Rock drill support with buffering function

Abstract

The utility model discloses a rock drill support with a buffering function, which relates to the technical field of rock drill supports and comprises a support body and spring seats, the support body is composed of a front support and a rear support, a buffering spring is fixedly connected onto one spring seat, a fixing pipe is sleeved on the outer side of the buffering spring and is fixed on the adjacent spring seat, and the spring seat is fixed on the support body. The fixing pipe is arranged on the outer side of the buffer spring in a sleeved mode, the movable blocks are movably connected to the inner wall of the fixing pipe, and the resistance springs are arranged between the movable blocks and the fixing pipe, so that when the support vibrates to enable the fixing rod to compress the buffer spring, the buffer spring generates potential energy; when the fixed rod loosens the buffer spring, the buffer spring can release potential energy to reversely push the moving block to move, the moving block is blocked through the moving block and the resistance spring, so that the moving block is separated from the fixed rod, and the potential energy of the buffer spring cannot be transmitted to the support through the fixed rod.

Description

Technical Field

[0001] This utility model relates to the field of rock drill support technology, specifically a rock drill support with a buffer function. Background Technology

[0002] A rock drill is a tool used to directly extract stone. It drills holes in rock strata to insert explosives and blast the rock, thus completing the extraction of stone or other rock excavation work. In addition, rock drills can also be modified into breakers to crush hard layers such as concrete.

[0003] The prior art, disclosed in CN201412153Y, describes a rock drill support equipped with a buffer spring. This device uses the buffer spring for cushioning during use. However, its structure is simple, relying solely on the spring for cushioning. The spring and support are directly connected via a spring seat, a front connecting device, and a rear connecting device. During the cushioning process, the buffer spring is compressed and deformed, accumulating potential energy. When the spring recovers, the released potential energy is directly transmitted to the support, causing it to vibrate and making the vibration stronger. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of existing technology where buffer springs cause the support to vibrate, and to provide a rock drill support with a buffer function.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a rock drill support with a buffer function, comprising a support body composed of a front support and a rear support, wherein a buffer device is provided on the support body, the buffer device comprising a front connecting device, a buffer spring and a rear connecting device, the front connecting device and the rear connecting device being respectively inserted into through holes on the front support and the rear support, both ends of the buffer spring being connected to spring seats, and the two spring seats being respectively fixed on the front connecting device and the rear connecting device, the buffer spring being fixedly connected to one spring seat, a fixing tube being sleeved on the outside of the buffer spring, and the fixing tube being fixed on an adjacent spring seat, a fixing rod being fixedly connected to the other spring seat, and the fixing rod being inserted into the fixing tube, a moving block being provided between the buffer spring and the fixing rod, the fixing rod being in contact with the moving block, the moving block being fixedly connected to the buffer spring, and a plurality of movable blocks being provided on the inner wall of the fixing tube, and resistance springs being connected between the movable blocks and the inner wall of the fixing tube.

[0006] As described above, a slot is provided on the inner wall of the fixed tube, and several movable blocks are movably connected in the slot. Each of the movable blocks is an equilateral triangle, and one corner of the movable block extends out of the slot.

[0007] As described above, the resistance spring is fixedly connected in the slot, and a limiting rod is provided on the inner side of the resistance spring, with the end of the limiting rod abutting against the movable block.

[0008] As described above, the slot has a through hole, the limiting rod passes through the through hole, and both ends of the limiting rod are fixedly connected to limiting blocks. Both the limiting rod and the through hole are inclined away from the fixed rod.

[0009] The aforementioned movable blocks are divided into two groups, with the two groups of movable blocks symmetrically arranged at the top and bottom of the second fixed tube, respectively. The movable blocks in each group are distributed in a linear array along the axial direction of the second fixed tube.

[0010] As mentioned above, each of the aforementioned movable blocks is hollow, and a counterweight is fixedly connected to the bottom of the inner cavity of each movable block.

[0011] The aforementioned fixed tube is composed of two semi-circular cross-section arc plates joined together, with clamps fitted between the two arc plates near both ends, and one of the arc plates is fixedly connected to the spring seat.

[0012] Compared with the prior art, this rock drill support with buffer function has the following beneficial effects: This utility model has a fixed tube sleeved on the outside of the buffer spring, and several movable blocks are movably connected to the inner wall of the fixed tube. A resistance spring is provided between the movable blocks and the fixed tube. When the support vibrates and the fixed rod compresses the buffer spring, the buffer spring generates potential energy. When the fixed rod releases the buffer spring, the buffer spring releases potential energy and pushes the movable block to move in the opposite direction. The movable block and the resistance spring block the movable block, so that the movable block separates from the fixed rod. In this way, the potential energy of the buffer spring will not be transferred to the support through the fixed rod.

[0013] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of the present invention;

[0016] Figure 3 This is a schematic diagram of the movable block structure of this utility model;

[0017] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Support body; 2. Spring seat; 3. Fixing tube; 4. Fixing rod; 5. Buffer spring; 6. Moving block; 7. Movable block; 8. Limiting rod; 9. Counterweight; 10. Resistance spring. Detailed Implementation

[0019] 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.

[0020] like Figure 1-4 As shown, this utility model provides a technical solution: a rock drill support with a buffer function, including a support body 1 composed of a front support and a rear support. A buffer device is provided on the support body 1. The buffer device includes a front connecting device, a buffer spring 5 and a rear connecting device. The front connecting device and the rear connecting device are respectively inserted into the through holes on the front support and the rear support. Both ends of the buffer spring 5 are connected to spring seats 2, and the two spring seats 2 are respectively fixed on the front connecting device and the rear connecting device. The buffer spring 5 is fixedly connected to one spring seat 2. A fixing tube 3 is sleeved on the outside of the buffer spring 5, and the fixing tube 3 is fixed on the adjacent spring seat 2. A fixing rod 4 is fixedly connected to the other spring seat 2, and the fixing rod 4 is inserted into the fixing tube 3. A moving block 6 is provided between the buffer spring 5 and the fixing rod 4. The fixing rod 4 and the moving block 6 are in contact. The moving block 6 is fixedly connected to the buffer spring 5. A plurality of movable blocks 7 are provided on the inner wall of the fixing tube 3, and a resistance spring 10 is connected between the movable block 7 and the inner wall of the fixing tube 3.

[0021] According to the overall structure of the device, when the support body 1 vibrates, the front and rear connecting devices and the spring seat 2 drive the fixed rod 4 and the fixed tube 3 to vibrate together, causing the fixed tube 3 and the fixed rod 4 to extend and retract. When the fixed rod 4 moves toward the fixed tube 3, the moving block 6 squeezes the buffer spring 5. The buffer spring 5 resists the force generated by the vibration through its reverse elastic force, thus buffering the vibration and accumulating potential energy. When the fixed rod 4 moves away from the fixed tube 3, the buffer spring 5 returns to its original deformation. At this time, the potential energy is released and pushes the moving block 6 to move in the opposite direction to the fixed rod 4. However, the moving block 6 is hindered by the movable block 7 and the resistance spring 10, causing the moving block 6 to separate from the fixed rod 4, thus preventing the potential energy from being transferred to the support body 1 and causing the support to vibrate more.

[0022] like Figure 2 , 4As shown, a slot is provided on the inner wall of the second fixed tube 3, and several movable blocks 7 are movably connected in the slot. The movable blocks 7 are all equilateral triangles, and one corner of the movable block 7 extends out of the slot. The resistance spring 10 is fixedly connected in the slot, and a limiting rod 8 is provided on the inner side of the resistance spring 10. The end of the limiting rod 8 abuts against the movable block 7. A through hole is provided on the slot, and the limiting rod 8 passes through the through hole. Both ends of the limiting rod 8 are fixedly connected to limiting blocks. The limiting rod 8 and the through hole are inclined away from the fixed rod 4.

[0023] The movable block 7 and the resistance spring 10 hinder the reverse movement of the movable block 6. When the movable block 7 compresses the buffer spring 5 under the action of the fixed rod 4, the movable block 6 can push the movable block 7 to flip when it moves. At this time, the direction of the movable block 7 flips away from the resistance spring 10, and the movable block 7 can move smoothly. When the movable block 7 moves in the opposite direction under the action of the elastic force of the buffer spring 5, the movable block 6 pushes the movable block 7 to flip. At this time, the direction of the movable block 7 flips towards the resistance spring 10 and squeezes the resistance spring 10, thereby blocking the movement of the movable block 6 under the action of the resistance spring 10, so that the movable block 6 separates from the fixed rod 4, preventing the potential energy of the buffer spring 5 from being transferred to the bracket body 1 through the fixed rod 4, the spring seat 2 and the rear connecting device. The triangular movable block 7 allows the movable block 6 to be pushed to flip in both directions when it moves. The resistance spring 10 is limited by the limiting rod 8 to prevent it from deflecting. The limiting block prevents the limiting rod 8 from falling out of the perforation.

[0024] like Figure 2 As shown, several movable blocks 7 are divided into two groups. The two groups of movable blocks 7 are symmetrically arranged at the top and bottom of the second fixed tube 3, respectively. The movable blocks 7 in each group are distributed in a linear array along the axial direction of the second fixed tube 3.

[0025] The moving block 6 is stably hindered by two sets of symmetrically distributed movable blocks 7, preventing the moving block 6 from deflecting due to uneven force. The linear array of movable blocks 7 can continuously hinder the movement of the moving block 6.

[0026] like Figure 3 As shown, several movable blocks 7 are hollow, and counterweights 9 are fixedly connected to the bottom of the inner cavity of several movable blocks 7.

[0027] The counterweight 9 enables the movable block 7 to automatically reset. During the compression of the buffer spring 5 by the moving block 6, the moving block 6 pushes the movable block 7 to flip. At this time, the movable block 7 flips away from the resistance spring 10. After the moving block 6 passes the movable block 7, the movable block 7 can flip back and reset under the action of the counterweight 9, so that one corner protrudes from the slot again.

[0028] like Figure 1As shown, the fixed tube 3 is composed of two semi-circular cross-section arc plates spliced ​​together. A clamp is fitted between the two arc plates near both ends. One of the arc plates is fixedly connected to the spring seat 2.

[0029] The fixed tube 3 is formed by splicing two semi-circular arc plates, which can be disassembled to facilitate the maintenance of the internal buffer spring 5. The clamp facilitates the separation and splicing of the arc plates.

[0030] Working principle: During use, when the support body 1 vibrates, the front and rear connecting devices and the spring seat 2 drive the fixed rod 4 and the fixed tube 3 to vibrate together, causing the fixed tube 3 and the fixed rod 4 to extend and retract. When the fixed rod 4 moves towards the fixed tube 3, the moving block 6 compresses the buffer spring 5. The buffer spring 5 uses its reverse elastic force to resist the force generated by the vibration, thus buffering the vibration and accumulating potential energy. When the fixed rod 4 moves away from the fixed tube 3, the buffer spring 5 returns to its original deformation. At this time, the potential energy is released and pushes the moving block 6 to move in the opposite direction with the fixed rod 4. When the moving block 6 moves in the opposite direction, it pushes the movable block 7 to flip again. At this time, the movable block 7 flips towards the resistance spring 10, thereby compressing the resistance spring 10. The elastic force of the resistance spring 10 resists the pushing force of the moving block 6 on the movable block 7, thus hindering the movement of the moving block 6 and separating the moving block 6 from the fixed rod 4. This prevents the potential energy from being transferred to the support body 1 and causing greater vibration of the support.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rock drill support with a buffer function, comprising a support body (1) composed of a front support and a rear support, wherein a buffer device is provided on the support body (1), the buffer device comprising a front connecting device, a buffer spring (5) and a rear connecting device, the front connecting device and the rear connecting device being respectively inserted into through holes on the front support and the rear support, and both ends of the buffer spring (5) being connected to spring seats (2), and the two spring seats (2) being respectively fixed on the front connecting device and the rear connecting device, characterized in that: The buffer spring (5) is fixedly connected to a spring seat (2). A fixed tube (3) is sleeved on the outside of the buffer spring (5), and the fixed tube (3) is fixed on an adjacent spring seat (2). A fixed rod (4) is fixedly connected to another spring seat (2), and the fixed rod (4) is inserted into the fixed tube (3). A moving block (6) is provided between the buffer spring (5) and the fixed rod (4). The fixed rod (4) and the moving block (6) are in contact. The moving block (6) is fixedly connected to the buffer spring (5). Several movable blocks (7) are provided on the inner wall of the fixed tube (3), and a resistance spring (10) is connected between the movable block (7) and the inner wall of the fixed tube (3).

2. The rock drill support with buffer function according to claim 1, characterized in that: The inner wall of the fixed tube (3) is provided with a slot, and several movable blocks (7) are movably connected in the slot. The several movable blocks (7) are all equilateral triangles, and one corner of the movable block (7) extends out of the slot.

3. A rock drill support with buffer function according to claim 1, characterized in that: The resistance spring (10) is fixedly connected in the slot, and a limiting rod (8) is provided on the inner side of the resistance spring (10), with the end of the limiting rod (8) abutting against the movable block (7).

4. A rock drill support with buffer function according to claim 3, characterized in that: The slot has a through hole, the limiting rod (8) passes through the through hole, and both ends of the limiting rod (8) are fixedly connected to limiting blocks. The limiting rod (8) and the through hole are both inclined away from the fixed rod (4).

5. A rock drill support with buffer function according to claim 1, characterized in that: Several movable blocks (7) are divided into two groups. The two groups of movable blocks (7) are symmetrically arranged at the top and bottom of the second fixed tube (3), and the movable blocks (7) in each group are distributed in a linear array along the axis of the second fixed tube (3).

6. A rock drill support with buffer function according to claim 1, characterized in that: Each of the movable blocks (7) is hollow, and a counterweight (9) is fixedly connected to the bottom of the inner cavity of each of the movable blocks (7).

7. A rock drill support with buffer function according to claim 1, characterized in that: The fixed tube (3) is composed of two semi-circular cross-section arc plates spliced ​​together. A clamp is fitted between the two arc plates near both ends. One of the arc plates is fixedly connected to the spring seat (2).

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