Sample box loading, unloading and storing cart for true-triaxial rock testing instrument

Abstract

The present invention relates to the technical field of true-triaxial testing of rocks, and specifically relates to a sample box loading, unloading and storing cart for a true-triaxial rock testing instrument. The cart comprises a cart supporting frame. The cart supporting frame is fixed to a lower cart platform. Cart movement wheels and cart supporting legs are disposed at four corners at the bottom of the lower cart platform, a cart handrail is fixed to the front end of the lower cart platform, and a power distribution box and an operation console are provided on the lower cart platform. A cart connecting plate is provided above the cart supporting frame. The cart connecting plate is slidably connected to an upper cart platform by means of a transverse electric movement apparatus. The upper cart platform is slidably connected to a lifting apparatus supporting plate by means of a longitudinal electric movement apparatus. Electric push rods are fixed to four corners of an upper portion of the lifting apparatus supporting plate, and an upper counterweight box is provided on the lifting apparatus supporting plate. A sample box gripper is provided above the electric push rods, and a fixing plate is provided above the sample box gripper. The present invention achieves precise rigid lifting, eliminates shaking during loading and unloading processes using overhead cranes, and prevents collisions between devices.

Description

A rock true triaxial test instrument sample box loading and unloading trolley Technical Field

[0001] The invention relates to the technical field of rock true triaxial testing, and in particular to a rock true triaxial testing instrument sample box loading and unloading storage trolley. Background Art

[0002] Rockburst is one of the major disasters faced by deep underground projects. The issue of rockburst has received more and more attention from researchers. Domestic and foreign scholars have conducted a large number of deep hard rock experiments and developed deep hard rock experimental equipment.

[0003] With the development and progress of rock true triaxial experimental technology, various types of equipment and instruments have emerged one after another. In the existing technology, due to its special loading method, the sample installation steps of true triaxial equipment are relatively complicated, and most of them are installed by manual transportation or with the assistance of mechanical equipment such as overhead cranes. However, true triaxial instruments and equipment have high requirements on material stiffness, and the equipment is relatively heavy. It is difficult to control the accuracy by methods such as manpower or overhead cranes, and it is impossible to achieve the accuracy of the lifting position of the sample box, which greatly reduces the experimental efficiency. In addition, overhead cranes are mostly public equipment in laboratories, and it is difficult to ensure that they can be used as needed. Moreover, overhead cranes are difficult to operate and are prone to swinging, which can easily cause equipment collisions. In serious cases, they may accidentally injure experimental personnel, posing a major safety hazard.

[0004] Therefore, in response to the above problems, the present invention proposes a rock true triaxial test instrument sample box loading and unloading storage trolley, which can replace the gripper according to different equipment, can be used on demand, is more convenient to use, and greatly improves the experimental efficiency; and realizes precise rigid lifting of the sample box, greatly improving the accuracy of the sample box's take-off and landing position, eliminating shaking during the loading and unloading process using an overhead crane, avoiding shaking of the sample box that may cause damage to the equipment or injury to the experimenter, and improving the safety of the experiment.

[0005] Summary of the Invention

[0006] The lifting mechanism is a bottom end face of the lifting mechanism, and the lifting mechanism is a bottom end face of the lifting mechanism, and the lifting mechanism is a bottom end face of the lifting mechanism, and a bottom end face of the lifting mechanism is provided with a lifting mechanism, and a lifting mechanism is provided with a lifting mechanism, and a lifting mechanism is provided with a lifting mechanism.

[0007] The upper surface of the trolley connecting plate is symmetrically provided with sliding rails arranged along the horizontal direction, and two pairs of sliders are symmetrically arranged on the sliding rails, and the sliders are at the lower end of the trolley upper platform. The length of the sliding rails is the same as the length of the horizontal side of the trolley connecting plate; the longitudinal length of the trolley connecting plate is the same as that of the trolley upper platform, and the horizontal length of the trolley connecting plate is less than or equal to the horizontal length of the trolley upper platform.

[0008] The upper surface of the trolley upper platform is symmetrically provided with guide rails arranged in the longitudinal direction, and two pairs of sliders are symmetrically arranged on the guide rails, and the sliders are at the lower end of the lifting device support plate. The horizontal width of the trolley upper platform is the same as the width of the lifting device support plate, and the longitudinal length of the trolley upper platform is greater than the length of the lifting device support plate.

[0009] The horizontal electric moving device and the vertical electric moving device have the same structure, including: a moving motor, a reducer, a ball screw and a fixed block;

[0010] The mobile motor of the horizontal electric moving device is arranged at the outermost end, the mobile motor is connected to the reducer, the reducer is fixed at the protruding block position of the longitudinal side of the trolley connecting plate, the ball screw is connected to the output end of the reducer, and the length of the ball screw is less than or equal to the horizontal length of the trolley connecting plate; the fixed block is sleeved on the ball screw, and the fixed block is fixed to the bottom of the trolley upper platform;

[0011] The moving motor of the longitudinal electric moving device is arranged at the outermost end, the moving motor is connected to the reducer, the reducer is fixed on the horizontal edge of the platform on the trolley, the ball screw is connected to the output end of the reducer, and the length of the ball screw is less than or equal to the horizontal length of the platform on the trolley; the fixed block is mounted on the ball screw, and the fixed block is fixed to the bottom of the lifting device support plate.

[0012] The trolley moving wheels include two universal wheels and two one-way wheels. The universal wheels are installed on the bottom of the trolley lower platform on the trolley handrail side, and the one-way wheels are installed on the bottom of the trolley lower platform away from the trolley handrail side.

[0013] The trolley support foot comprises an electric lifting rod and a support foot, wherein the lower end of the electric lifting rod is connected to the support foot, and the upper end is connected to the lower platform of the trolley.

[0014] The sample box gripper includes a gripping head and a stable connecting plate, which are an integrated structure. A 0.5 cm high card block is provided at the front end of the gripping head.

[0015] Beneficial effects of the present invention:

[0016] The rock true triaxial test instrument sample box loading and unloading storage trolley of the present invention has a simple structure and low cost compared with traditional lifting equipment, and realizes the convenient movement of the trolley; at the same time, the present invention can replace the sample box gripper according to different equipment to meet the loading and unloading requirements of different equipment; the present invention can achieve precise rigid lifting, eliminates the problem of mutual collision between equipment caused by shaking during loading and unloading with an overhead crane, increases the contact area between the lifting equipment and the sample box, avoids safety hazards during the process of loading and unloading the sample box using an overhead crane, and ensures safe and efficient testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a sample box loading and unloading trolley for a true triaxial testing instrument of rock according to the present invention;

[0018] Figure 2 shows a side view of the sample box of a rock true triaxial test instrument according to the present invention during loading and unloading of a sample box storage trolley and the position of the sample box;

[0019] Figure 3 is a structural diagram of a horizontal electric moving device for loading and unloading a sample box of a rock true triaxial test instrument according to the present invention;

[0020] Figure 4 is a diagram showing the position relationship of a lateral electric moving device for loading and unloading a sample box of a rock true triaxial test instrument according to the present invention;

[0021] Figure 5 is a diagram showing the position relationship of the longitudinal electric moving device of the sample box loading and unloading trolley of a rock true triaxial testing instrument according to the present invention;

[0022] In the attached figure: 1. Trolley handrail; 2. Trolley lower platform; 3. Trolley moving wheel; 4. Trolley supporting foot; 5. Distribution box; 6. Operating table; 7. Lower counterweight box; 8. Trolley supporting frame; 9. Trolley connecting plate; 10. Longitudinal electric moving device; 11. Trolley upper platform; 12. Horizontal electric moving device; 13. Lifting device support plate; 14. Electric push rod; 15. Guide rail; 16. Upper counterweight box; 17. Sample box gripper; 18. Fixed plate; 19. Sample box; 20. Block; 21. Slide rail; 22. Slider; 191 Falling guide block; 201. Moving motor; 202. Reducer; 203. Ball screw; 204 Fixed block. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] As shown in Figures 1-5, a rock true triaxial test instrument sample box loading and unloading storage trolley includes: a trolley support frame 8, the trolley support frame 8 is fixed on the trolley lower platform 2, and a lower counterweight box 7 is provided inside the trolley support frame 8; the four corners of the bottom of the trolley lower platform 2 are provided with trolley moving wheels 3 and trolley support feet 4, the front end of the trolley lower platform 2 is fixed with a trolley handrail 1, and the trolley lower platform 2 between the trolley handrail 1 and the trolley support frame 8 is provided with a distribution box 5 and an operating table 6; a trolley connecting plate 9 is provided above the trolley support frame 8, and the trolley connecting plate 9 is slidably connected to the trolley upper platform 2 through a horizontal electric moving device 12. The upper platform 2 is slidably connected to the lifting device support plate 13 through a longitudinal electric moving device 10; the four corners of the upper part of the lifting device support plate 13 are fixed with electric push rods 14, and an upper counterweight box 16 is provided on the lifting device support plate 13, and the upper counterweight box 16 is located inside the space surrounded by the electric push rods 14; a sample box gripper 17 is provided above the electric push rod 14, and a fixed plate 18 is provided above the sample box 17. The fixed plate 18 can increase the lifting stability of the electric push rod 14 and ensure that each electric push rod 14 is lifted and lowered synchronously. For different sample boxes 19, the fixed plate 18 can be removed and the sample box gripper 17 can be replaced to meet the operation requirements of other sample boxes.

[0025] The upper surface of the trolley connecting plate 9 is symmetrically provided with sliding rails 21 arranged along the horizontal direction, and two pairs of sliders 22 are symmetrically arranged on the sliding rails 21, and the sliders 22 are at the lower end of the trolley upper platform 11. The length of the sliding rails 21 is the same as the length of the horizontal side of the trolley connecting plate 9; the longitudinal length of the trolley connecting plate 9 is the same as that of the trolley upper platform 11, and the horizontal length of the trolley connecting plate 9 is less than or equal to the horizontal length of the trolley upper platform 11.

[0026] The upper surface of the trolley upper platform 11 is symmetrically provided with guide rails 15 arranged in the longitudinal direction, and two pairs of sliders are symmetrically arranged on the guide rails 15, and the sliders 22 are at the lower end of the lifting device support plate 13. The lateral width of the trolley upper platform 11 is the same as the width of the lifting device support plate 13, and the longitudinal length of the trolley upper platform 11 is greater than the length of the lifting device support plate 13.

[0027] The transverse electric moving device 12 and the longitudinal electric moving device 10 have the same structure, including: a moving motor 201, a reducer 202, a ball screw 203 and a fixed block 204; the longitudinal electric moving device 10 and the transverse electric moving device 12 can adjust the moving speed to achieve precise control of the rising and falling positions of the sample box 19, and are electrically controlled by the distribution box 5 through the moving motor 201 to ensure that the longitudinal electric moving device 10 and the transverse moving device 12 will not slide freely without control.

[0028] The moving motor 201 of the horizontal electric moving device 12 is set at the outermost end, the moving motor 201 is connected to the reducer 202, the reducer 202 is fixed at the protruding block position on the longitudinal side of the trolley connecting plate 9, the ball screw 203 is connected to the output end of the reducer 202, and the length of the ball screw 203 is less than or equal to the horizontal length of the trolley connecting plate 9; the fixed block 204 is mounted on the ball screw 203, and the fixed block 204 is fixed to the bottom of the trolley upper platform 11.

[0029] The moving motor 201 of the longitudinal electric moving device 10 is arranged at the outermost end, the moving motor 201 is connected to the reducer 202, the reducer 202 is fixed on the horizontal edge of the trolley upper platform 11, the ball screw 203 is connected to the output end of the reducer 202, and the length of the ball screw 203 is less than or equal to the horizontal length of the trolley upper platform 11; the fixed block 204 is mounted on the ball screw 203, and the fixed block 204 is fixed to the bottom of the lifting device support plate 13.

[0030] The ball screw 203 is of threaded type, and the rotating block 204 is of nut type. Driven by the moving motor 201, the rotating block is fixed and the ball screw 203 rotates. The horizontal electric moving device 12 uses the ball screw 203 to drive the entire trolley upper platform 11 to move horizontally on the slide rail 21 through the slider 22. The longitudinal electric moving device 10 uses the ball screw 203 to drive the lifting device support plate 13 to move longitudinally on the guide rail 15 through the slider 22.

[0031] The trolley moving wheels 3 include two universal wheels and two one-way wheels. The universal wheels are installed at the bottom of the trolley lower platform 2 on the trolley handrail side 1, and the one-way wheels are installed at the bottom of the trolley lower platform 2 away from the trolley handrail side 1.

[0032] The trolley support foot 4 includes an electric lifting rod and a support foot. The lower end of the electric lifting rod is connected to the support foot, and the upper end is connected to the trolley lower platform 2. The electric lifting rod is an electric push rod or a hydraulic cylinder. The support foot is made of rubber material, which is used to increase the force area and friction between the trolley and the ground, prevent the trolley from sliding or tipping over during operation, and play a certain buffering role.

[0033] The sample box gripper 17 includes a gripper head and a stable connecting plate, which are an integrated structure. A 0.5 cm high block 20 is provided at the front end of the gripper head to prevent the sample box from accidentally slipping during loading and unloading.

[0034] The distribution box 5 is connected to the operating table 6, the electric push rod 14, the moving motor 201 of the horizontal electric moving device 12 and the longitudinal electric moving device 10, and the electric lifting rod of the trolley support foot 4. Electric energy is provided through the distribution box 5. At the same time, the moving motor 201 of the horizontal electric moving device 12 and the longitudinal electric moving device 10, the electric push rod 14 and the electric lifting rod of the trolley support foot 4 are connected to the operating table 6, and the start and stop are controlled by the operating table 6.

[0035] The weights of the upper counterweight box 16 and the lower counterweight box 7 are adjustable, and can be adjusted according to the actual weight of loading and unloading during actual operation.

[0036] The specific embodiment of the trolley during the test operation is as follows:

[0037] Step 1: Place the sample box 19 on the trolley upper platform 11, lower the trolley support legs 4, and then lock the trolley moving wheels 3; use the longitudinal electric moving device 10 to drive the lifting device support plate 13 to move along the guide rail 15, so that the sample box gripper 17 reaches above the sample box 19, adjust the electric push rod 14 to lower the sample box gripper 17, so that the gripping head of the sample box gripper 17 is inserted into the card slot of the sample box 19, raise the electric push rod 14, so that the sample box gripper 17 clamps the sample box 19, and at the same time uses the card block 20 on the sample box gripper 17 to lock it, thereby grasping the sample box 19.

[0038] Step 2: Use the horizontal electric moving device 12 to move the platform 11 on the trolley along the slide rail 21, and the longitudinal electric moving device 10 drives the lifting device support plate 13 to move along the guide rail 15, so that the sample box is above the test equipment, adjust the electric push rod 14 to lift and lower, control the falling guide block (191) on the sample box 19 to match the experimental equipment and then descend, the longitudinal electric moving device 10 returns the lifting device support plate 13 to one end of the trolley platform 11, retracts the sample box gripper 17, and starts the experiment.

[0039] Step 3: Repeat step 1 to grasp the sample box 19, adjust the electric push rod 14 to raise the sample box 19 so that it is out of the test equipment, and use the longitudinal electric moving device 10 to retract the lifting device support plate 13 to one end of the trolley upper platform 11, place the sample box 19 on the trolley upper platform 11, and retract the trolley support leg 4.

[0040] The solutions in the embodiments are not intended to limit the patent protection scope of the present invention. Any equivalent implementation or modification that does not deviate from the present invention is included in the patent scope of this case.

Claims

1. A rock true triaxial test instrument sample box loading and unloading storage trolley, characterized in that: include: A trolley support frame (8), the trolley support frame (8) is fixed on the trolley lower platform (2), and a lower counterweight box (7) is arranged inside the trolley support frame (8); trolley moving wheels (3) and trolley support feet (4) are arranged at the four corners of the bottom of the trolley lower platform (2); a trolley handrail (1) is fixed at the front end of the trolley lower platform (2); a distribution box (5) and an operating table (6) are arranged on the trolley lower platform (2) between the trolley handrail (1) and the trolley support frame (8); a trolley connecting plate (9) is arranged above the trolley support frame (8), and a trolley connecting plate (9) is arranged on the trolley connecting plate (9). The upper platform (11) of the trolley is slidably connected to the upper platform (11) of the trolley through a transverse electric moving device (12), and the upper platform (11) of the trolley is slidably connected to the lifting device support plate (13) through a longitudinal electric moving device (10). Electric push rods (14) are fixed at the four corners of the upper part of the lifting device support plate (13). An upper counterweight box (16) is provided on the lifting device support plate (13), and the upper counterweight box (16) is located inside the space surrounded by the electric push rods (14); a sample box gripper (17) is provided above the electric push rod (14), and a fixed plate (18) is provided above the sample box gripper (17).

2. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The upper surface of the trolley connecting plate (9) is symmetrically provided with a slide rail (21) arranged in a transverse direction, and two pairs of sliders (22) are symmetrically arranged on the slide rail (21), and the sliders (22) are at the lower end of the trolley upper platform (11), and the length of the slide rail (21) is the same as the length of the transverse side of the trolley connecting plate (9); the longitudinal length of the trolley connecting plate (9) is the same as that of the trolley upper platform (11), and the transverse length of the trolley connecting plate (9) is less than or equal to the transverse length of the trolley upper platform (11).

3. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The upper surface of the trolley upper platform (11) is symmetrically provided with guide rails (15) arranged in the longitudinal direction, and two pairs of sliders (22) are symmetrically arranged on the guide rails (15), and the sliders (22) are at the lower end of the lifting device support plate (13), the lateral width of the trolley upper platform (11) is the same as the width of the lifting device support plate (13), and the longitudinal length of the trolley upper platform (11) is greater than the length of the lifting device support plate (13).

4. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The transverse electric moving device (12) and the longitudinal electric moving device (10) have the same structure, and include: a moving motor (201), a reducer (202), a ball screw (203) and a fixing block (204); The moving motor (201) of the transverse electric moving device (12) is arranged at the outermost end, the moving motor (201) is connected to the reducer (202), the reducer (202) is fixed at the protruding block position of the longitudinal edge of the trolley connecting plate (9), the ball screw (203) is connected to the output end of the reducer (202), and the length of the ball screw (203) is less than or equal to the transverse length of the trolley connecting plate (9); the fixed block (204) is sleeved on the ball screw (203), and the fixed block (204) is fixed to the bottom of the trolley upper platform (11); The moving motor (201) of the longitudinal electric moving device (10) is arranged at the outermost end, the moving motor (201) is connected to the reducer (202), the reducer (202) is fixed on the lateral edge of the platform (11) on the trolley, the ball screw (203) is connected to the output end of the reducer (202), and the length of the ball screw (203) is less than or equal to the lateral length of the platform (11) on the trolley; the fixed block (204) is sleeved on the ball screw (203), and the fixed block (204) is fixed to the bottom of the lifting device support plate (13).

5. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The trolley moving wheels (3) include two universal wheels and two one-way wheels, wherein the universal wheels are mounted on the bottom of the trolley lower platform (2) on the side of the trolley handrail (1), and the one-way wheels are mounted on the bottom of the trolley lower platform (2) on the side away from the trolley handrail (1).

6. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The trolley support foot (4) comprises an electric lifting rod and a support foot, wherein the lower end of the electric lifting rod is connected to the support foot, and the upper end is connected to the trolley lower platform (2).

7. A rock true triaxial test instrument sample box loading and unloading storage trolley as claimed in claim 1, characterized in that: The sample box gripper (17) comprises a gripping head and a stable connecting plate, the gripping head and the stable connecting plate are an integrated structure, and a 0.5 cm high clamping block (20) is provided at the front end of the gripping head.

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