Active safety device of underground coal mine concrete pump truck

Abstract

The utility model belongs to the technical field of coal mine underground engineering machinery, and relates to a coal mine underground concrete pump truck active safety device which comprises a truck body, a containing groove is formed in the bottom of the truck body, two symmetrically-distributed first lead screws are rotationally connected into the containing groove, and the left end and the right end of each first lead screw are each provided with a telescopic assembly. The telescopic assembly is matched with the first lead screw, rotating shafts are arranged at the left end and the right end of the bottom of the vehicle body, the telescopic assembly drives the rotating shafts to move up and down, wheels are installed at the two ends of each rotating shaft, four moving blocks are slidably arranged in the vehicle body, and four transmission assemblies are arranged in the vehicle body. The transmission assemblies are matched with the corresponding telescopic assemblies correspondingly and drive the corresponding moving blocks to slide on the vehicle body in a reciprocating mode. The overall width and height of the device are adjusted by moving the wheels and the hydraulic cylinder, and the device is suitable for the vehicle body to run in mine holes with different sizes.

Description

Technical Field

[0001] The utility model belongs to the technical field of underground coal mine engineering machinery and relates to an active safety device for an underground coal mine concrete pump truck. Background Art

[0002] Coal mine underground engineering is a construction project that focuses on mine construction, and integrates three major projects: mine construction, civil engineering, and electromechanical installation. As the main equipment for building closed walls in coal mines, underground concrete pump trucks are mainly used for pouring closed walls underground, which improves the work efficiency of underground workers and improves the working environment. However, the existing domestic underground concrete pump trucks for coal mines have wide dimensions and high heights. When the driver drives the vehicle, there will be blind spots, and the rear view is limited. It is easy to cause safety accidents in coal mines during reversing and traveling. Therefore, an active safety device for underground concrete pump trucks for coal mines is needed.

[0003] A coal mine car disclosed in Chinese patent CN220180768U includes a placing frame, a block is installed at the bottom of the placing frame, an axle is installed through the bearing inside the block, and rollers are installed at both ends of the axle. The block can provide support for the placing frame, the block can provide a penetrating space for the axle, and the roller can provide support for the axle. When the staff holds the placing frame and pushes the mine car, the placing frame moves under the action of external force through the support of the block, and the axle and the roller are connected to the placing frame through the block and move under the action of external force. At this time, the roller uses the friction with the guide rail to move along the direction of the guide rail, so that the mine car can move normally on the top of the guide rail.

[0004] The rollers of the mine car are installed on the axle, and the axle is installed at the bottom of the placement frame through a block, so that the position of the rollers at the bottom of the placement frame is fixed. When the vehicle body is driving in a smaller mine tunnel or in a mine cave with more debris, it is easy to cause the vehicle to be blocked.

[0005] In order to solve the above problems, the utility model proposes an active safety device for an underground concrete pump truck in a coal mine. Utility Model Content

[0006] In order to solve the problems existing in the background technology, the utility model proposes an active safety device for a concrete pump truck in an underground coal mine.

[0007] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: comprising a vehicle body, a receiving groove is provided at the bottom of the vehicle body, two symmetrically distributed first screw rods are rotatably connected inside the receiving groove, a group of telescopic components are provided at the left and right ends of each first screw rod, the telescopic components cooperate with the first screw rod, and a rotating shaft is provided at the left and right ends of the bottom of the vehicle body;

[0008] The two telescopic components at the left end cooperate with each other and drive the rotating shaft at the left end to move up and down together, and the two telescopic components at the right end cooperate with each other and drive the rotating shaft at the right end to move up and down together, and wheels are installed at both ends of each rotating shaft;

[0009] The vehicle body is provided with four sliding moving blocks inside, and four transmission components are provided inside the vehicle body. The transmission components cooperate with the corresponding telescopic components respectively, and the transmission components drive the corresponding moving blocks to slide back and forth on the vehicle body. The ends of the moving blocks extending to the outside of the vehicle body are provided with fixing components for fixing the vehicle body.

[0010] Furthermore, two motors are fixedly connected to one side of the vehicle body, and the motors respectively drive the corresponding first screw rods to rotate.

[0011] Further, the telescopic components each include a first slider and a second slider, two symmetrical thread segment groups are provided at the left and right ends of the first screw rod, each thread segment group includes two thread segments with different rotation directions, the telescopic components are respectively located on the corresponding thread segment groups, and the first slider and the second slider in the telescopic components are respectively threadedly sleeved on the two thread segments with different rotation directions in the thread segment group;

[0012] The two inner walls corresponding to the receiving groove are provided with sliding grooves, and the ends of the first sliding block and the second sliding block are respectively slidably connected to the corresponding sliding grooves;

[0013] The bottoms of the first slider and the second slider are both rotatably connected with connecting plates, the ends of the two connecting plates in the telescopic assembly are hinged with the same sleeve, and the two ends of the rotating shaft are rotatably sleeved on the corresponding sleeves respectively.

[0014] Furthermore, a mining horn is arranged on the top of the vehicle body, and an infrared sensor is arranged at the end of the vehicle body.

[0015] Furthermore, four first grooves are formed on the vehicle body, and the moving blocks are slidably disposed in the corresponding first grooves respectively.

[0016] Further, the transmission assembly includes a second screw rod, one end of which is rotatably connected to the inner wall of the corresponding first groove, and the other end of which is threadedly connected to the inside of the corresponding moving block;

[0017] The upper surfaces of the first sliding blocks are fixedly connected with racks, and the ends of the second screw rods away from the moving blocks are fixedly sleeved with gears, which are respectively meshed with the corresponding racks.

[0018] Furthermore, four arc-shaped second grooves are formed at the bottom of the vehicle body, and the second grooves cooperate with the wheels, and the wheels are respectively arranged in the corresponding second grooves.

[0019] Furthermore, the fixing components all include hydraulic cylinders, which are respectively fixedly connected to corresponding moving blocks, the hydraulic cylinders are vertically arranged, and the bottom of the output rod of each hydraulic cylinder is fixedly connected to a fixing plate.

[0020] Compared with the prior art, the utility model has the following beneficial effects:

[0021] The active safety device of the underground concrete pump truck in the coal mine is provided with two first screw rods. The first screw rods rotate to make the telescopic assembly drive the corresponding shaft to move up and down, thereby driving the wheels to move up and down, changing the distance between the shaft and the bottom of the vehicle body, and adjusting the overall height of the device. The telescopic assembly will also cooperate with the transmission assembly to drive the moving block to slide on the vehicle body, changing the distance between the hydraulic cylinder and the side of the vehicle body, thereby adjusting the overall width of the device. It is suitable for the vehicle body to travel in mines of different sizes, reducing the situation where the vehicle is blocked. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0023] Figure 2 It is a cross-sectional view of the utility model;

[0024] Figure 3 It is a structural schematic diagram of the slideway in the utility model;

[0025] Figure 4 It is a structural schematic diagram of the first screw rod in the utility model;

[0026] Figure 5 This utility model Figure 2 Schematic diagram of the structure enlarged at point A in the middle.

[0027] In the figure: 1. vehicle body; 2. mining horn; 3. moving block; 4. hydraulic cylinder; 5. wheel; 6. motor; 7. infrared sensor; 8. first slider; 9. second slider; 10. first screw rod; 11. connecting plate; 12. rack; 13. gear; 14. second screw rod; 15. first groove; 16. second groove; 17. slide groove; 18. rotating shaft; 19. sleeve; 20. fixing plate. DETAILED DESCRIPTION

[0028] 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.

[0029] like Figure 1-Figure 5 As shown, the technical solution adopted by the utility model is as follows: an active safety device for a concrete pump truck in a coal mine, comprising a vehicle body 1, a mining horn 2 is arranged on the top of the vehicle body 1, and an infrared sensor 7 is arranged at the end of the vehicle body 1. When the vehicle body 1 is driving, the infrared sensor 7 senses the distance between the vehicle body 1 and the obstacle, so as to remind the driver. At the same time, the mining horn 2 on the vehicle body 1 can also effectively remind the coal mine workers to avoid the obstacle effectively by playing the sound.

[0030] A receiving groove is provided at the bottom of the vehicle body 1, and two symmetrically distributed first screw rods 10 are rotatably connected inside the receiving groove.

[0031] Two motors 6 are fixedly connected to one side of the vehicle body 1, and the motors 6 respectively drive the corresponding first screw rods 10 to rotate. One end of the first screw rod 10 is fixedly connected to the output end of the motor 6, and the other end of the first screw rod 10 is rotatably connected to the inner wall of the receiving groove.

[0032] A set of telescopic components is provided at both left and right ends of each first screw rod 10, and the telescopic components cooperate with the first screw rod 10. A rotating shaft 18 is provided at both left and right ends of the bottom of the vehicle body 1.

[0033] The two telescopic assemblies at the left end cooperate with each other and drive the rotating shaft 18 at the left end to move up and down together, and the two telescopic assemblies at the right end cooperate with each other and drive the rotating shaft 18 at the right end to move up and down together. Wheels 5 are installed at both ends of each rotating shaft 18.

[0034] Four arc-shaped second grooves 16 are provided at the bottom of the vehicle body 1 , and the second grooves 16 cooperate with the wheels 5 , and the wheels 5 are respectively arranged in the corresponding second grooves 16 , so that the wheels 5 can better fit with the vehicle body 1 .

[0035] The telescopic components include a first slider 8 and a second slider 9. Two symmetrical thread segment groups are arranged at the left and right ends of the first screw rod 10, and each thread segment group includes two left and right thread segments with different rotation directions, and the telescopic components are respectively located on the corresponding thread segment groups. The first slider 8 and the second slider 9 in the telescopic component are respectively threadedly sleeved on the two thread segments with different rotation directions in the thread segment group.

[0036] The two inner walls corresponding to the receiving groove are provided with slide grooves 17, and the ends of the first slider 8 and the second slider 9 are respectively slidably connected in the corresponding slide grooves 17. The slide grooves 17 limit the first slider 8 and the second slider 9 so that the first slider 8 and the second slider 9 can only slide along the slide grooves 17.

[0037] The bottoms of the first slider 8 and the second slider 9 are both rotatably connected with a connecting plate 11. The ends of the two connecting plates 11 in the telescopic assembly are hinged with the same sleeve 19, so that the two connecting plates 11 connected with the sleeve 19 are V-shaped, and the two ends of the rotating shaft 18 are respectively rotatably sleeved on the corresponding sleeve 19. A bearing is fixedly arranged inside the sleeve 19, and the rotating shaft 18 is fixedly sleeved on the inner ring of the bearing.

[0038] Four moving blocks 3 are slidably arranged inside the vehicle body 1. Four first grooves 15 are provided on the vehicle body 1, and the moving blocks 3 are slidably arranged in the corresponding first grooves 15 respectively.

[0039] Four transmission assemblies are arranged inside the vehicle body 1 , and the transmission assemblies cooperate with corresponding telescopic assemblies respectively. The transmission assemblies drive corresponding moving blocks 3 to slide back and forth on the vehicle body 1 .

[0040] The transmission assembly includes a second screw rod 14 . One end of the second screw rod 14 is rotatably connected to the inner wall of the corresponding first groove 15 , and the other end of the second screw rod 14 is threadedly connected to the inside of the corresponding moving block 3 .

[0041] The upper surface of the first sliding block 8 is fixedly connected with a rack 12 , and the end of the second screw rod 14 away from the moving block 3 is fixedly sleeved with a gear 13 , which is meshed with the corresponding rack 12 .

[0042] One end of the moving block 3 extending outside the vehicle body 1 is provided with a fixing component for fixing the vehicle body 1 .

[0043] The fixed components all include hydraulic cylinders 4, and the hydraulic cylinders 4 are respectively fixedly connected to the corresponding moving blocks 3. The hydraulic cylinders 4 are vertically arranged, and the bottom of the output rod of each hydraulic cylinder 4 is fixedly connected to a fixing plate 20.

[0044] The first slide blocks 8 on the two telescopic components at the left end are both threadedly sleeved on the threaded segments at the left end of the corresponding threaded segment group, and the first slide blocks 8 on the two telescopic components at the right end are both threadedly sleeved on the threaded segments at the right end of the corresponding threaded segment group. The four fixing plates 20 are respectively located at the four corners of the vehicle body 1. When the hydraulic cylinder 4 is started to make the output rod push the fixing plate 20 to the ground, the vehicle body 1 is evenly stressed and has good stability.

[0045] Working principle:

[0046] When the vehicle body 1 is transporting concrete, the infrared sensor 7 senses the distance between the vehicle body 1 and obstacles, and the mining speaker 2 on the vehicle body 1 effectively prompts the coal mine workers to avoid obstacles through external sound.

[0047] When the vehicle body 1 travels in a small space, the two motors 6 are started to rotate the two first screw rods 10 synchronously. The first screw rods 10 rotate forward, and the first slider 8 and the second slider 9 corresponding to each first screw rod 10 move in opposite directions, and the first slider 8 and the second slider 9 both slide along the slide groove 17.

[0048] When the distance between the corresponding first slider 8 and the second slider 9 increases, the corresponding sleeve 19 is pulled upward by the connecting plate 11, so that the two shafts 18 move upward together, and the wheel 5 moves upward and gradually fits the second groove 16. The wheel 5 is contracted to reduce the overall height of the device.

[0049] When the first slider 8 slides, it drives the rack 12 to move, and the second rack 12 drives the corresponding gear 13 to rotate, and the gear 13 drives the corresponding second screw 14 to rotate. The second screw 14 rotates in the moving block 3, and the moving block 3 slides toward the inside of the vehicle body 1, driving the hydraulic cylinder 4 to move toward the side of the vehicle body 1. The hydraulic cylinder 4 is retracted to reduce the overall width of the device. It is convenient for the vehicle body 1 to travel in a smaller mine tunnel, reduce collisions, and increase safety.

[0050] After transportation, when the concrete needs to be unloaded, the motor 6 drives the two first screw rods 10 to rotate synchronously. The first screw rods 10 are reversed, and the first slider 8 and the second slider 9 corresponding to each first screw rod 10 move toward each other.

[0051] The distance between the corresponding first slider 8 and the second slider 9 is shortened, and the wheel 5 is pushed downward through the connecting plate 11. At this time, the height of the vehicle body 1 relative to the ground increases, and the height of the infrared sensor 7 increases, so that the detection range of the infrared sensor 7 is increased, so as to better detect obstacles ahead.

[0052] Similarly, the hydraulic cylinder 4 will also move away from the side of the vehicle body 1. After the hydraulic cylinder 4 is moved to a suitable position, the hydraulic cylinder 4 is started, so that the output rod of the hydraulic cylinder 4 pushes the fixing plate 20 downward to the ground, so that the fixing plate 20 fixes the vehicle body 1, and after fixing, the vehicle body 1 can be unloaded or loaded.

[0053] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An active safety device for a concrete pump truck in a coal mine, characterized in that: The vehicle comprises a vehicle body (1), wherein a receiving groove is provided at the bottom of the vehicle body (1), wherein two symmetrically distributed first screw rods (10) are rotatably connected inside the receiving groove, and a group of telescopic components are provided at the left and right ends of each first screw rod (10), and the telescopic components cooperate with the first screw rod (10), and a rotating shaft (18) is provided at the left and right ends of the bottom of the vehicle body (1); The two telescopic components at the left end cooperate with each other and drive the rotating shaft (18) at the left end to move up and down, and the two telescopic components at the right end cooperate with each other and drive the rotating shaft (18) at the right end to move up and down, and wheels (5) are installed at both ends of each rotating shaft (18); The vehicle body (1) is provided with four moving blocks (3) for sliding inside. Four transmission components are provided inside the vehicle body (1). The transmission components cooperate with corresponding telescopic components respectively. The transmission components drive the corresponding moving blocks (3) to slide back and forth on the vehicle body (1). One end of the moving blocks (3) extending outside the vehicle body (1) is provided with a fixing component for fixing the vehicle body (1).

2. The active safety device for underground concrete pump truck in coal mine according to claim 1, characterized in that: Two motors (6) are fixedly connected to one side of the vehicle body (1), and the motors (6) respectively drive the corresponding first screw rods (10) to rotate.

3. The active safety device for underground concrete pump truck in coal mine according to claim 1, characterized in that: The telescopic components each comprise a first slider (8) and a second slider (9); two symmetrical thread segment groups are arranged at the left and right ends of the first screw rod (10); each thread segment group comprises two thread segments with different rotation directions; the telescopic components are respectively located on the corresponding thread segment groups; the first slider (8) and the second slider (9) in the telescopic components are respectively threadedly sleeved on the two thread segments with different rotation directions in the thread segment group; The two corresponding inner walls of the receiving groove are both provided with sliding grooves (17), and the ends of the first sliding block (8) and the second sliding block (9) are respectively slidably connected in the corresponding sliding grooves (17); The bottoms of the first slider (8) and the second slider (9) are both rotatably connected to a connecting plate (11), the ends of the two connecting plates (11) in the telescopic assembly are hinged to the same sleeve (19), and the two ends of the rotating shaft (18) are respectively rotatably sleeved on the corresponding sleeves (19).

4. The active safety device for underground concrete pump truck in coal mine according to claim 1, characterized in that: A mining horn (2) is arranged on the top of the vehicle body (1), and an infrared sensor (7) is arranged at the end of the vehicle body (1).

5. The active safety device for underground concrete pump truck in coal mine according to claim 3, characterized in that: The vehicle body (1) is provided with four first grooves (15), and the moving blocks (3) are respectively slidably arranged in the corresponding first grooves (15).

6. The active safety device for underground concrete pump truck in coal mine according to claim 5, characterized in that: The transmission assembly comprises a second screw rod (14), one end of the second screw rod (14) is rotatably connected to the inner wall of the corresponding first groove (15), and the other end of the second screw rod (14) is threadedly connected to the inside of the corresponding moving block (3); The upper surface of the first sliding block (8) is fixedly connected with a rack (12), and the end of the second screw rod (14) away from the moving block (3) is fixedly sleeved with a gear (13), and the gear (13) is respectively meshed with the corresponding rack (12).

7. The active safety device for a concrete pump truck in a coal mine according to claim 1, characterized in that: The bottom of the vehicle body (1) is provided with four arc-shaped second grooves (16), the second grooves (16) cooperate with the wheels (5), and the wheels (5) are respectively arranged in the corresponding second grooves (16).

8. The active safety device for underground concrete pump truck in coal mine according to claim 1, characterized in that: The fixed components all include hydraulic cylinders (4), which are respectively fixedly connected to corresponding moving blocks (3). The hydraulic cylinders (4) are vertically arranged, and the bottom of the output rod of each hydraulic cylinder (4) is fixedly connected to a fixed plate (20).

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