (2) is provided with U-shaped brackets (13) on both sides for placing safety pins (8) during storage.

8. A mine car frame lifting device according to claim 1, characterized in that: The bottom side of the lifting box (2) is provided with a plurality of adjusting bolts (14) that pass through the lifting box (2) and abut against the side wall of the inner base box (1). A locking nut (15) is provided between the adjusting bolt (14) and the lifting box (2). When the base box (1) and the lifting box (2) move relative to each other, the adjusting bolt (14) has a guiding and supporting function.

9. A mine car frame lifting device according to claim 1, characterized in that: The bottom side of the base box (1) is provided with a cable opening (16) for connecting the lifting cylinder (3) and the hydraulic pump station (4) through a hydraulic hose.

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