Anti-loosening vibration exciter of vibrating screen

Abstract

The utility model provides an anti-loose vibrating screen vibration exciter which comprises a shell, a main shaft, an auxiliary shaft, a belt transmission assembly and a tensioning assembly, the main shaft and the auxiliary shaft are both arranged in the shell, eccentric blocks are both arranged on the main shaft and the auxiliary shaft, the main shaft is connected with the output end of a motor, and the belt transmission assembly is connected with the tensioning assembly. The main shaft and the auxiliary shaft are connected through a belt transmission assembly, a tensioning assembly used for tensioning the belt transmission assembly is arranged in the shell, the tensioning assembly is arranged in the shell through a screw rod, and a lock nut used for fixing the tensioning assembly is arranged on the screw rod. The locknut comprises a nut body, a chuck and an end cover, the chuck is arranged on the end face of the nut body in a surrounding mode around the central axis of the nut body, the chuck is sleeved with the end cover, the end cover is in threaded connection with the nut body, and when the end cover and the nut body are screwed down, the end cover is screwed down. The end cover extrudes the chuck in the direction of the central axis of the nut body.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of exciter, specifically relates to a prevent loosening vibrating screen exciter. BACKGROUND

[0002] The exciter is the key equipment of the vibrating screen, and the commonly used inertial exciter utilizes the motor to drive the eccentric block to rotate, and the vibration generated by the eccentric block rotation drives the vibrating screen to move linearly, thereby realizing the vibration screening.

[0003] The disclosed document CN220092020U discloses a vibrating screen exciter, which comprises two vibrating shafts arranged in parallel, and a basic polarization flywheel and a belt transmission gear are sequentially sleeved on the end portion of each vibrating shaft from inside to outside, and the basic polarization flywheel can synchronously rotate with the vibrating shaft; a transmission belt is arranged between the two belt transmission gears to realize connection and transmission; a side stopper and a polarization mass adjusting block are detachably arranged on the outer side surface of the basic polarization flywheel; a tension adjusting roller is arranged on the outer side of the upper and lower surfaces of the middle portion of the transmission belt; the two tension adjusting rollers are in contact with the upper and lower surfaces of the middle portion of the transmission belt and are arranged on the same bracket; and the bracket is fixedly arranged on the bearing seat. The vibrating screen exciter can flexibly adjust the overall polarization mass according to actual needs to meet different screening requirements; when the side stopper on the outer side is abraded by the surrounding ore particles, the side stopper can be individually disassembled and replaced.

[0004] In the above scheme, the tension adjusting roller is fixed on the bracket through bolts, and the tension adjusting roller tensions the transmission belt, but in actual use, the vibration generated during the working process of the exciter can cause the bolts to loosen, which affects the stability of the tension adjusting roller and makes the tension of the transmission belt unstable, thereby affecting the stability of the belt transmission. UTILITY MODEL CONTENTS

[0005] The utility model discloses to the shortage of prior art, propose a kind of prevent loosening vibrating screen exciter, end cap is set on nut main body, by screwing end cap, make end cap extrude the chuck on nut main body, make chuck clamp screw rod, reach the effect of preventing loosening.

[0006] The utility model provides a kind of anti-loose vibrating screen exciter, including shell, main shaft, auxiliary shaft, belt drive assembly and tensioning assembly, the main shaft and the auxiliary shaft are all arranged in the shell, the main shaft and the auxiliary shaft are all provided with eccentric block, the main shaft is connected motor output end, the main shaft and the auxiliary shaft are connected by belt drive assembly, tensioning assembly is provided in the shell to tension the belt drive assembly, the tensioning assembly is arranged in the shell by screw rod, anti-loose nut for fixing the tensioning assembly is provided on the screw rod, the anti-loose nut includes nut main body, chuck and end cover, the chuck is arranged around the nut main body axis in the nut main body end face, the end cover is sleeved on the chuck, the end cover is threadedly connected with the nut main body, with the end cover and the nut main body tightening, the end cover extrudes the chuck towards the nut main body axis direction.

[0007] The utility model more preferably technical scheme: the nut main body end face is fixedly provided with cylinder, the cylinder is coaxially arranged with the nut main body, the chuck is arranged on the inner wall of the cylinder, external thread is arranged on the outer circular face of the cylinder, and the end cover is threadedly connected with the cylinder.

[0008] The utility model more preferably technical scheme: the chuck is inclined towards the middle part of the cylinder relative to the inner wall of the cylinder, and a wedge-shaped gap is formed between the chuck and the inner wall of the cylinder.

[0009] The utility model more preferably technical scheme: the wedge-shaped space is gradually reduced in the circumferential cross section from the end of the cylinder to the nut main body.

[0010] The utility model more preferably technical scheme: ring platform is arranged on the outer circular face of the cylinder, elastic gasket is arranged on the end face of the ring platform, and the elastic gasket is clamped between the ring platform and the end cover.

[0011] The utility model more preferably technical scheme: the tensioning assembly comprises mounting frame and tensioning wheel, the mounting frame is arranged in the shell, and the tensioning wheel is rotatably arranged on the mounting frame.

[0012] The utility model more preferably technical scheme: waist-shaped hole is formed in the mounting frame, the screw rod is arranged in the waist-shaped hole, and the anti-loose nut is arranged on the screw rod.

[0013] The utility model more preferably technical scheme: the belt drive assembly comprises pulley arranged on the main shaft and the auxiliary shaft respectively, transmission belt is arranged around the two pulleys, and the tensioning wheel abuts against the transmission belt.

[0014] The utility model discloses a better technical scheme: the shell includes front casing and rear casing, the main shaft end part penetrates the rear casing, the main shaft end part is provided with the drive wheel and motor output end transmission connection.

[0015] The utility model discloses a better technical scheme:

[0016] The utility model discloses a kind of anti-loose vibrating screen exciter with the following beneficial effects:

[0017] 1, screw is set with anti-loose nut and is fixed in shell, end cap is connected with nut main body thread, twists end cap, end cap gradually extrudes the chuck on nut main body, chuck moves to the middle part of nut main body under pressure, chuck clamps screw, by the friction between chuck and screw, using force and reaction force, reach anti-loose effect, further stabilize tensioning assembly, ensure the transmission stability of drive assembly in exciter;

[0018] 2, the cylinder of nut main body is provided with ring platform, elastic washer is set on ring platform, elastic washer is clamped between ring platform and end cap, end cap connects nut main body, twists end cap and extrudes elastic washer, elastic washer generates elastic force under pressure, the friction between end cap and nut main body is further strengthened by this elastic force, resistance moment is generated, so as to prevent end cap loosening. BRIEF DESCRIPTION OF DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application. In the drawings, like reference numerals are used to represent similar elements throughout. The accompanying drawings are of some embodiments of the present application and not all embodiments. Other drawings can be derived from these drawings by a person of ordinary skill in the art without paying creative efforts.

[0020] Figure 1 It is the three-dimensional structure schematic diagram of the utility model embodiment.

[0021] Figure 2 It is the split diagram of the utility model embodiment.

[0022] Figure 3 It is the structure schematic diagram of drive assembly in the utility model embodiment.

[0023] Figure 4 It is the structure schematic diagram of drive wheel in the utility model embodiment.

[0024] Figure 5 It is the section view of anti-loose nut in the utility model embodiment.

[0025] Figure 6 It is the structure schematic diagram of mounting bracket in the utility model embodiment.

[0026] In the figure: 1, the exciter; 11, the shell; 111, the front shell; 112, the rear shell; 113, the main shaft; 114, the auxiliary shaft; 115, the pulley; 116, the transmission belt; 117, the eccentric block; 118, the drive wheel; 119, the cover; 1110, the screw; 12, the tensioning assembly; 121, the mounting frame; 122, the tensioning wheel; 123, the waist-shaped hole; 13, the locknut; 131, the nut body; 132, the barrel; 133, the chuck; 134, the end cover; 135, the forcing head; 136, the ring table; 137, the elastic washer. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other in any manner without conflict.

[0028] Please refer to Figures 1 to 6 A kind of anti-loose vibrating screen exciter 1, including shell 11, main shaft 113, auxiliary shaft 114, belt drive assembly and tensioning assembly 12, main shaft 113 and auxiliary shaft 114 are all arranged in shell 11, eccentric block 117 is arranged on main shaft 113 and auxiliary shaft 114, main shaft 113 and auxiliary shaft 114 are connected by belt drive, main shaft 113 is connected with motor drive, tensioning assembly 12 is used to tension belt drive assembly, tensioning device is arranged in shell 11 by screw 1110, locknut 13 is arranged on screw 1110, to be used to fixedly mount tensioning assembly 12 in shell 11.

[0029] Shell 11 includes front shell 111 and rear shell 112, front shell 111 is fixedly spliced with rear front body, main shaft 113 and auxiliary shaft 114 are parallel to each other in shell 11. Main shaft 113 penetrates rear shell 112 and is located outside shell 11 at one end, and the end is provided with drive wheel 118, and main shaft 113 is connected with motor drive through drive wheel 118. Belt drive assembly includes pulley 115 and transmission belt 116, two pulleys 115 are fixedly arranged on main shaft 113 and auxiliary shaft 114 respectively, and transmission belt 116 is wound on the two pulleys 115. The motor drives the rotation of the main shaft 113, the main shaft 113 drives the rotation of the auxiliary shaft 114 through the belt drive assembly, and the eccentric blocks 117 on the main shaft 113 and the auxiliary shaft 114 are driven to rotate, thereby generating vibration.

[0030] The front shell 111 is provided with a screw rod 1110, and the tensioning assembly 12 is installed on the front shell 111 through the screw rod 1110. The tensioning assembly 12 comprises a mounting rack 121 and a tensioning wheel 122. The mounting rack 121 is in the shape of a long plate, and the tensioning wheel 122 is rotatably arranged at the end of the mounting rack 121. The outer circular surface of the tensioning wheel 122 is in abutment with the belt surface of the transmission belt 116, so as to apply a pre-tension to the transmission belt 116. A waist-shaped hole 123 is formed in the mounting rack 121 and extends along the length direction of the mounting rack 121. The screw rod 1110 is arranged in the waist-shaped hole 123. The mounting rack 121 is arranged perpendicularly to the belt surface of the transmission belt 116. The screw rod 1110 is inserted into the waist-shaped hole 123 and moves along the waist-shaped hole 123. The mounting rack 121 adjusts the height of the tensioning wheel 122 and adjusts the tensioning degree of the transmission belt 116.

[0031] The front shell 111 is provided with a cover 119, and the ends of the main shaft 113 and the auxiliary shaft 114 are covered in the cover 119, so as to avoid dust generated during the operation of the vibrating screen from entering.

[0032] The lock nut 13 comprises a nut body and a cylinder 132. The cylinder 132 is arranged on the end surface of the nut body and is coaxially arranged with the central axis of the nut body. A chuck 133 is arranged on the inner wall of the cylinder 132 and is arranged circumferentially along the inner wall of the cylinder 132. The cross section of the chuck 133 is in the shape of a plate. One end of the chuck 133 is fixedly connected to the inner wall of the cylinder 132, and the other end thereof is inclined towards the middle part of the nut body, so that a wedge-shaped gap is formed between the chuck 133 and the inner wall of the cylinder 132. The circumferential cross-sectional size of the wedge-shaped gap gradually decreases from the end of the cylinder 132 to the direction of the nut body. An end cover 134 is arranged on the cylinder 132 and is used to lock the nut body. The end cover 134 is in the shape of a cylinder and has a closed end. A through hole is formed in the closed end of the end cover 134 and is used for the screw rod 1110 to pass through. The outer circular surface of the cylinder 132 is provided with external threads, and the inner wall of the end cover 134 is provided with internal threads. The end cover 134 is threadedly connected to the cylinder 132. A pressing head 135 is further arranged in the end cover 134 and is in the shape of a ring. The pressing head 135 is coaxially arranged with the end cover 134. When the end cover 134 is threadedly connected to the cylinder 132, the pressing head 135 is inserted into the wedge-shaped gap. When the end cover 134 is rotated, the pressing head 135 gradually penetrates into the wedge-shaped gap as the length of the connection between the end cover 134 and the cylinder 132 increases. The internal space of the wedge-shaped gap gradually decreases, and the pressing head 135 is extruded towards the middle part of the cylinder 132. The pressing head 133 gradually tightly holds the screw rod 1110 in the nut body, so as to achieve locking and anti-loosening.

[0033] Further, the outer surface of the barrel 132 is provided with a ring platform 136, the ring platform 136 is located in the non-threaded section of the barrel 132, and the ring platform 136 is close to the nut body, the end surface of the ring platform 136 towards the end cover 134 is provided with an elastic washer 137, when the end cover 134 is threadedly connected with the barrel 132, the elastic washer 137 is clamped between the ring platform and the end cover 134, the elastic washer 137 is compressed to generate elastic force, the elastic force acts on the barrel 132 and the end cover 134, the friction force of the threaded connection between the barrel 132 and the end cover 134 is increased, so as to prevent the end cover 134 from being separated and loosened from the barrel 132.

[0034] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A loose vibration screen shaker exciter characterized by, The application relates to a belt tensioning assembly for a belt transmission assembly of a motor, which comprises a housing (11), a main shaft (113) and a secondary shaft (114), both arranged in the housing (11), eccentric blocks (117) arranged on the main shaft (113) and the secondary shaft (114), a motor output end connected with the main shaft (113), a belt transmission assembly arranged between the main shaft (113) and the secondary shaft (114), a tensioning assembly (12) arranged in the housing (11) for tensioning the belt transmission assembly, a screw rod (1110) arranged in the housing (11) and provided with a lock nut (13) for fixing the tensioning assembly (12), the lock nut (13) comprising a nut body (131), a collet (133) and an end cover (134), the collet (133) being arranged around the nut body (131) and on the end face of the nut body (131), the end cover (134) being sleeved on the collet (133) and being threadedly connected with the nut body (131), and the end cover (134) extruding the collet (133) towards the central axis of the nut body (131) when the end cover (134) is tightened with the nut body (131).

2. A vibratory screen activator according to claim 1, wherein, The end face of the nut body (131) is fixedly provided with a cylinder (132) coaxially arranged with the nut body (131), the collet (133) is arranged on the inner wall of the cylinder (132), the outer circular face of the cylinder (132) is provided with external threads, and the end cover (134) is threadedly connected with the cylinder.

3. A vibratory screen activator according to claim 2, wherein, The collet (133) is inclined towards the middle part of the cylinder (132) relative to the inner wall of the cylinder (132), and a wedge-shaped gap is formed between the collet (133) and the inner wall of the cylinder (132); the end cover (134) is internally provided with a ring-shaped pressing head (135) coaxially arranged with the end cover (134), and the pressing head (135) is inserted into the wedge-shaped gap.

4. A vibratory screen activator according to claim 3, wherein, The circumferential cross section of the wedge-shaped space gradually decreases from the end of the cylinder (132) towards the nut body (131).

5. A vibratory screen activator according to claim 2 wherein, The outer circular face of the cylinder (132) is provided with a ring platform (136), the end face of the ring platform (136) is provided with an elastic gasket (137), and the elastic gasket (137) is clamped between the ring platform (136) and the end cover (134).

6. A vibratory screen activator according to claim 1 wherein, The tensioning assembly (12) comprises a mounting frame (121) and a tensioning wheel (122), the mounting frame (121) is arranged in the housing (11), and the tensioning wheel (122) is rotatably arranged on the mounting frame (121).

7. A vibratory screen un-latching vibrator according to claim 6, wherein, A waist-shaped hole (123) is formed in the mounting frame (121), the screw rod (1110) is arranged in the waist-shaped hole (123), and the lock nut (13) is arranged on the screw rod (1110).

8. A vibratory screen activator according to claim 6 wherein, The belt transmission assembly comprises pulleys (115) arranged on the main shaft (113) and the secondary shaft (114) respectively, a transmission belt (116) wound around the two pulleys (115), and the tensioner (122) abutting against the transmission belt (116).

9. A vibratory screen activator according to claim 1 wherein, The shell (11) comprises a front shell (111) and a rear shell (112), the main shaft (113) penetrates through the rear shell (112), and the main shaft (113) is provided with a driving wheel (118) in transmission connection with the motor output end.

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