Piano carrying device
By designing a piano handling device including hydraulic lifting device and a track wheel set, the problems of vibration and bump damage, loading and unloading, and climbing stairs during the handling process are solved, and efficient and safe piano handling is achieved.
Patent Information
- Application Number
- CN202411780191.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-05
- Publication Date
- 2025-02-18
AI Technical Summary
The piano is easily damaged by vibration and bumps during handling, and it is difficult to load and unload and climb stairs. The existing equipment has poor shock absorption and cannot achieve steering function.
A piano handling device was designed, including a frame, lifting platform, hydraulic lifting device, crawler set, Samsung wheel, cart, front baffle and Samsung wheel drive motor. The hydraulic lifting device and crawler set are used to realize the piano Stabilize lifting and steering.
This device effectively reduces vibration and bump damage during the piano handling process, solves the difficulties of loading and unloading and stair climbing, improves handling efficiency and safety, and reduces the need for manpower handling.
Smart Images
Figure CN119461142A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a piano transport device and belongs to the technical field of piano transport. Background Art
[0002] The piano is a heavy instrument that needs careful care. There are several main issues in the process of moving it: 1) Avoid vibration and bumps on the piano during transportation as much as possible to avoid damage to the action and bobbin; 2) Loading and unloading pianos by staff is a difficult problem in the transportation process; 3) During the transportation process, it is necessary to cross thresholds and climb stairs, which is another difficult problem in the transportation process.
[0003] Most of the existing pianos are transported by a simple four-wheeled cart or by staff members carrying the piano or double-keyboard electronic keyboard from the piano room to the concert hall. During the process, the piano needs to go up and down stairs and cross thresholds. After several performances, the piano foot rollers will fall off, and the piano pegs will be damaged due to loosening due to bumps. The transportation is not only very troublesome, but also causes damage to the piano. The pianos sold in piano shops are mainly upright home pianos. The stair transportation process also relies on 3 to 4 staff members to carry the piano by hand and on their shoulders. The four-wheeled cart used can only transport the piano on a flat surface and cannot climb stairs. The existing stair climbing carts have a load-bearing capacity of less than 50 kilograms, and the power-assisting process still requires the participation of multiple people, and the shock absorption effect is poor, and the steering function cannot be realized. Therefore, there is an urgent need for a device that can solve the problems of piano loading and unloading and stair climbing. Summary of the invention
[0004] In order to overcome the shortcomings of the prior art, the present invention provides a piano transport device, which can effectively solve the problem of difficult piano transport, make the loading and unloading and transport of the piano convenient and quick, and solve the problems of crossing thresholds, climbing stairs and turning, avoid damage to the internal parts of the piano, affect the pitch, etc., reduce manpower transport, and reduce the bumpy damage to the piano during transport.
[0005] The technical solution adopted by the present invention to solve its technical problems is: a piano transport device, including a frame, a lifting platform, a hydraulic lifting device, a track wheel group, a three-star wheel, a loading vehicle, a front baffle and a three-star wheel driving motor, wherein a lifting platform is arranged on the top of the frame, a hydraulic lifting device is installed between the lifting platform and the frame, and the hydraulic lifting device is a lifting structure with cross-links on both sides; a track wheel group capable of turning is installed at both ends of the front side of the frame, and a three-star wheel is installed at both ends of the rear side of the frame; a three-star wheel driving motor is installed on the frame on the inner side of one of the three-star wheels, and the driving end of the three-star wheel driving motor is connected to the three-star wheel; on the front side of the top of the lifting platform, the front end of the lifting platform is hinged to the bottom of the front baffle; on the rear side of the front baffle, a half-enclosed guardrail is fixedly connected to the top of the lifting platform; below the guardrail, a horizontal upper waist-shaped hole is provided on the left and right sides of the lifting platform; in the fence, a loading vehicle is placed on the lifting platform.
[0006] Furthermore, a rectangular trough is provided in the frame, and a horizontal waist-shaped hole is provided in the wall panels on the left and right sides of the rectangular trough; an inclined back panel is fixedly connected to the rear side of the frame, and an armrest with a control button is provided on the upper end of the back panel; a controller is installed on the back of the back panel.
[0007] Furthermore, there are two sets of track wheel groups, which are arranged symmetrically; the track wheel group includes a track wheel bracket, a track motor, a track driving wheel, a front driven wheel of the track, a rear driven wheel of the track, a front track and a rear track, the main body of the track bracket is a vertical plate, a plane plate body is fixed on the top of the rear part of the vertical plate, and the plane plate body is hinged to the bottom of the frame; the plane plate body and the vertical plate are in an inverted L shape, and the front part of the vertical plate is upturned; a track motor is installed at the middle position of the inner side of the vertical plate, and a track driving wheel is installed at the driving end of the track motor, and the track driving wheel is located on the outer side of the vertical plate; on the side of the track driving wheel, a front driven wheel of the track and a rear driven wheel of the track are respectively installed at the front and rear ends of the vertical plate; a circle of front track is installed between the front driven wheel of the track and the track driving wheel, and a circle of rear track is installed between the rear driven wheel of the track and the track driving wheel, and the front track and the rear track are staggered, and the two front track are between the two rear track.
[0008] Furthermore, the hydraulic lifting device includes a hydraulic cylinder, a cross-link single piece, an articulated shaft I and an articulated shaft II. The cross-link single piece has two pieces in total. Each connection point of the connecting rods in the two cross-link single pieces and the corresponding upper end heads and lower end heads of the two cross-link single pieces are hinged through the articulated shaft I; the corresponding center positions of each connecting rod cross in the two cross-link single pieces are hinged through the articulated shaft II; the two ends of the lower two articulated shafts I are respectively located in the corresponding lower waist-shaped holes on their sides, and the two ends of the upper two articulated shafts I are respectively located in the corresponding upper waist-shaped holes on their sides; one end of the hydraulic cylinder is hinged to the middle position of the lower side articulated shaft I, and the piston end of the hydraulic cylinder is hinged to the middle position of the upper articulated shaft II.
[0009] Furthermore, two spaced-apart limit holes are provided in the lifting platform, a stopper is provided in the limiter hole, a protrusion is fixed at both ends of the stopper, the lower part of the stopper is fitted and inserted into the limiter hole, the protrusion rests on the table top of the lifting platform, and the upper part of the stopper protrudes from the lifting platform.
[0010] Furthermore, a strap socket is provided at the middle position of the front and rear ends of the lifting platform.
[0011] Furthermore, the wheels of the cargo-carrying vehicle are universal wheels made of rubber, and a shock absorber is installed between the universal wheel and the vehicle plate of the cargo-carrying vehicle.
[0012] Furthermore, two spaced fixing seats are fixed on both sides of the cargo carrier, and the fixing nails are threadedly connected to the fixing seats.
[0013] The beneficial effects of the present invention are as follows: the present invention has the advantages of strong shock absorption effect, convenient use, high handling efficiency, intelligent control, etc., and can avoid problems such as damage to internal parts of the piano and influence on pitch due to collision and bumping during manual handling; the handling speed is improved, the problem of difficulty in piano handling is solved, the handling cost is reduced, the handling time and manpower are saved, the manual handling is reduced, and the bumping damage to the piano during the handling process is reduced; the present invention is mainly promoted and applied in the loading and unloading and handling of large musical instruments, instruments, and equipment in piano shops, music colleges and other colleges and universities, as well as in the decoration and moving processes, for the loading and unloading and handling of objects weighing about 500 kilograms. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments.
[0015] Figure 1 It is a structural schematic diagram of the present invention.
[0016] Figure 2 It is a schematic structural diagram of the present invention viewed from the handrail side.
[0017] Figure 3 It is a schematic diagram of a vehicle frame of the present invention.
[0018] Figure 4 It is a schematic diagram of the lifting platform of the present invention.
[0019] Figure 5 It is a schematic diagram of a track wheel assembly of the present invention.
[0020] Figure 6 It is a schematic diagram of the track wheel bracket of the present invention.
[0021] Figure 7 It is a schematic diagram of the cargo carrier of the present invention.
[0022] Figure 8 It is a schematic diagram of the position of the shock absorber of the present invention.
[0023] Fig. 9 It is a schematic diagram of the stopper of the present invention.
[0024] Fig.10 It is a schematic diagram of the lifting platform of the present invention when it is lifted.
[0025] Fig.11 It is a schematic diagram of the position of the hydraulic cylinder of the present invention.
[0026] Fig.12 This is a schematic diagram of how to move a piano to a lifting platform.
[0027] Fig.13 A schematic diagram of the use of the present invention when climbing stairs.
[0028] Numbers in the figure: 1. Frame, 101. Rectangular trough, 102. Lower waist-shaped hole, 103. Back plate, 104. Handrail, 105. Controller, 2. Lifting platform, 201. Upper waist-shaped hole, 202. Limiting hole, 203. Strap socket, 3. Hydraulic lifting device, 301. Hydraulic cylinder, 302. Cross-link single piece, 303. Articulated shaft I, 304. Articulated shaft II, 4. Track wheel set, 401. Track wheel bracket, 4011 , vertical plate, 4012, flat plate, 402, track motor, 403, track driving wheel, 404, front passive wheel of track, 405, rear passive wheel of track, 406, front track, 407, rear track, 5, three-star wheel, 6, carrier, 601, shock absorber, 7, front baffle, 8, block, 801, protrusion, 9, guardrail, 10, fixed seat, 11, fixing nail, 12, three-star wheel driving motor, 13, piano. DETAILED DESCRIPTION
[0029] like Figure 1As shown in FIG. 13 , a piano transport device comprises a frame 1, a lifting platform 2, a hydraulic lifting device 3, a track wheel set 4, a three-star wheel 5, a cargo carrier 6, a front baffle 7 and a three-star wheel drive motor 12. A lifting platform 2 is arranged on the top of the frame 1, a hydraulic lifting device 3 is installed between the lifting platform 2 and the frame 1, and the hydraulic lifting device 3 is a lifting structure with cross-links on both sides; a steerable track wheel set 4 is installed at both ends of the front side of the frame 1, and a three-star wheel 5 is installed at both ends of the rear side of the frame 1; a three-star wheel drive motor 12 is installed on the frame 1 on the inner side of one of the three-star wheels 5, and the three-star wheel drive motor 12 The driving end is connected to the three-star wheel 5; on the front side of the top of the lifting platform 2, the front end of the lifting platform 2 is hinged to the bottom of the front baffle 7; on the rear side of the front baffle 3, a semi-enclosed guardrail 9 is fixedly connected to the top of the lifting platform 2; below the guardrail 9, a horizontal upper waist-shaped hole 201 is provided on the left and right sides of the lifting platform 2; in the fence 9, a cargo carrier 6 is placed on the lifting platform 2, and the wheels of the cargo carrier 6 are universal wheels made of rubber, and a shock absorber 601 is installed between the universal wheel and the vehicle plate of the cargo carrier 6; two spaced fixing seats 10 are fixed on the left and right sides of the cargo carrier 6, and the fixing nails 11 are threadedly connected to the fixing seats 10.
[0030] A rectangular trough 101 is provided in the frame 1, and a horizontal waist-shaped hole 102 is provided in the wall panels on the left and right sides of the rectangular trough 101; an inclined back panel 103 is fixedly connected to the rear side of the frame 1, and an armrest 104 with a control button is provided on the upper end of the back panel 103; a controller 105 is installed on the back of the back panel 103.
[0031] There are two sets of track wheel groups 4, which are arranged symmetrically; the track wheel group 4 includes a track wheel bracket 401, a track motor 402, a track driving wheel 403, a front track driven wheel 404, a rear track driven wheel 405, a front track 406 and a rear track 407. The main body of the track bracket 401 is a vertical plate 4011, and a plane plate body 4012 is fixed on the top of the rear side of the vertical plate 4011. The plane plate body 4012 is hinged to the bottom of the frame 1; the plane plate body 4012 and the vertical plate 4011 are in an inverted L shape, and the front side of the vertical plate 4011 is upturned; a track is installed at the middle position of the inner side of the vertical plate 4011 Motor 402, a track driving wheel 403 is installed at the driving end of the track motor 402, and the track driving wheel 403 is located on the outside of the vertical plate 4011; on the side of the track driving wheel 403, a front track passive wheel 404 and a rear track passive wheel 405 are respectively installed at the front and rear ends of the vertical plate 4011; a circle of front track 406 is installed between the front track passive wheel 404 and the track driving wheel 403, and a circle of rear track 407 is installed between the rear track passive wheel 405 and the track driving wheel 403, and the front track 406 and the rear track 407 are staggered, and the two front track 406 are between the two rear track 407.
[0032] The hydraulic lifting device 3 includes a hydraulic cylinder 301, a cross-link single piece 302, an articulation axis I 303 and an articulation axis II 304. The cross-link single piece 302 has two pieces in total. The connection points of the connecting rods in the two cross-link single pieces 302 and the corresponding upper ends and lower ends of the two cross-link single pieces 302 are all articulated through the articulation axis I 303; the central positions corresponding to the crosses of each connecting rod in the two cross-link single pieces 302 are all articulated through the articulation axis II 304; the two ends of the lower two articulation axes I 303 are respectively located in the corresponding lower waist-shaped holes 102 on their sides, and the two ends of the upper two articulation axes I 303 are respectively located in the corresponding upper waist-shaped holes 201 on their sides; one end of the hydraulic cylinder 301 is articulated at the middle position of the articulation axis I 303 on one side of the lower side, and the piston end of the hydraulic cylinder 301 is articulated at the middle position of the upper articulation axis II 304.
[0033] Two spaced apart limiting holes 201 are provided in the lifting platform 2, a stopper 8 is provided in the limiting hole 201, a protrusion 801 is fixed at both ends of the stopper 8, the lower part of the stopper 8 is inserted into the limiting hole 201, the protrusion 801 is against the table surface of the lifting platform 2, and the upper part of the stopper 8 protrudes from the lifting platform 2; a strap socket 203 is provided in the middle position of the front and rear ends of the lifting platform 2.
[0034] When loading or unloading the piano 13, the piano 13 can be placed on the loading cart 6 in advance, and the fixing nails 11 are used to press the left and right sides of the piano 13, and the piano 13 is tied up by the strap sockets 203. The movement of the cart device is controlled by the controller 105 and the control buttons on the armrest 104. When unloading, the cart device is placed close to the end of the transport vehicle, and the piston end of the hydraulic cylinder 301 extends upward to drive the connected articulated shaft II 304 to move upward. The articulated shaft II 304 drives the two cross-link single pieces 302 to unfold and raise the lifting platform 2 to a position flush with the bottom surface of the cargo compartment, and the front windshield is flipped open. The plate 7 is placed on the cargo compartment to push the cargo trolley 6 and the piano 13 to the lifting platform 2; the stopper 8 is installed in the limiting hole 201, and the piano 13 is limited by the two stoppers 8, and the front baffle 7 is closed and locked; the piston end of the hydraulic cylinder 301 falls back to drive the articulated shaft II 304 to move downward, and the articulated shaft II 304 drives the two cross-link single pieces 302 to compress and drive the lifting platform 2 to fall; at this time, the piano 13 can be transported by the trolley device; during the lifting process, the two ends of the upper and lower articulated shafts I 303 move in the corresponding lower waist-shaped hole 102 and upper waist-shaped hole 201 on their respective sides.
[0035] When climbing stairs, the crawler motor 402 drives the crawler driving wheel 403 to rotate, and under the action of the front crawler 406 and the rear crawler 407, the front driven wheel 404 of the crawler and the rear driven wheel 405 of the crawler rotate together; at the same time, the three-star wheel driving motor 12 drives the three-star wheel 5 on the same side to rotate, and the three-star wheel 5 on the other side also moves after contacting the stairs; because the front end of the vertical plate 4011 is tilted upward, the front crawler 406 is the first to contact the stairs. Based on the crawler transmission and inclined plane principle, the power of the crawler transmission mechanism is converted into a force for climbing up the stairs, so that the cart device completes the climbing action. The crawler is relatively long and can cover more than two steps at the same time, thereby realizing the movement of climbing stairs; the four crawlers are arranged side by side, which increases the contact area with the stairs and reduces the resistance when climbing stairs; through the rolling of the crawler and the supporting action of the rear three-star wheel 5, the two three-star wheels 5 on the rear side support the cart device and drive the cart device together with the crawler wheel group 4 to climb the stairs.
[0036] When the cart device needs to turn, the direction can be adjusted at will through the independent driving of the two track motors 402. By utilizing the principle of differential steering, when the forward speed of the left track wheel set 4 is faster than that of the right track wheel set 4, the cart device will rotate to the right; conversely, when the forward speed of the right track wheel set 4 is faster than that of the left track wheel set 4, the cart device will rotate to the left; when the speed and direction of the left and right track wheel sets 4 are exactly the same, the cart device will move in a straight line; when the speed directions of the left and right track wheel sets 4 are opposite, the cart device will turn on the spot.
[0037] During use, the cart device and the carrier 6 form a mother-child car for transporting the piano (heavy object). The shock absorber 601 and the rubber universal wheel installed on the carrier 6 solve the bump problem during transportation, saving manpower while achieving shock-absorbing protection for the piano 13 (heavy object). That is, the child car is the basis for carrying and fixing the piano (heavy object), and the shock absorber 601 is designed on the child car, and the child car carries the piano 13 (heavy object) to the mother car and fixes it again; the hydraulic lifting device 3 on the mother car solves the problem of loading and unloading the piano 13 from the ground to the stage (truck or high place). In order to minimize the transportation journey, the mother car is designed to be equipped with a lifting device and a motor as the power of the electric The stair climbing device improves the transportation speed, can minimize the damage to the piano 13 during transportation, protect the transporters, and improve the quality and efficiency of transportation; when climbing the stairs, the piano 13 is fixed with devices such as straps, fixing nails 11, front baffles 7 and blocks 8, and the differential steering function of the front track of the cart device is used to achieve the change of the forward direction, and the three-star wheels 5 at the rear play a boosting role, thereby solving the problem of crossing the threshold and climbing the stairs; during the whole process, one staff member mainly controls the operation of the cart device, and the other staff member assists. When going down the stairs, the three-star wheels 5 are in front and the tracks are at the back. One of the staff members uses straps to pull the cart in the opposite direction to prevent the cart device from sliding due to inertia.
Claims
1. A piano transport device, characterized in that: The vehicle comprises a vehicle frame (1), a lifting platform (2), a hydraulic lifting device (3), a track wheel group (4), a three-star wheel (5), a cargo carrier (6), a front baffle (7) and a three-star wheel driving motor (12); a lifting platform (2) is arranged on the top of the vehicle frame (1); a hydraulic lifting device (3) is installed between the lifting platform (2) and the vehicle frame (1); the hydraulic lifting device (3) is a lifting structure with cross-links on both sides; a track wheel group (4) capable of turning is installed at both ends of the front side of the vehicle frame (1); and a three-star wheel (5) is installed at both ends of the rear side of the vehicle frame (1); A three-star wheel driving motor (12) is installed on the vehicle frame (1) on the inner side of a three-star wheel (5), and the driving end of the three-star wheel driving motor (12) is connected to the three-star wheel (5); on the front side of the top of the lifting platform (2), the front end of the lifting platform (2) is hinged to the bottom of the front baffle (7); on the rear side of the front baffle (3), a half-enclosed guardrail (9) is fixedly connected to the top of the lifting platform (2); below the guardrail (9), a horizontal upper waist-shaped hole (201) is provided on the left and right sides of the lifting platform (2); and a cargo vehicle (6) is placed on the lifting platform (2) in the fence (9).
2. A piano transport device according to claim 1, characterized in that: A rectangular trough (101) is provided in the frame (1), and a horizontal waist-shaped hole (102) is provided in the wall panels on the left and right sides of the rectangular trough (101); a tilted back panel (103) is fixedly connected to the rear side of the frame (1), and a handrail (104) with a control button is provided at the upper end of the back panel (103); and a controller (105) is installed on the back of the back panel (103).
3. A piano transport device according to claim 1, characterized in that: There are two sets of crawler wheel assemblies (4) arranged symmetrically; the crawler wheel assemblies (4) comprise a crawler wheel bracket (401), a crawler motor (402), a crawler driving wheel (403), a front crawler passive wheel (404), a rear crawler passive wheel (405), a front crawler track (406) and a rear crawler track (407); the main body of the crawler wheel bracket (401) is a vertical plate (4011); a flat plate body (4012) is fixed to the top of the rear side of the vertical plate (4011); the flat plate body (4012) is hinged to the bottom of the vehicle frame (1); the flat plate body (4012) and the vertical plate (4011) are in an inverted L shape; the front side of the vertical plate (4011) is tilted upward; a crawler track is installed at the middle position of the inner side of the vertical plate (4011); A motor (402) is provided, and a crawler driving wheel (403) is installed at the driving end of the crawler motor (402), and the crawler driving wheel (403) is located outside the vertical plate (4011); on the crawler driving wheel (403) side, a front crawler passive wheel (404) and a rear crawler passive wheel (405) are installed at the front and rear ends of the vertical plate (4011) respectively; a circle of front crawler (406) is installed between the front crawler passive wheel (404) and the crawler driving wheel (403), and a circle of rear crawler (407) is installed between the rear crawler passive wheel (405) and the crawler driving wheel (403); the front crawler (406) and the rear crawler (407) are staggered, and the two front crawlers (406) are between the two rear crawlers (407).
4. The piano transport device according to claim 1, characterized in that: The hydraulic lifting device (3) comprises a hydraulic cylinder (301), a cross-linking rod (302), an articulated shaft I (303) and an articulated shaft II (304). ), the cross-link single piece (302) has two pieces in total, and each connection point of the connecting rods in the two cross-link single pieces (302) and the corresponding upper ends and lower ends of the two cross-link single pieces (302) are hinged through a hinge shaft I (303); the central position corresponding to the cross of each connecting rod in the two cross-link single pieces (302) is hinged through a hinge shaft II (304); the two ends of the lower two hinge shafts I (303) are respectively located in the corresponding lower waist-shaped holes (102) on their sides, and the two ends of the upper two hinge shafts I (303) are respectively located in the corresponding upper waist-shaped holes (201) on their sides; one end of the hydraulic cylinder (301) is hinged to the middle position of the lower side hinge shaft I (303), and the piston end of the hydraulic cylinder (301) is hinged to the middle position of the upper hinge shaft II (304).
5. The piano transport device according to claim 1, characterized in that: The lifting platform (2) is provided with two spaced apart limiting holes (202), a stopper (8) is provided in the limiting hole (202), a protrusion (801) is fixed at both ends of the stopper (8), the lower part of the stopper (8) is inserted into the limiting hole (202), the protrusion (801) abuts against the table surface of the lifting platform (2), and the upper part of the stopper (8) protrudes from the lifting platform (2).
6. The piano transport device according to claim 1, characterized in that: A strap socket (203) is provided at the middle position of the front and rear ends of the lifting platform (2).
7. The piano transport device according to claim 1, characterized in that: The wheels of the cargo-carrying vehicle (6) are universal wheels made of rubber, and a shock absorber (601) is installed between the universal wheels and the vehicle plate of the cargo-carrying vehicle (6).
8. The piano transport device according to claim 1, characterized in that: Two spaced fixing seats (10) are fixed on both left and right sides of the cargo carrier (6), and fixing pins (11) are threadedly connected to the fixing seats (10).