Hammer handle pin shaft structure of coal crusher

Abstract

The utility model belongs to the technical field of pin shaft structures, and particularly relates to a hammer handle pin shaft structure of a coal crusher, which comprises a pin shaft body, a threaded hole is formed in one side face of the pin shaft body, a lead screw is connected into the threaded hole in a threaded mode, and one end of the lead screw extends out of the threaded hole and is fixedly connected with a mounting block. Through cooperation of the threaded holes, the lead screws and the mounting blocks, acting force can be conveniently applied to the pin shaft body, outward stretching force is applied to the pin shaft body, and the pin shaft body can be conveniently pulled out, that is, when the pin shaft body needs to be replaced, threaded holes can be turned in the two ends of the pin shaft body through a thread lathe, and then the lead screws matched with the threaded holes can be rotated into the threaded holes; the pin shaft body can be pulled out by applying acting force to the mounting block, so that the problem that the pin shaft is easy to block and difficult to take out under the conditions of abrasion and corrosion is solved, the difficulty of taking out the pin shaft is reduced, the difficulty of replacing and overhauling work of the hammer handle of the hammer head of the coal crusher is reduced, and the overhauling time is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of pin shaft structures, in particular to a pin shaft structure for a hammer handle of a coal crusher. Background Art

[0002] Coal crusher is an indispensable equipment for the coal industry to meet the particle size requirements. The pin of the coal crusher is fixed on the coal crusher's rotor and drives the hammer handle to rotate at high speed as the rotor rotates. The pin needs to be replaced regularly.

[0003] The wear of the pin shaft due to high-speed rotation is inevitable, and the clearance of the pin shaft for penetrating into the rotating wheel is small. Long-term corrosion makes it difficult to remove the pin shaft when replacing the pin shaft. Therefore, a pin shaft structure of the hammer handle of a coal crusher is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology and solve the problem that the wear of the pin shaft due to high-speed rotation is inevitable, and the gap between the pin shaft and the rotating shaft is small, and long-term corrosion makes it difficult to remove the pin shaft when replacing the pin shaft, a coal crusher hammer handle pin shaft structure is proposed.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a coal crusher hammer handle pin shaft structure described in the utility model includes a pin shaft body; a threaded hole is opened on one side of the pin shaft body, a screw rod is threadedly connected to the threaded hole, one end of the screw rod extends out of the threaded hole and is fixedly connected to a mounting block, and through the cooperation of the threaded hole, the screw rod and the mounting block, it is convenient to apply a force to the pin shaft body, giving it an outward stretching force, so as to facilitate pulling out the pin shaft body.

[0006] Preferably, the mounting block is fixedly connected to an end away from the screw rod with a connecting rod, and the connecting rod is configured as a steel bar. The configuration of the connecting rod facilitates the mounting block to apply a force to the pin body, thereby avoiding the pin body and the mounting block being in a deep position where it is inconvenient to apply a force.

[0007] Preferably, one end of the connecting rod away from the mounting block is fixedly connected to a transmission rod, and the outer wall of the transmission rod is provided with a wear-resistant layer. The setting of the transmission rod facilitates the use in conjunction with the connecting rod and avoids slipping when pulling the connecting rod.

[0008] Preferably, the outer wall of the connecting rod is slidably connected with a sleeve, and the outer wall of the sleeve is provided with anti-slip grooves. Through the setting of the sleeve, the sleeve can be driven to reciprocate on the connecting rod and hit the transmission rod to give the pin shaft body an outward stretching force, thereby improving the efficiency of removing the pin shaft body.

[0009] Preferably, the outer wall of the connecting rod is slidably connected with a transmission ring, and the transmission ring is provided with two groups, and the two groups of transmission rings are fixedly connected by a connecting plate. A slot is provided on one side of the outer wall of the transmission ring. Through the arrangement of the transmission ring, the connecting plate and the slot, the sleeve can be driven to move back and forth, avoiding the need for multiple sets of driving equipment to ensure that the sleeve can move back and forth.

[0010] Preferably, a blocking block is slidably connected in the slot, and one end of the blocking block is elastically connected to the inner wall of the slot via a spring. By setting the blocking block and the spring, the slot can be blocked when the sleeve is not in use to prevent dust and debris from accumulating in the slot, blocking the slot and affecting the insertion of the drive device end.

[0011] Preferably, the inner diameter of the transmission ring is larger than the diameter of the mounting block, and the inner diameter of the sleeve is larger than the diameter of the mounting block. By making the inner diameter of the transmission ring larger than the diameter of the mounting block, and the inner diameter of the sleeve larger than the diameter of the mounting block, when the screw rod or the mounting block is damaged, the transmission ring and the sleeve can be removed and reused, thereby reducing maintenance costs.

[0012] Beneficial effects of the utility model:

[0013] 1. The utility model provides a pin shaft structure of a hammer handle of a coal crusher. Through the cooperation of a threaded hole, a screw rod and a mounting block, it is convenient to apply a force to the pin shaft body, giving it an outward stretching force, so as to facilitate pulling out the pin shaft body. That is, when the pin shaft body needs to be replaced, threaded holes can be turned at both ends of the pin shaft body by a thread lathe, and then a screw rod matching the threaded hole can be turned into the threaded hole, so that a force can be applied to the mounting block to pull out the pin shaft body.

[0014] 2. The utility model provides a coal crusher hammer handle pin structure. Through the setting of the connecting rod, it is convenient to cooperate with the mounting block to apply force to the pin body, so as to avoid the pin body and the mounting block being in deep and inconvenient to apply force. Through the setting of the transmission rod, it is convenient to cooperate with the connecting rod to avoid slipping when pulling the connecting rod. Through the setting of the sleeve, the sleeve can be driven to reciprocate on the connecting rod and hit the transmission rod to give the pin body an outward stretching force, thereby improving the efficiency of removing the pin body.

[0015] 3. The utility model provides a coal crusher hammer handle pin structure, which can facilitate the reciprocating movement of the driving sleeve through the arrangement of a transmission ring, a connecting plate and a slot, avoiding the need for multiple sets of driving devices to ensure that the sleeve can reciprocate. Through the arrangement of a blocking block and a spring, the slot can be blocked when the sleeve is not in use, avoiding dust and debris from accumulating in the slot, blocking the slot and affecting the insertion of the driving device end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 It is a three-dimensional diagram of the utility model;

[0018] Figure 2 It is a three-dimensional diagram of the pin body in the utility model;

[0019] Figure 3 It is a cross-sectional structural diagram of the pin body in the utility model;

[0020] Figure 4 It is a three-dimensional diagram of the sleeve in the utility model;

[0021] Figure 5 It is a three-dimensional diagram of the transmission ring in the utility model;

[0022] Figure 6 It is a cross-sectional structural diagram of the transmission ring in the utility model.

[0023] Legend:

[0024] 1. Pin body; 2. Threaded hole; 3. Screw rod; 4. Mounting block; 5. Connecting rod; 6. Transmission rod; 7. Sleeve; 8. Transmission ring; 9. Connecting plate; 10. Slot; 11. Blocking block; 12. Spring. DETAILED DESCRIPTION

[0025] 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 of 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.

[0026] Specific examples are given below.

[0027] See also Figure 1-Figure 6The utility model provides a pin shaft structure of a hammer handle of a coal crusher, comprising a pin shaft body 1; a threaded hole 2 is opened on one side of the pin shaft body 1, and a screw rod 3 is connected to the inner thread of the threaded hole 2, and one end of the screw rod 3 extends out of the threaded hole 2 and is fixedly connected to a mounting block 4; during operation, through the cooperation of the threaded hole 2, the screw rod 3 and the mounting block 4, it is convenient to apply a force to the pin shaft body 1, giving it an outward stretching force, so as to facilitate the pulling out of the pin shaft body 1, that is, when the pin shaft body 1 needs to be replaced, the threaded holes 2 can be turned out at both ends of the pin shaft body 1 by a thread lathe, and then the screw rod 3 matching the threaded hole 2 can be turned into the threaded hole 2, and a force can be applied to the mounting block 4 to pull out the pin shaft body 1, so as to solve the problem that the pin shaft is easy to get stuck and difficult to be removed under the condition of wear and rust, reduce the difficulty of removing the pin shaft, and reduce the difficulty and maintenance time for the replacement and maintenance of the hammer head and hammer handle of the coal crusher.

[0028] Further, such as Figure 1 and Figure 4 As shown, the end of the mounting block 4 away from the screw rod 3 is fixedly connected with a connecting rod 5, and the connecting rod 5 is set as a steel bar. During operation, the setting of the connecting rod 5 facilitates the mounting block 4 to apply a force to the pin body 1, so as to avoid the pin body 1 and the mounting block 4 being in a deep position and being inconvenient to apply a force.

[0029] Further, such as Figure 1 and Figure 4 As shown, one end of the connecting rod 5 away from the mounting block 4 is fixedly connected to a transmission rod 6, and a wear-resistant layer is provided on the outer wall of the transmission rod 6. During operation, the transmission rod 6 is provided to facilitate the use of the connecting rod 5 to avoid slipping when the connecting rod 5 is pulled.

[0030] Further, such as Figure 1 and Figure 4 As shown, the outer wall of the connecting rod 5 is slidably connected with a sleeve 7, and the outer wall of the sleeve 7 is provided with anti-slip grooves. During operation, through the setting of the sleeve 7, the sleeve 7 can be driven to reciprocate on the connecting rod 5 and hit the transmission rod 6 to give the pin body 1 an outward stretching force, thereby improving the efficiency of removing the pin body 1.

[0031] Further, such as Figure 1 and Figure 4 As shown, the outer wall of the connecting rod 5 is slidably connected with a transmission ring 8, and two groups of transmission rings 8 are provided, and the two groups of transmission rings 8 are fixedly connected by a connecting plate 9, and a clamping groove 10 is provided on one side of the outer wall of the transmission ring 8. During operation, the arrangement of the transmission ring 8, the connecting plate 9 and the clamping groove 10 can facilitate the driving sleeve 7 to reciprocate, avoiding the need to equip multiple sets of driving devices to ensure that the sleeve 7 can reciprocate.

[0032] Further, such as Figure 5 and Figure 6As shown, a blocking block 11 is slidably connected in the card slot 10, and one end of the blocking block 11 is elastically connected to the inner wall of the card slot 10 through a spring 12. During operation, the card slot 10 can be shielded by the setting of the blocking block 11 and the spring 12 when the sleeve 7 is not in use, so as to prevent dust and debris from accumulating in the card slot 10, blocking the card slot 10, and affecting the insertion of the drive device end.

[0033] Further, such as Figure 5 and Figure 6 As shown, the inner diameter of the transmission ring 8 is larger than the diameter of the mounting block 4, and the inner diameter of the sleeve 7 is larger than the diameter of the mounting block 4. During operation, by making the inner diameter of the transmission ring 8 larger than the diameter of the mounting block 4, and the inner diameter of the sleeve 7 larger than the diameter of the mounting block 4, when the screw rod 3 or the mounting block 4 is damaged, the transmission ring 8 and the sleeve 7 can be removed and reused, thereby reducing maintenance costs.

[0034] Working principle: When the pin body 1 needs to be replaced, threaded holes 2 can be turned at both ends of the pin body 1 by a thread lathe, and then the screw rod 3 matching the threaded hole 2 can be turned into the threaded hole 2, so that a force can be applied to the mounting block 4 to pull out the pin body 1. Through the setting of the connecting rod 5, the mounting block 4 can be used to apply a force to the pin body 1. Through the setting of the transmission rod 6, it can be used in conjunction with the connecting rod 5 to avoid slipping when pulling the connecting rod 5. Through the setting of the sleeve 7, the sleeve 7 can be driven to reciprocate on the connecting rod 5 and hit the transmission rod 6 to give the pin body 1 an outward stretching force, thereby improving the efficiency of removing the pin body 1. Through the setting of the transmission ring 8, the connecting plate 9 and the slot 10, the sleeve 7 can be driven to move back and forth, avoiding the need for multiple sets of driving equipment to ensure that the sleeve 7 can reciprocate. That is, the transmission part of the driving equipment is inserted into the slot 10 to drive the transmission ring 8 and the sleeve 7 to reciprocate in a straight line, and continuously hit the transmission rod 6.

[0035] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A coal crusher hammer handle pin structure, Features: The invention comprises a pin shaft body (1); a threaded hole (2) is provided on one side of the pin shaft body (1); a screw rod (3) is connected to the threaded hole (2); one end of the screw rod (3) extends out of the threaded hole (2) and is fixedly connected to a mounting block (4).

2. A coal crusher hammer handle pin structure according to claim 1, Features: One end of the mounting block (4) away from the screw rod (3) is fixedly connected to a connecting rod (5), and the connecting rod (5) is configured as a steel bar.

3. A coal crusher hammer handle pin structure according to claim 2, Features: One end of the connecting rod (5) away from the mounting block (4) is fixedly connected to a transmission rod (6), and an outer wall of the transmission rod (6) is provided with a wear-resistant layer.

4. A coal crusher hammer handle pin structure according to claim 3, Features: The outer wall of the connecting rod (5) is slidably connected with a sleeve (7), and the outer wall of the sleeve (7) is provided with anti-slip grooves.

5. A coal crusher hammer handle pin structure according to claim 4, Features: The outer wall of the connecting rod (5) is slidably connected with a transmission ring (8), and two groups of transmission rings (8) are provided. The two groups of transmission rings (8) are fixedly connected via a connecting plate (9), and a clamping groove (10) is provided on one side of the outer wall of the transmission ring (8).

6. A coal crusher hammer handle pin structure according to claim 5, Features: A blocking block (11) is slidably connected in the slot (10), and one end of the blocking block (11) is elastically connected to the inner wall of the slot (10) via a spring (12).

7. A coal crusher hammer handle pin structure according to claim 6, Features: The inner diameter of the transmission ring (8) is greater than the diameter of the mounting block (4), and the inner diameter of the sleeve (7) is greater than the diameter of the mounting block (4).

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