Polyvinyl chloride cable material particle screening device
By designing a screening device with multiple feed ports and diverter plates, combining the screen replacement structure of the slide chute and slider, and the discharge design of the feeding box and conical lower hopper, the problems of low screening efficiency, complex screen replacement and inconvenient discharge in the prior art are solved, and the effects of efficient screening, rapid replacement and optimized collection efficiency are achieved.
Patent Information
- Application Number
- CN202421237070.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-06-03
AI Technical Summary
The existing polyvinyl chloride cable material particle screening device has low screening efficiency, the screen replacement is complicated and time-consuming, and the particles are inconvenient to discharge, which affects the material collection efficiency.
A particle screening device including a screening box, a roof panel, a feed port, a splitter, a slider, a slider, a pull rod, a screen and a vibration motor is designed. By setting up multiple feed ports and diverting plates, uniform flow and diverting of particles are achieved; rapid replacement of screens is achieved through the chute and slide structure; through the feeding box and conical lower hopper, the discharge method of particles is optimized.
It improves the efficiency of particle screening, simplifies the screen replacement process, and improves the efficiency of material collection.
Smart Images
Figure CN222628305U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of particle screening devices, in particular to a polyvinyl chloride cable material particle screening device. Background Art
[0002] The particle screening device is a vibration screening mechanical device that uses the relative movement between the bulk material and the screen surface to make some particles pass through the screen holes, and classify materials such as sand, gravel, and crushed stone into different grades according to the particle size. The screening process of the screening machine is generally continuous. After the screening raw materials are fed to the screening machine (referred to as the sieve), the materials smaller than the size of the screen hole pass through the screen hole, which is called the undersize product; the materials larger than the size of the screen hole are continuously discharged from the screen surface, which is called the oversize product.
[0003] The existing PVC cable material particle screening device has low screening efficiency and cannot achieve efficient particle screening, resulting in low production efficiency. The screen of the existing screening device is easily affected by the impact and wear of particles and is easily damaged. Secondly, it cannot screen particles of a specific particle size and needs to be replaced frequently. The replacement process is relatively complicated and time-consuming, which affects its use. The existing screening device discharges the screened particles from discharge ports in different directions. Such a design affects the material collection efficiency and is inconvenient.
[0004] Therefore, a polyvinyl chloride cable material particle screening device is proposed. Utility Model Content
[0005] The main purpose of the utility model is to provide a polyvinyl chloride cable material particle screening device, which can effectively solve the problem that the existing particle screening device cannot achieve efficient particle screening, resulting in low production efficiency, the existing particle screening device has a relatively complicated screen replacement process and a long time, which affects the use, and the existing screening device discharges the screened particles from discharge ports in different directions, which is inconvenient and affects the material collection efficiency.
[0006] To achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a polyvinyl chloride cable material particle screening device, including a screening box, a top plate is fixedly installed on the upper end of the screening box, and one side of the upper end of the top plate is connected to three feed ports, and three diverter plates are fixedly connected to one side of the inner wall of the screening box, and are respectively located below the three feed ports, three first slide grooves are opened on both sides of the inner wall of the screening box, and the three first slide grooves are arranged at equal distances, and one end of the six first slide grooves is opened with a second through hole, three screens are arranged in the screening box, and the screen holes on the three screens are of different sizes and arranged from large to small, and the three screens Both ends of the net are fixedly connected with a first slider, one end of the six are opened with a first through hole, and the six first sliders are slidably set in the six first slide grooves respectively, three pull rods are set on both sides of the screening box, and the pull rods are inserted through the first through hole and the second through hole, and the six pull rods are fixedly connected with a limit plate, one end of the limit plate is fixedly installed with a first spring, one end of the first spring away from the limit plate is fixedly connected to the screening box, and the pull rod is located inside the first spring, a first vibration motor is fixedly installed on one side of the bottom end of the screening box, and a second vibration motor is fixedly installed on the side of the bottom end of the screening box away from the first vibration motor.
[0007] Preferably, a second slider is fixedly connected to one end of the screening box, a distribution box is arranged on one side of the second slider, a second slide groove is opened at one end of the distribution box adjacent to the screening box, and the second slider can slide in the second slide groove, a first partition, a second partition and a third partition are fixedly installed in the distribution box, the first partition, the second partition and the third partition are arranged equidistantly, and the second partition is located between the first partition and the third partition, the lower end of the distribution box is connected to a conical lower hopper, three fifth partitions are fixedly installed in the conical lower hopper, and the three fifth partitions correspond to the first partition, the second partition and the third partition respectively, and the lower end of the conical lower hopper is connected to four discharge ports.
[0008] Preferably, a collecting box is provided at the lower end of the four discharge ports, three fourth partitions are fixedly connected inside the collecting box, a universal wheel is fixedly installed at the lower end of the collecting box, and a handle is fixedly connected to the upper end surface of one side of the collecting box.
[0009] Preferably, two first fixed blocks are fixedly installed on both sides of the bottom end of the screening box, second springs are fixedly installed on the lower ends of the two first fixed blocks, and first support frames are fixedly installed on the ends of two second springs away from the first fixed blocks, two second fixed blocks are fixedly installed on both sides of the bottom end of the screening box, and the two second fixed blocks are located on one side of the two first fixed blocks, third springs are fixedly installed on the lower ends of the two second fixed blocks, and second support frames are fixedly installed on the ends of two third springs away from the second fixed blocks.
[0010] Preferably, the lower ends of the two first fixed blocks are fixedly connected to the first limit rod, the upper ends of the two first support frames are fixedly connected to the second limit rod, and the first limit rod and the second limit rod are both located in the second spring, the lower ends of the two second fixed blocks are fixedly connected to the third limit rod, the upper ends of the two second support frames are fixedly connected to the fourth limit rod, and the third limit rod and the fourth limit rod are both located in the third spring.
[0011] Preferably, a control panel is fixedly mounted on the first support frame, and an output end of the control panel is electrically connected to input ends of the first vibration motor and the second vibration motor.
[0012] Compared with the prior art, the utility model has the following beneficial effects:
[0013] 1. The utility model sets three feed ports and three diverter plates, which can make the particles flow evenly to the screen, so that the screen can screen the particles more evenly and effectively improve the screening efficiency. The first vibrator and the second vibrator at the bottom of the screening box are controlled to work to make the screening box vibrate. The three feed ports set on the top plate correspond to the three diverter plates in the screening box, so that the particles flow through the three feed ports to the three diverter plates for diversion, so that the particles can flow evenly to the screen and be screened evenly. This can effectively solve the problem of low screening efficiency and effectively improve the screening efficiency.
[0014] 2. The utility model can realize the rapid replacement of the screen by setting the first slide groove and the first slider, which effectively solves the problem of complexity and long time of replacing the screen. The first sliders at both ends of the screen are slidably arranged in the first slide groove, and the set pull rod is movably inserted through the first through hole and the second through hole to fix the screen. When the screen needs to be replaced, the first spring between the limit plate and the screening box is lengthened by pulling the pull rod, so that the pull rod no longer engages the first through hole and the second through hole. At this time, the screen can be taken out, and when the screen is taken out again, the first sliders at both ends slide in the six first slide grooves. Such a setting can quickly replace the screen, brings better use effect, and effectively solves the problem that the screen replacement process is relatively complicated and takes a long time.
[0015] 3. The utility model can effectively solve the problem that the particles after screening are discharged from the discharge ports in different directions, which affects the material collection efficiency, by means of the setting of the distribution box, the conical discharge hopper and the collection box. The distribution box can be divided into four discharge areas by means of the setting of the first partition, the second partition and the third partition, so that the particles of four specifications after screening can be diverted, and then the conical discharge hopper can be divided into four discharge areas by means of the setting of the three fifth partitions. The four discharge areas of the distribution box are connected with the four discharge areas of the conical discharge hopper, and the lower ends of the four discharge areas of the conical discharge hopper correspond to the four connected discharge ports, so that the particles of four different specifications can be classified and discharged. At this time, the diverted particles of four different specifications flow into the collection box respectively, which are divided into four storage areas by the three fourth partitions. In this way, the particles of four different specifications after screening can be diverted and collected collectively, which effectively solves the problem that the particles after screening are discharged from the discharge ports in different directions, which affects the material collection efficiency, and improves the collection efficiency.
[0016] The parts not involved in the device are the same as those in the prior art or can be implemented by using the prior art. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 This is a schematic diagram of the overall structure of a polyvinyl chloride cable material particle screening device from a first perspective of the utility model.
[0018] Figure 2 This is a second-view overall structural schematic diagram of a polyvinyl chloride cable material particle screening device of the utility model.
[0019] Figure 3 It is a half-section view of a polyvinyl chloride cable material particle screening device according to the utility model.
[0020] Figure 4 The utility model is an exploded view of a polyvinyl chloride cable material particle screening device.
[0021] Figure 5 The utility model is a schematic diagram of the screening box structure of a polyvinyl chloride cable material particle screening device.
[0022] Figure 6 The utility model is a schematic diagram of three screen structures of a polyvinyl chloride cable material particle screening device.
[0023] Figure 7 This is a schematic diagram of the pull rod structure of a polyvinyl chloride cable material particle screening device of the utility model
[0024] Figure 8 This is a schematic diagram of the structure of a material distribution box, a conical lower hopper and a discharge port of a polyvinyl chloride cable material particle screening device of the utility model
[0025] Fig. 9 This is a schematic diagram of the structure of a collection box for a polyvinyl chloride cable material particle screening device of the utility model.
[0026] Fig.10 This is a schematic diagram of the structure of a first support frame of a polyvinyl chloride cable material particle screening device of the utility model.
[0027] Fig.11 The utility model is a schematic diagram of the second support frame structure of a polyvinyl chloride cable material particle screening device.
[0028] In the figure: 1, screening box; 2, top plate; 3, feed port; 4, diverter plate; 5, first chute; 6, screen; 7, first slider; 8, first through hole; 9, second through hole; 10, pull rod; 11, limit plate; 12, first spring; 13, material distribution box; 14, first partition; 15, second partition; 16, third partition; 17, second chute; 18, conical lower hopper; 19, discharge port; 20, collection box; 21, fourth Partition; 22. universal wheel; 23. handle; 24. first support frame; 25. second spring; 26. first fixed block; 27. second support frame; 28. third spring; 29. second fixed block; 30. control panel; 31. fifth partition; 32. first vibration motor; 33. second vibration motor; 34. second slider; 35. first limit rod; 36. second limit rod; 37. third limit rod; 38. fourth limit rod. DETAILED DESCRIPTION
[0029] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.
[0030] like Figure 1 - Fig.11As shown, a polyvinyl chloride cable material particle screening device comprises a screening box 1, a top plate 2 is fixedly installed on the upper end of the screening box 1, three feed ports 3 are connected to one side of the upper end of the top plate 2, three diverter plates 4 are fixedly connected to one side of the inner wall of the screening box 1, and are respectively located below the three feed ports 3, three first chutes 5 are opened on both sides of the inner wall of the screening box 1, and the three first chutes 5 are arranged at equal distances, and a second through hole 9 is opened at one end of the six first chutes 5, three screens 6 are arranged in the screening box 1, and the screen holes on the three screens 6 are of different sizes and arranged from large to small, and the three screens 6 are fixedly connected with first sliders 7 at both ends, and first through holes 8 are opened at one end of each of the six sliders 7, and the six first sliders 7 are slidably arranged in the six first chute 5, respectively. Three pull rods 10 are arranged on both sides of the screening box 1, and the pull rods 10 are inserted through the first through holes 8 and the second through holes 9. The six pull rods 10 are fixedly connected with a limit plate 11, and a first spring 12 is fixedly installed at one end of the limit plate 11. The end of the first spring 12 away from the limit plate 11 is fixedly connected to the screening box 1, and the pull rod 10 is located inside the first spring 12. A first vibration The first vibrator 32 is a vibrator 33, and the second vibrator 33 is fixedly installed on the side of the lower end of the screening box 1 away from the first vibrator 32. By adopting the above technical solution: by controlling the first vibrator 32 and the second vibrator 33 at the lower end of the screening box 1 to work, the screening box 1 is vibrated, and the three feed ports 3 arranged on the top plate 2 correspond to the three diverter plates 4 in the screening box 1, so that the particles flow through the three feed ports 3 to the three diverter plates 4 for diversion, so that the particles can flow evenly to the screen 6, which can effectively solve the problem of low screening efficiency. The first sliders 7 at both ends of the three screens 6 are arranged They are respectively slidably arranged in the six first slide grooves 5, and the arranged pull rod 10 is movably inserted into the first through hole 8 and the second through hole 9, so that the screen 6 can be fixed. When the screen 6 needs to be replaced, the first spring 12 between the limit plate 11 and the screening box 1 is lengthened by pulling the pull rod 10, so that the pull rod 10 is no longer clamped in the first through hole 8 and the second through hole 9. At this time, the screen 6 can be taken out. When the screen 6 is taken out again, the first sliders 7 at both ends slide in the six first slide grooves 5. Such an arrangement can quickly replace the screen 6, and screens 6 of different specifications can also be replaced.
[0031] like Figure 1 - Figure 8As shown, a second slider 34 is fixedly connected to one end of the screening box 1, a distribution box 13 is arranged on one side of the second slider 34, a second slide groove 17 is opened at one end of the distribution box 13 adjacent to the screening box 1, and the second slider 34 can slide in the second slide groove 17, a first partition 14, a second partition 15 and a third partition 16 are fixedly installed in the distribution box 13, the first partition 14, the second partition 15 and the third partition 16 are arranged equidistantly, and the second partition 15 is located between the first partition 14 and the third partition 16, the lower end of the distribution box 13 is connected to a conical lower hopper 18, three fifth partitions 31 are fixedly installed in the conical lower hopper 18, and the three fifth partitions 31 are respectively connected to the first partition 14, the second partition 15 and the third partition The plate 16 corresponds to the conical hopper 18, and the lower end is connected to four discharge ports 19. By adopting the above technical solution: the distribution box 13 is matched with the second slide 17 and the second slider 34, so that the distribution box 13 can be snap-fitted with the screening box 1. The first partition 14, the second partition 15 and the third partition 16 can divide the distribution box 13 into four discharge areas. The three fifth partitions 31 can divide the conical hopper 18 into four discharge areas. The four discharge areas of the distribution box 13 are connected to the four discharge areas of the conical hopper 18, and the lower ends of the four discharge areas of the conical hopper 18 correspond to the four discharge ports 19, so that granular materials of different specifications can be transported and discharged.
[0032] like Fig. 9 As shown, a collecting box 20 is provided at the lower end of the four discharge ports 19, three fourth partitions 21 are fixedly connected in the collecting box 20, a universal wheel 22 is fixedly installed at the lower end of the collecting box 20, and a handle 23 is fixedly connected to the upper end surface of one side of the collecting box 20. By adopting the above technical scheme: the three fourth partitions 21 set can divide the collecting box 20 into four storage areas, each storage area can store materials of different specifications, so that when the collected materials need to be transferred, the universal wheel 22 at the lower end of the collecting box 20 can be rotated by pulling the handle 23, so that the transfer of materials can be realized.
[0033] like Figure 4As shown, two first fixed blocks 26 are fixedly installed on both sides of the bottom end of the screening box 1, and second springs 25 are fixedly installed on the lower ends of the two first fixed blocks 26, and first support frames 24 are fixedly installed on the ends of the two second springs 25 away from the first fixed blocks 26, and two second fixed blocks 29 are fixedly installed on both sides of the bottom end of the screening box 1, and the two second fixed blocks 29 are located on one side of the two first fixed blocks 26, and third springs 28 are fixedly installed on the lower ends of the two second fixed blocks 29, and second support frames 27 are fixedly installed on the ends of the two third springs 28 away from the second fixed blocks 29. By adopting the above technical solution: the second springs 25 connected between the two first fixed blocks 26 and the two first support frames 24, and the third springs 28 connected between the second fixed blocks 29 and the second support frames 27, the screening box 1 can prevent the vibration force from being transmitted outward when it is vibrated.
[0034] like Fig.10 - Fig.11 As shown, the lower ends of the two first fixed blocks 26 are fixedly connected to the first limiting rod 35, the upper ends of the two first support frames 24 are fixedly connected to the second limiting rod 36, and the first limiting rod 35 and the second limiting rod 36 are both located in the second spring 25, the lower ends of the two second fixed blocks 29 are fixedly connected to the third limiting rod 37, the upper ends of the two second support frames 27 are fixedly connected to the fourth limiting rod 38, and the third limiting rod 37 and the fourth limiting rod 38 are both located in the third spring 28. By adopting the above technical solution: the first limiting rod 35 and the second limiting rod 36 can limit the second spring 25, and the third limiting rod 37 and the fourth limiting rod 38 can limit the third spring 28.
[0035] A control panel 30 is fixedly mounted on the first support frame 24 , and an output end of the control panel 30 is electrically connected to input ends of the first vibration motor 32 and the second vibration motor 33 .
[0036] It should be noted that the utility model is a particle screening device for polyvinyl chloride cable materials. When in use, the device is first placed in a designated position, and the first vibration motor 32 and the second vibration motor 33 at the bottom of the screening box 1 are operated by controlling the control panel 30 to vibrate the screening box 1. The three feed ports 3 arranged on the top plate 2 correspond to the three diverter plates 4 in the screening box 1, so that the particles flow through the three feed ports 3 to the three diverter plates 4 for diversion, so that the particles can flow evenly to the screen 6, and the particles can flow evenly to the screen 6, which can effectively solve the problem of low screening efficiency. The particles are screened through the three screens 6 and flow into the distribution box 13 matched with the second slide 17 and the second slider 34, so that the distribution box 13 can be snap-fitted with the screening box 1, so that the particles flow into the screening box 1, and the first partition 14, the second partition 15 and the third partition 15 are set. The partition 16 can divide the distribution box 13 into four unloading areas, so that particles of different specifications can flow to the conical unloading hopper 18 through different areas. The three fifth partitions 31 set can divide the conical unloading hopper 18 into four unloading areas. The four unloading areas of the distribution box 13 are communicated with the four unloading areas of the conical unloading hopper 18, so that the particles flow through the conical unloading hopper 18, and the particles pass through the lower ends of the four unloading areas of the conical unloading hopper 18 and the four discharge ports 19 that are communicated with each other, so that particles of different specifications are transported and unloaded. At this time, the particles flow into the collecting box 20. The three fourth partitions 21 set in the collecting box 20 can divide the collecting box 20 into four storage areas, so that different particles can be collected in different areas. When the collected materials need to be transported, the universal wheel 22 at the lower end of the collecting box 20 can be rotated by pulling the handle 23, so that the transportation of the materials can be realized.
[0037] When the screen 6 needs to be replaced, the first spring 12 between the limit plate 11 and the screening box 1 is lengthened by pulling the pull rod 10, so that the pull rod 10 no longer engages the first through hole 8 and the second through hole 9. At this time, the screen 6 can be taken out, and when the screen 6 is taken out again, the first sliders 7 at both ends slide in the six first sliding grooves 5. This arrangement can quickly replace the screen 6, and screens 6 of different specifications can also be replaced, which brings better use effect and effectively solves the problem that the screen replacement process is more complicated and takes a long time.
[0038] The second spring 25 connected between the two first fixed blocks 26 and the two first support frames 24, and the third spring 28 connected between the second fixed block 29 and the second support frame 27, can prevent the vibration force from being transmitted outward when the screening box 1 is vibrated. The first limiting rod 35 and the second limiting rod 36 can limit the second spring 25, and the third limiting rod 37 and the fourth limiting rod 38 can limit the third spring 28.
[0039] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. 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, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. A polyvinyl chloride cable material particle screening device, comprising a screening box (1), characterized in that: A top plate (2) is fixedly mounted on the upper end of the screening box (1), and one side of the upper end of the top plate (2) is connected to three feed ports (3). Three diverter plates (4) are fixedly connected to one side of the inner wall of the screening box (1), and are respectively located below the three feed ports (3). Three first chutes (5) are provided on both sides of the inner wall of the screening box (1), and the three first chutes (5) are arranged at equal intervals. One end of the six first chutes (5) is provided with a second through hole (9). Three screens (6) are arranged in the screening box (1), and the screen holes on the three screens (6) are arranged in descending order of size. Both ends of the three screens (6) are fixedly connected to first sliders (7), and one end of the six screens is provided with a first through hole (8), and the six first through holes (9) are arranged in descending order of size. The first slider (7) is slidably arranged in the six first slide grooves (5), respectively. Three pull rods (10) are arranged on both sides of the screening box (1), and the pull rods (10) are inserted through the first through hole (8) and the second through hole (9). The six pull rods (10) are fixedly connected to a limit plate (11), and a first spring (12) is fixedly installed at one end of the limit plate (11). The end of the first spring (12) away from the limit plate (11) is fixedly connected to the screening box (1), and the pull rod (10) is located inside the first spring (12). A first vibration motor (32) is fixedly installed on one side of the bottom end of the screening box (1), and a second vibration motor (33) is fixedly installed on the side of the bottom end of the screening box (1) away from the first vibration motor (32).
2. A polyvinyl chloride cable material particle screening device according to claim 1, characterized in that: The screening box (1) is fixedly connected to a second slider (34) at one end, a material distribution box (13) is arranged on one side of the second slider (34), a second slide groove (17) is provided at one end of the material distribution box (13) adjacent to the screening box (1), and the second slider (34) can slide in the second slide groove (17), and a first partition (14), a second partition (15) and a third partition (16) are fixedly installed in the material distribution box (13), and the first partition (14), the second partition (15) and the third partition (16) are arranged on the first partition (14), the second partition (15) and the third partition (16) are arranged on the second partition (16) and the second partition (16) are arranged on the second partition (17). (16) are arranged equidistantly between the first partition (14) and the third partition (16), and the second partition (15) is located between the first partition (14) and the third partition (16); the lower end of the distribution box (13) is connected to a conical lower hopper (18), and three fifth partitions (31) are fixedly installed in the conical lower hopper (18), and the three fifth partitions (31) respectively correspond to the first partition (14), the second partition (15) and the third partition (16); the lower end of the conical lower hopper (18) is connected to four discharge ports (19).
3. A polyvinyl chloride cable material particle screening device according to claim 2, characterized in that: A collection box (20) is provided at the lower end of the four discharge ports (19), three fourth partitions (21) are fixedly connected inside the collection box (20), a universal wheel (22) is fixedly mounted at the lower end of the collection box (20), and a handle (23) is fixedly connected to the upper end surface of one side of the collection box (20).
4. A polyvinyl chloride cable material particle screening device according to claim 1, characterized in that: Two first fixed blocks (26) are fixedly mounted on both sides of the bottom end of the screening box (1), a second spring (25) is fixedly mounted on the lower end of the two first fixed blocks (26), and a first support frame (24) is fixedly mounted on one end of the two second springs (25) away from the first fixed blocks (26). Two second fixed blocks (29) are fixedly mounted on both sides of the bottom end of the screening box (1), and the two second fixed blocks (29) are located on one side of the two first fixed blocks (26), a third spring (28) is fixedly mounted on the lower end of the two second fixed blocks (29), and a second support frame (27) is fixedly mounted on one end of the two third springs (28) away from the second fixed blocks (29).
5. A polyvinyl chloride cable material particle screening device according to claim 4, characterized in that: The lower ends of the two first fixing blocks (26) are fixedly connected to a first limiting rod (35), the upper ends of the two first supporting frames (24) are fixedly connected to a second limiting rod (36), and the first limiting rod (35) and the second limiting rod (36) are both located in the second spring (25), the lower ends of the two second fixing blocks (29) are fixedly connected to a third limiting rod (37), the upper ends of the two second supporting frames (27) are fixedly connected to a fourth limiting rod (38), and the third limiting rod (37) and the fourth limiting rod (38) are both located in the third spring (28).
6. A polyvinyl chloride cable material particle screening device according to claim 5, characterized in that: A control panel (30) is fixedly mounted on the first support frame (24), and an output end of the control panel (30) is electrically connected to input ends of the first vibration motor (32) and the second vibration motor (33).