Underground belt frame leveling device

Abstract

The utility model discloses an underground belt frame leveling device, which relates to the technical field of underground maintenance and comprises a bottom frame, a bracket mounted on the bottom frame in an up-down sliding manner, a driving device for driving the bracket to lift and a locking structure, the underframe can be inserted into the bottom of the belt conveyor; the bracket can be supported on a longitudinal beam of the conveyor; the driving device comprises a crow bar with the middle hinged to the bottom frame, the front end of the crow bar stretches into the bottom of the bracket, and the free end of the tail of the crow bar can be pressed downwards by a human body. The locking structure comprises a mounting frame fixed above the bottom frame and a screw rod screwed on the mounting frame, and the bottom of the screw rod can abut against the upper surface of the crow bar after penetrating through the mounting frame; a hand wheel is fixed to the top of the screw. After the structure is adopted, the tail part of the crow bar is pressed downwards to realize the lifting of the bracket, so that the labor intensity is greatly reduced, and the operation efficiency is improved. By rotating the hand wheel, the position of the crow bar is locked through the locking structure, it can be guaranteed that the height of the leveled belt frame is stable, and leveling safety is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of downhole maintenance technology, and in particular to a downhole belt conveyor leveling device. Background Technology

[0002] During long-term operation, underground belt conveyors often experience frame misalignment due to geological subsidence or equipment vibration. This misalignment disrupts the belt tension balance, causing unilateral belt stress and continuous belt deviation, resulting in material spillage, belt edge wear, and in severe cases, belt jamming into the rollers and tearing. Therefore, regular manual leveling of the belt frame is necessary. Traditional leveling methods involve clearing coal from the belt and then having multiple people work together to lift the frame and insert adjusting shims. This method has the following drawbacks: 1. Lifting the frame is labor-intensive and requires multiple people to operate; 2. The confined space underground makes multi-person collaborative work difficult; 3. There is a lack of reliable temporary fixing mechanisms, posing safety hazards during leveling. Utility Model Content

[0003] The purpose of this invention is to provide a downhole conveyor belt leveling device that eliminates the need for multiple people to work together to lift the conveyor belt, reducing labor intensity. At the same time, the locking structure provides temporary fixation, ensuring the safety of leveling.

[0004] To achieve the above objectives, this utility model provides a downhole belt conveyor leveling device, including a base frame, a bracket slidably mounted on the base frame, a drive device for driving the bracket to rise and fall, and a locking structure; the base frame can be inserted into the bottom of the belt conveyor; the bracket can be supported on the longitudinal beam of the conveyor; the drive device includes a pry bar hinged in the middle to the base frame, the front end of the pry bar extending into the bottom of the bracket, and the free end of the tail of the pry bar can be pressed down by a human body; the locking structure includes a mounting bracket fixed above the base frame and a screw rod screwed to the mounting bracket, the bottom of the screw rod passing through the mounting bracket and abutting against the upper surface of the pry bar; a handwheel is fixed to the top of the screw rod.

[0005] With the above structure, the bracket can be raised by pressing down on the tail of the pry bar, greatly reducing labor intensity and improving operating efficiency. Rotating the handwheel locks the pry bar position, ensuring the belt frame height remains stable after leveling and guaranteeing leveling safety.

[0006] Preferably, the bracket includes a support block and sliding columns disposed at the bottom of the support block; the support block includes a support block body with an upward-facing groove on the support block body, into which the longitudinal beam of the conveyor can be inserted; multiple sliding columns are provided, symmetrically arranged on both sides of the bottom of the support block; the base frame has corresponding sliding holes for the sliding columns, allowing the sliding columns to slide up and down within the sliding holes. Through this structural design, the bracket and the base frame cooperate to achieve smooth lifting and lowering.

[0007] Preferably, the groove opening has chamfers on both sides. This design facilitates the insertion of the conveyor's longitudinal beam. Preferably, a support roller is rotatably mounted at the end of the pry bar that extends into the bottom of the bracket, and the support roller makes rolling contact with the bottom of the bracket.

[0008] Preferably, the bottom of the bracket is provided with a downwardly protruding roller track, and the wheel surface of the support roller is provided with a groove corresponding to the roller track. The roller track is engaged in the groove, and the support roller rolls along the roller track. This structure reduces friction, making the entire device structurally stable and reliable in operation.

[0009] Preferably, the free end of the pry bar is provided with a slot into which an extension rod can be inserted. This structural design, allowing the extension rod to be inserted into the pry bar's tail, enables the device to adapt to different underground spatial environments, facilitating leveling operations for the operator.

[0010] Preferably, the slot and the extension rod are detachably fixed together by connecting bolts. This design allows for easy adjustment of the pry bar length.

[0011] Preferably, the ratio of the front end to the rear end of the pry bar is no greater than 1:3. This structural design allows for the reasonable distribution of torque.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are:

[0013] This utility model provides a leveling device for underground conveyor belts, which solves the technical problem that existing underground conveyor belt leveling requires multiple people to lift the conveyor belt, resulting in high labor intensity and the lack of temporary fixing devices, thus easily leading to safety accidents. This utility model eliminates the need for multiple people to cooperate in lifting the conveyor belt, reducing labor intensity, while the locking structure provides temporary fixing, ensuring the safety of leveling. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the installation structure of a downhole conveyor belt leveling device according to the present invention;

[0015] Figure 2 This is a schematic diagram of the structure of a downhole conveyor belt leveling device according to the present invention;

[0016] Figure 3 This is a schematic diagram of the structure of the support rollers and roller conveyor;

[0017] Figure 4 This is a schematic diagram of the position and structure of the crowbar of this device in its initial state;

[0018] Figure 5 This is a schematic diagram of the position and structure of the crowbar of the device in its first working state;

[0019] Figure 6This is a schematic diagram of the position and structure of the crowbar of the device in the second working state.

[0020] In the diagram, 1 is the base frame, 11 is the support plate, 12 is the base plate, 13 is the support leg, 2 is the bracket, 21 is the support block, 211 is the support groove, 212 is the chamfer, 213 is the roller conveyor, 22 is the sliding column, 3 is the pry bar, 31 is the support roller, 311 is the slot, 32 is the slot, 33 is the extension rod, 4 is the mounting bracket, 41 is the screw, 42 is the handwheel, 6 is the belt conveyor, and 61 is the longitudinal beam. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] The orientations mentioned in this specification are based on the orientation of the underground conveyor belt leveling device of this utility model when it is working normally. They do not limit the orientation during storage and transportation, and only represent relative positional relationships, not absolute positional relationships.

[0023] like Figure 1 and Figure 2 As shown in the figure, a downhole conveyor belt leveling device includes a base frame 1, a bracket 2 that is slidably mounted on the base frame 1, a drive device for driving the bracket 2 to rise and fall, and a locking structure.

[0024] The base frame 1 can be inserted into the bottom of the belt conveyor 6 to provide a stable support foundation for the entire leveling device and ensure the stability of the device during the leveling process.

[0025] The base frame 1 includes a support plate 11 and a base plate 12 arranged vertically. The support plate 11 and the base plate 12 are fixedly connected by four support legs 13, which are located at the four corners of the support plate 11 and the base plate 12. The bracket 2 is slidably mounted on the support plate 11, and the base plate 12 lies flat on the ground. The base plate 12 increases the contact area with the ground, thereby increasing the stress area during lifting and preventing the device from sinking.

[0026] The bracket 2 can be supported on the longitudinal beam of the conveyor. The height of the belt frame can be adjusted by raising and lowering the bracket 2, thereby achieving the leveling of the belt frame.

[0027] The bracket 2 includes a support block 21 and sliding columns 22 disposed at the bottom of the support block 21. The support block 21 includes a support block body with an upward-facing groove 211. The longitudinal beam 61 of the conveyor can be inserted into the groove 211. Through the cooperation between the groove 211 and the longitudinal beam, the bracket 2 can stably support the longitudinal beam 61. To facilitate the insertion of the longitudinal beam 61 of the conveyor, chamfers 212 are provided on both sides of the groove opening of the groove 211. Multiple sliding columns 22 are provided, symmetrically arranged on both sides of the bottom of the support block 21; in this embodiment, two sliding columns 22 are provided. The support plate 11 is provided with sliding holes corresponding to the sliding columns 22, and the sliding columns 22 can slide up and down in the sliding holes. This structure ensures the stability of the bracket 2 during the lifting process and avoids shaking or deviation.

[0028] The driving device includes a pry bar 3 hinged to the support plate 11 in the middle. The front end of the pry bar 3 extends into the bottom of the support block 21, and the free end of the tail end of the pry bar 3 can be pressed down by a person. When the operator presses down on the tail end of the pry bar 3, according to the lever principle, the front end of the pry bar 3 will lift up, thereby pushing the support 2 to rise and realizing the leveling operation of the belt frame. In order to reasonably distribute the torque, in this embodiment, the ratio of the front end to the rear end of the pry bar 3 is preferably no greater than 1:3.

[0029] To reduce the friction between the front end of the pry bar 3 and the bracket 2, making the operation easier, a roller 31 is rotatably installed at the end of the pry bar 3 that extends into the bottom of the bracket 2, and the roller 31 makes rolling contact with the bottom of the bracket 2.

[0030] like Figure 3 As shown, further, the bottom of the bracket 2 is provided with a downwardly protruding roller track 213, and the wheel surface of the support roller 31 is provided with a groove 311 corresponding to the roller track 213. The roller track 213 is engaged in the groove 311, and the support roller 31 rolls along the roller track 213. This design can ensure that the support roller 31 will not deviate during the rolling process, further improving the stability and reliability of the drive device.

[0031] The locking structure includes a mounting bracket 4 fixed above the base frame 1 and a screw 41 screwed onto the mounting bracket 4. The mounting bracket 4 has a threaded hole through which the screw 41 passes. The bottom of the screw 41 passes through the mounting bracket 4 and rests against the upper surface of the pry bar 3. A handwheel 42 is fixed to the top of the screw 41. When the bracket 2 is adjusted to the appropriate height, rotating the handwheel 42 moves the screw 41 downward and against the upper surface of the pry bar 3, thereby locking the position of the pry bar 3 and preventing the bracket 2 from falling due to external force, ensuring the stability of the belt frame height after leveling.

[0032] Furthermore, to further increase the torque and reduce the difficulty of prying, a slot 32 is provided at the free end of the pry bar 3, into which an extension rod 33 can be inserted. The slot 32 and the extension rod 33 are detachably and securely connected by connecting bolts, facilitating the installation and removal of the extension rod 33.

[0033] like Figure 4 , Figure 5 and Figure 6 As shown in the figure, the working process of the downhole conveyor belt leveling device of this utility model is as follows:

[0034] like Figure 4 As shown, in the initial state, the handwheel 42 rotates, causing the screw 41 to rise to its highest point. The free end of the pry bar 3 tilts upward, at which point the support roller 31 descends to its lowest height, and the support block 21 descends to its lowest height, thus facilitating the smooth insertion of the support block 21 into the bottom of the longitudinal beam 61.

[0035] In the first working state, such as Figure 5 As shown, once in position, press down on the free end of the tail of the pry bar 3. At this time, the support roller 31 slowly rises until the longitudinal beam 61 of the conveyor can be inserted into the slot 211.

[0036] In the second working state, such as Figure 6 As shown, continue pressing down on the free end of the tail of the pry bar 3. At this time, the support roller 31 continues to rise until the longitudinal beam 61 of the conveyor is raised to a certain height. Then rotate the handwheel 42 to move the screw 41 downward and abut against the upper surface of the pry bar 3, thereby locking the position of the pry bar 3. Then, the feet of the belt conveyor 6 can be raised.

[0037] This invention utilizes a lever principle to drive the lifting and lowering of the support frame 2. A single person can raise the support frame 2 by pressing down on the tail of the pry bar 3, significantly reducing labor intensity and improving operational efficiency. Another person can rotate the handwheel 42, locking the position of the pry bar 3 through a locking structure, ensuring the stability of the belt conveyor height after leveling and effectively guaranteeing leveling accuracy. The support frame 2 and the base frame 1 achieve smooth lifting and lowering through the cooperation of the sliding column 22 and sliding hole. The front end of the pry bar 3 and the support frame 2 reduce friction through the cooperation of the support roller 31 and roller conveyor 213. The entire device has a stable structure and reliable operation. The design allowing the insertion of an extension rod 33 at the tail of the pry bar 3 enables the device to adapt to different underground spatial environments, facilitating leveling operations for the operator.

[0038] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A leveling device for an underground conveyor belt, characterized in that: It includes a base frame, a bracket that slides vertically on the base frame, a drive device for driving the bracket to rise and fall, and a locking structure; The base frame can be inserted into the bottom of the belt conveyor; The bracket can be supported on the longitudinal beam of the conveyor; The drive device includes a pry bar hinged in the middle to the base frame, the front end of the pry bar extending into the bottom of the bracket, and the free end of the tail of the pry bar being able to be pressed down by a human body. The locking structure includes a mounting bracket fixed above the base frame and a screw threaded onto the mounting bracket. The bottom of the screw thread passes through the mounting bracket and abuts against the upper surface of the pry bar. A handwheel is fixed to the top of the screw thread.

2. The downhole conveyor belt leveling device according to claim 1, characterized in that: The bracket includes a support block and a sliding column disposed at the bottom of the support block; The support block includes a support block body, and the support block body is provided with an upward-facing support groove, into which the longitudinal beam of the conveyor can be inserted; The slide column is provided in multiple forms, and the multiple slide columns are symmetrically arranged on both sides of the bottom of the support block; The base frame is provided with sliding holes corresponding to the sliding column, and the sliding column can slide up and down in the sliding holes.

3. The downhole conveyor belt leveling device according to claim 2, characterized in that: The slot opening of the bracket has chamfers on both sides.

4. The downhole conveyor belt leveling device according to claim 1, characterized in that: The front end of the pry bar extends into the bottom of the bracket and is rotatably mounted with a roller, which makes rolling contact with the bottom of the bracket.

5. A downhole belt rack levelling device according to claim 4, characterised in that: The bottom of the bracket is provided with a downwardly protruding roller track, and the wheel surface of the support roller is provided with a groove corresponding to the roller track. The roller track is engaged in the groove, and the support roller rolls along the roller track.

6. A downhole belt rack leveling device according to claim 1, characterized in that: The free end of the pry bar is provided with a slot into which an extension rod can be inserted.

7. A downhole conveyor belt leveling device according to claim 6, characterized in that: The slot and the extension rod are detachably and fixedly connected by connecting bolts.

8. The downhole conveyor belt leveling device according to claim 1, characterized in that: The ratio of the front end to the rear end of the crowbar is no greater than 1:3.

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