Coal mining machine cutting pick with good sealing performance

Abstract

The utility model discloses a coal mining machine cutting pick with good sealing performance in the technical field of coal mining and roadway tunneling equipment, which comprises a pick top and a pick body, a mounting rod is integrally formed at the bottom of the pick top, a slot corresponding to the mounting rod is formed in the center of the top end of the pick body, and the pick top is detachably connected with the pick body; the top end of the tooth body is connected with a pressing plate through a spring, a sleeve arranged on the outer ring of the tooth body in a sleeving mode is integrally formed on the outer ring of the pressing plate, a fixing ring used for supporting the bottom of the pressing plate is integrally formed on the top of the tooth body, and penetrating holes allowing the mounting rod to penetrate through are formed in the center of the fixing ring and the center of the pressing plate. The cutting pick solves the problems that when an existing cutting pick is used, the tip part of the cutting pick is prone to being damaged, the whole cutting pick needs to be replaced after the tip part is damaged, the overall maintenance cost of equipment is high, and the cutting pick is not beneficial for people to use.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mining and tunnel excavation equipment, in particular to a coal mining machine pick with good sealing performance. Background Art

[0002] The pick is one of the vulnerable parts in coal mining and tunnel excavation machinery. It is the main tool for dropping and crushing coal. Its performance directly affects the production capacity of coal mining machinery, power consumption, working stability and the service life of other related parts.

[0003] The tip of the existing pick is easily damaged during use, and the entire pick needs to be replaced after the tip is damaged, which makes the overall maintenance cost of the equipment high and is not conducive to people's use. Therefore, technical personnel in this field provide a coal mining machine pick with good sealing performance to solve the problems raised in the above background technology. Utility Model Content

[0004] The utility model aims to provide a coal mining machine pick with good sealing performance to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the utility model provides the following technical solutions: a coal mining machine pick with good sealing performance, comprising a tooth tip and a tooth body, the bottom of the tooth tip is integrally formed with a mounting rod, a slot corresponding to the mounting rod is opened at the center of the top of the tooth body, and the tooth tip and the tooth body are detachably connected;

[0006] The top of the tooth body is connected to a pressure plate through a spring. The outer ring of the pressure plate is integrally formed with a sleeve sleeved on the outer ring of the tooth body. The top of the tooth body is integrally formed with a fixing ring for supporting the bottom of the pressure plate. The center of the fixing ring and the pressure plate are both provided with through holes for the installation rod to pass through.

[0007] Preferably, the inside of the tooth tip and the tooth body are provided with a plurality of mounting holes arranged equidistantly around the slot, and the tooth tip and the tooth body are detachably connected by a plurality of bolts threadedly connected to the inside of the mounting holes.

[0008] Preferably: a positioning ring is provided at the bottom of the pressure plate, a groove corresponding to the positioning ring is provided at the top of the fixing ring, a rubber sealing pad is provided at the bottom of the inner cavity of the groove, and a mounting hole adapted to the bolt is provided inside the positioning ring.

[0009] Preferably: the tooth tip includes an integrally formed tip portion and a connecting plate, the outer ring of the tip portion is provided with multiple groups of accommodating grooves for bolt installation, the interior of the connecting plate is provided with mounting holes adapted to the bolts, and the bottom of the connecting plate is integrally formed with the top of the mounting rod.

[0010] Preferably, the inner wall of the slot and the inner ring of the fixing ring are integrally formed with a plurality of limit strips, and the outer ring of the mounting rod is provided with a plurality of limit grooves corresponding to the limit strips.

[0011] Preferably, the inner wall of the sleeve is provided with a plurality of positioning strips equidistantly arranged in a circle around its axis, and the outer ring of the tooth body is provided with a plurality of sliding grooves for the positioning strips to slide up and down.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. In the utility model, the tooth tip and the tooth body are detachably connected, so that the damaged tooth tip can be replaced separately. By setting a pressure plate and a spring, the tooth tip can press the pressure plate and the spring during installation. The spring can provide auxiliary elastic force for the connection after the tooth tip and the tooth body are installed, thereby improving the tightness of the connection between the tooth tip and the tooth body.

[0014] 2. In the utility model, by providing a sleeve, sealing protection can be provided for the connection between the tooth ring and the tooth body and the spring. By providing a limit strip and a limit groove, the alignment of the mounting holes when assembling the tooth tip and the tooth body can be facilitated. By providing a rubber sealing gasket with a supporting positioning ring inside the fixing ring, the sealing and stability of the bolt connection can be further improved, and the rust of the bolts caused by long-term use can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 It is a cross-sectional view of the tooth body structure of the utility model;

[0017] Figure 3 It is a cross-sectional view of the sleeve structure of the utility model;

[0018] Figure 4 For this utility model Figure 2 A is an enlarged view of the middle image.

[0019] In the figure: 1. tooth body; 2. mounting rod; 3. slot; 4. spring; 5. pressure plate; 6. sleeve; 7. fixing ring; 9. bolt; 10. positioning ring; 11. groove; 12. rubber sealing gasket; 14. tip; 15. connecting plate; 16. accommodating groove; 17. limiting strip; 18. limiting groove; 19. positioning strip; 20. slide groove. DETAILED DESCRIPTION

[0020] 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.

[0021] See also Figure 1 to Figure 4 In an embodiment of the utility model, a coal mining machine pick with good sealing performance includes a tooth tip and a tooth body 1, a mounting rod 2 is integrally formed at the bottom of the tooth tip, a slot 3 corresponding to the mounting rod 2 is opened at the center of the top of the tooth body 1, the tooth tip and the tooth body 1 are detachably connected, the top of the tooth body 1 is connected to a pressure plate 5 through a spring 4, the outer ring of the pressure plate 5 is integrally formed with a sleeve 6 sleeved on the outer ring of the tooth body 1, and a fixing ring 7 for supporting the bottom of the pressure plate 5 is integrally formed at the top of the tooth body 1, and a through hole for the mounting rod 2 to pass through is opened at the center of the fixing ring 7 and the pressure plate 5.

[0022] During the assembly of the tooth tip and the tooth body 1, the mounting rod 2 connected to the bottom of the tooth tip is inserted into the inside of the slot 3. The tooth tip can drive the pressure plate 5 to move when pressing down on the top of the tooth body 1. The pressure plate 5 can drive the spring 4 to expand and contract. After the pressure plate 5 is pressed to contact the top of the fixing ring 7, the tooth tip and the tooth body 1 are fixedly connected by means of a component. The spring 4 provides elastic force for the installed tooth tip, which can improve the stability of the tooth tip installation. A sleeve 6 is provided at the bottom of the pressure plate 5, which can provide good sealing protection for the spring 4, thereby facilitating the improvement of the service life of the component.

[0023] Among them, the inside of the tooth tip and the tooth body 1 are provided with multiple groups of mounting holes arranged equidistantly around the slot 3. The tooth tip and the tooth body 1 are detachably connected by multiple groups of bolts 9 threadedly connected to the inside of the mounting holes. The bolts 9 are used to achieve fixed installation of the tooth tip and the tooth body 1. The spring 4 provides elastic force for the pressure plate 5 and the tooth tip, which can increase the friction force at the threaded connection of the bolt 9, thereby improving the stability of the connection between the tooth tip and the tooth body 1. The sleeve 6 can provide sealing for the installation of the bolt 9 and reduce rust on the bolt 9.

[0024] In one embodiment, a positioning ring 10 is provided at the bottom of the pressure plate 5, a groove 11 corresponding to the positioning ring 10 is provided at the top of the fixing ring 7, a rubber sealing gasket 12 is provided at the bottom of the inner cavity of the groove 11, and a mounting hole compatible with the bolt 9 is provided inside the positioning ring 10. The movement of the tooth tip drives the pressure plate 5 to move, and the pressure plate 5 can snap the positioning ring 10 into the groove 11 of the fixing ring 7. The positioning ring 10 and the fixing ring 7 can enhance the lateral support of the bolt 9 connection, and the rubber sealing gasket 12 can further enhance the sealing tightness of the bolt 9 connection.

[0025] The tooth tip includes an integrally formed tip portion 14 and a connecting plate 15. The outer ring of the tip portion 14 is provided with a plurality of accommodating grooves 16 for installing bolts 9, which can facilitate the installation of the bolts 9 in the tip portion 14. The interior of the connecting plate 15 is provided with mounting holes compatible with the bolts 9. The bottom of the connecting plate 15 is integrally formed with the top of the mounting rod 2, and the connecting plate 15 can facilitate the installation of the entire tooth tip.

[0026] The inner wall of the slot 3 and the inner ring of the fixing ring 7 are integrally formed with multiple sets of limit strips 17, and the outer ring of the mounting rod 2 is provided with multiple sets of limit grooves 18 corresponding to the limit strips 17. When the mounting rod 2 is inserted into the interior of the slot 3, the limit strips 17 are installed at the position corresponding to the limit grooves 18, which can facilitate the alignment of the tooth tip and the mounting hole on the pressure plate 5.

[0027] The inner wall of the casing 6 is installed with multiple groups of positioning strips 19 arranged equidistantly in a circle around its axis, and the outer ring of the tooth body 1 is provided with multiple groups of sliding grooves 20 for the positioning strips 19 to slide up and down. The positioning strips 19 are slidably installed in the sliding grooves 20, which can limit the up and down movement of the casing 6, prevent the casing 6 from driving the pressure plate 5 and other components to rotate, and improve the overall strength of the coal mining machine pick.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A coal mining machine pick with good sealing performance, comprising a tooth tip and a tooth body (1), characterized in that: The bottom of the tooth tip is integrally formed with a mounting rod (2), and a slot (3) corresponding to the mounting rod (2) is provided at the center of the top end of the tooth body (1), and the tooth tip and the tooth body (1) are detachably connected; The top of the tooth body (1) is connected to a pressure plate (5) via a spring (4); the outer ring of the pressure plate (5) is integrally formed with a sleeve (6) sleeved on the outer ring of the tooth body (1); the top of the tooth body (1) is integrally formed with a fixing ring (7) for supporting the bottom of the pressure plate (5); the center of the fixing ring (7) and the pressure plate (5) are both provided with a through hole for the installation rod (2) to pass through.

2. A coal mining machine pick with good sealing performance according to claim 1, characterized in that: The tooth tip and the tooth body (1) are provided with a plurality of groups of mounting holes arranged equidistantly around the slot (3), and the tooth tip and the tooth body (1) are detachably connected via a plurality of groups of bolts (9) threadedly connected to the inside of the mounting holes.

3. A coal mining machine pick with good sealing performance according to claim 2, characterized in that: A positioning ring (10) is provided at the bottom of the pressure plate (5), a groove (11) corresponding to the positioning ring (10) is provided at the top of the fixing ring (7), a rubber sealing pad (12) is provided at the bottom of the inner cavity of the groove (11), and a mounting hole compatible with the bolt (9) is provided inside the positioning ring (10).

4. A coal mining machine pick with good sealing performance according to claim 2, characterized in that: The tooth tip comprises an integrally formed tip portion (14) and a connecting plate (15); the outer ring of the tip portion (14) is provided with a plurality of groups of receiving grooves (16) for installing bolts (9); the interior of the connecting plate (15) is provided with mounting holes adapted to the bolts (9); the bottom of the connecting plate (15) is integrally formed with the top of the mounting rod (2).

5. A coal mining machine pick with good sealing performance according to claim 4, characterized in that: The inner wall of the slot (3) and the inner ring of the fixing ring (7) are integrally formed with a plurality of limit strips (17), and the outer ring of the mounting rod (2) is provided with a plurality of limit grooves (18) corresponding to the limit strips (17).

6. A coal mining machine pick with good sealing performance according to claim 1, characterized in that: The inner wall of the sleeve (6) is provided with a plurality of positioning strips (19) equidistantly arranged in a circumference around its axis, and the outer ring of the tooth body (1) is provided with a plurality of sliding grooves (20) for the positioning strips (19) to slide up and down.

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