Cart for sound reflecting cover

Abstract

The utility model discloses a cart for a sound reflecting cover, and belongs to the technical field of carts. A cart for a sound reflecting cover comprises a driving wheel set, a frame and a lifting driving assembly. The frame mounting frame is erected on the driving wheel set and moves through the driving wheel set; the output end of the lifting driving assembly is connected with the input end of the frame so as to adjust the height of the frame; the driving wheel set comprises a front driving wheel set and a rear driving wheel set; a pull rod assembly is installed between the front driving wheel set and the rear driving wheel set, the front driving wheel set and the rear driving wheel set are connected through the pull rod assembly and conduct power transmission, the rear driving wheel set is a power wheel set, and the front driving wheel set is a driven wheel set. Through the arrangement, the sound reflecting cover can be easily carried.

Description

Technical Field

[0001] This utility model belongs to the field of trolley technology, and more specifically, relates to a trolley for a soundproof cover. Background Technology

[0002] Currently, the Wenger-like acoustic shields used in theaters are large in size and have thick acoustic shield panels, resulting in high weight and a high center of gravity. Manual handling is quite laborious, and only trolleys can be used for transportation. However, ordinary trolleys pose safety hazards due to the high center of gravity of the acoustic shield panels. Moreover, most of the trolleys used for transportation now use external electricity or hydraulic cylinders, which limits the transportation process and makes the operation complicated.

[0003] Sound reflectors, as devices used to improve acoustic conditions in performance venues, can be divided into fixed and mobile types depending on the nature of the venue. When using a mobile type, it needs to be installed before use, and after use, the disassembled sound reflector needs to be moved to a storage location. Due to issues such as the high center of the sound reflector panel, a trolley for sound reflectors has been developed. The sound reflector trolley is manually pushed, and with the help of the drive wheel assembly, the sound reflector can be moved with ease. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a trolley for a sound reflector, which can make it easy to move the sound reflector.

[0005] This utility model discloses a trolley for transporting acoustic shields, comprising a drive wheel set, a frame, and a lifting drive assembly; the frame is mounted on the drive wheel set and moves via the drive wheel set; the output end of the lifting drive assembly is connected to the input end of the frame to adjust the height of the frame.

[0006] The drive wheel set includes a front drive wheel set and a rear drive wheel set; a tie rod assembly is installed between the front drive wheel set and the rear drive wheel set, and the front drive wheel set and the rear drive wheel set are connected and power is transmitted through the tie rod assembly. The rear drive wheel set is the drive wheel set, and the front drive wheel set is the driven wheel set.

[0007] As a further improvement of this utility model, the lifting drive assembly includes a handle, a lead screw, and a linkage assembly; the handle is installed on the top of the lead screw; the lower end of the lead screw is threadedly connected to one end of the linkage assembly, and the end of the linkage assembly away from the lead screw is installed and connected to the vehicle frame; the linkage assembly is driven by rotating the lead screw through the handle, thereby driving the vehicle frame to rise or fall.

[0008] As a further improvement of this utility model, the linkage assembly includes an adapter, a connector, a first linkage rod, and a second linkage rod; the lower end of the lead screw passes through the adapter and is threadedly connected to the adapter; the first linkage rod is on the same side as the rear drive wheel assembly; the second linkage rod is on the same side as the front drive wheel assembly; one end of the first linkage rod is rotatably connected to the adapter, and the end of the first linkage rod away from the adapter is rotatably connected to one end of the pull rod assembly; the end of the pull rod assembly away from the first linkage rod is rotatably connected to one end of the second linkage rod, and the end of the second linkage rod away from the pull rod assembly is rotatably connected to the vehicle frame.

[0009] As a further improvement of this utility model, the first linkage rod is provided with a bent portion, which is bent in shape; the bent portion of the first linkage rod is rotatably connected to the frame.

[0010] As a further improvement of this utility model, a positioning device is provided on the frame; two sets of positioning devices are provided, which are respectively installed at the front and rear ends of the frame; the positioning device matches the support frame of the reflector.

[0011] As a further improvement of this utility model, the rear drive wheel set includes a left rear drive wheel set and a right rear drive wheel set; a connecting shaft is installed between the left rear drive wheel set and the right rear drive wheel set to link the left rear drive wheel set and the right rear drive wheel set together; a synchro rod can also be detachably installed between the left rear drive wheel set and the right rear drive wheel set, one end of the synchro rod is rotatably connected to the left rear drive wheel set, and the end of the synchro rod away from the left rear drive wheel set is rotatably connected to the right rear drive wheel set.

[0012] As a further improvement of this utility model, both the left and right rear drive wheel sets are equipped with auxiliary braking devices; the auxiliary braking devices include a transmission assembly, a brake assembly, and a braking assembly; the brake assembly is installed on the rear drive wheel set to control the stopping of the wheels on the corresponding rear drive wheel set; the output end of the braking assembly is connected to the input end of the braking assembly to control the opening and closing of the braking assembly; the braking assembly is connected to the corresponding rear drive wheel set through the transmission assembly, and the operation of the transmission assembly is driven by the operation of the rear drive wheel set.

[0013] As a further improvement of this utility model, the transmission assembly includes a connecting rod, a belt, a first wheel, and a second wheel; one end of the connecting rod is fixedly connected to the wheel of the rear drive wheel assembly; the first wheel is fixedly sleeved on the end of the first wheel away from the wheel; the second wheel and the first wheel are connected by belt drive.

[0014] As a further improvement of this utility model, the braking assembly includes a connecting disc, a connecting seat, several connecting posts, a first rotating shaft, and a second rotating shaft; one end of the second rotating shaft passes through the connecting seat and is rotatably connected to the connecting seat; one end of each connecting post passes through the connecting seat and is fixedly connected to the connecting seat; the connecting posts are arranged at intervals around the connecting seat; the end of each connecting post away from the connecting seat passes through the connecting disc and is slidably connected to the connecting disc; one end of the first rotating shaft passes through the connecting disc and is fixedly connected to the connecting disc; a fixed wheel is fixedly sleeved on the outer periphery of the end of the first rotating shaft away from the connecting disc; a connecting wheel is rotatably sleeved on the first rotating shaft between the fixed wheel and the connecting disc; a mounting post is rotatably provided on the top of the connecting wheel; the top of the mounting post away from the connecting wheel is rotatably connected to the vehicle frame; the braking assembly is provided with a brake cable; the end of the brake cable away from the braking assembly is fixedly connected to the fixed wheel.

[0015] The second wheel is fixedly sleeved at the end of the second shaft away from the connecting seat, so as to link the rear drive wheel set and the braking assembly.

[0016] As a further improvement of this utility model, a retaining sleeve is fixedly provided at one end of the second rotating shaft that passes through the connecting seat; a retaining post is fixedly provided on the side of the connecting plate away from the first rotating shaft; the retaining post and the retaining sleeve are arranged opposite to each other and are concentric and coaxial; when the connecting plate and the connecting seat move towards each other, the retaining post and the retaining sleeve move towards each other synchronously until the retaining post is embedded in the retaining sleeve.

[0017] The bottom of the ferrule has one or more arc-shaped slots, and the snap-fit ​​post has an arc-shaped retaining ring corresponding to the slot. The width of the retaining ring is smaller than the width of the slot, and the retaining ring can be embedded in the slot. When the snap-fit ​​post is embedded in the ferrule, the snap-fit ​​post and the ferrule move towards each other. During the rotation of the connecting seat, the retaining ring is embedded in the corresponding slot, so that the connecting plate and the connecting seat are relatively fixed, and the connecting plate rotates with the rotation of the connecting seat.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: the solution of this utility model can realize the lifting or lowering of the sound reflector, effectively preventing the sound reflector from tipping over due to being too high during transportation; it is designed with a locking structure for the sound reflector, which locks the trolley when the four positioning points of the sound reflector trolley match the corresponding points of the sound reflector, effectively preventing the trolley from tipping over due to being not fixed during transportation.

[0019] (1) Easy to operate: The rocker arm can lift a 1.5t acoustic shield with a force of 3kg;

[0020] (2) Safe and reliable: The self-locking structure of the screw nut greatly improves the safety and reliability of the system, eliminates the risk of hydraulic oil leakage and overturning, and avoids the start-stop impact of electric push rod constant speed start;

[0021] (3) Easy steering: Compared with the original triangular universal wheel structure, the fixed wheel is easier to push, which can achieve easy steering and easy start and stop;

[0022] (4) By disengaging the front linkage, two-person (large-angle steering) operation can be achieved, enabling rapid deployment in narrow spaces;

[0023] The present invention also includes an auxiliary braking device, which uses the rotation of the rollers on the rear drive wheel assembly to tighten the brake cable, thereby achieving the braking effect. Attached Figure Description

[0024] Figure 1 This is a side view of the lowest structural part of this utility model;

[0025] Figure 2 This is a side view of the highest structural position of this utility model;

[0026] Figure 3 This is a top view of the structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the rear drive wheel assembly structure of this utility model;

[0028] Figure 5 This is a schematic diagram of the auxiliary braking device of this utility model.

[0029] Explanation of the labels in the diagram:

[0030] 1. Front drive wheel assembly; 2. Tie rod assembly; 3. Frame; 4. Replica support; 5. Locking device; 6. Rear drive wheel assembly; 7. Lifting drive assembly; 71. First linkage rod; 72. Second linkage rod; 10. Auxiliary braking device; 101. Connecting rod; 102. Connecting plate; 103. Connecting seat; 104. Connecting column; 105. First rotating shaft; 106. Second rotating shaft; 107. Snap-fit ​​column; 108. Sleeve; 109. Belt; 1010. Fixed wheel; 1011. Connecting wheel; 1012. Mounting column; 1013. First rotating wheel; 1014. Second rotating wheel; 11. Reflector. Detailed Implementation

[0031] The present invention will be further described in detail below with reference to the embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0032] Specific Implementation Example 1: Please refer to Figure 1-5 A trolley for transporting a sound reflector 11 includes a drive wheel set, a frame, and a lifting drive assembly 7; the frame is mounted on the drive wheel set and moves by running through the drive wheel set; the output end of the lifting drive assembly 7 is installed and connected to the input end of the frame to adjust the height of the frame.

[0033] The drive wheel set includes a front drive wheel set 1 and a rear drive wheel set 6; a tie rod assembly 2 is installed between the front drive wheel set 1 and the rear drive wheel set 6, and the front drive wheel set 1 and the rear drive wheel set 6 are connected and power is transmitted through the tie rod assembly 2. The rear drive wheel set 6 is the drive wheel set, and the front drive wheel set 1 is the driven wheel set.

[0034] The lifting drive assembly 7 is fixedly installed on the frame 3 and rotatably connected to the rear drive wheel set 6. The lifting drive assembly 7 controls the raising or lowering of the frame 3.

[0035] The lifting drive assembly 7 includes a handle, a lead screw, and a linkage assembly; the handle is mounted on the top of the lead screw; the lower end of the lead screw is threadedly connected to one end of the linkage assembly, and the end of the linkage assembly away from the lead screw is mounted and connected to the vehicle frame; the linkage assembly is driven by rotating the lead screw through the handle, thereby raising or lowering the vehicle frame.

[0036] The linkage assembly includes an adapter, a connector, a first linkage rod 71, and a second linkage rod 72. The lower end of the lead screw passes through the adapter and is threadedly connected to it. The first linkage rod 71 is on the same side as the rear drive wheel assembly 6. The second linkage rod 72 is on the same side as the front drive wheel assembly 1. One end of the first linkage rod 71 is rotatably connected to the adapter, and the end of the first linkage rod 71 away from the adapter is rotatably connected to one end of the pull rod assembly 2. The end of the pull rod assembly 2 away from the first linkage rod 71 is rotatably connected to one end of the second linkage rod 72, and the end of the second linkage rod 72 away from the pull rod assembly 2 is rotatably connected to the vehicle frame.

[0037] Preferably, the first linkage rod 71 is provided with a bent portion, and is bent; the bent portion of the first linkage rod 71 is rotatably connected to the frame 3.

[0038] Optionally, a positioning device is provided on the frame 3; two sets of positioning devices are provided and are respectively installed at the front and rear ends of the frame 3; the positioning device matches the support frame of the reflector 11 to assist in installing the reflector 11 on the frame 3.

[0039] Optionally, the frame 3 is equipped with an auxiliary support and a locking device 5. The auxiliary support is used to support the sound reflector 11; the locking device 5 is used to lock the sound reflector 11 onto the frame 3. During transportation, it can prevent the sound reflector from tipping over due to being too large or too heavy.

[0040] The rear drive wheel set 6 includes a left rear drive wheel set and a right rear drive wheel set; a connecting shaft is installed between the left rear drive wheel set and the right rear drive wheel set to link the left rear drive wheel set and the right rear drive wheel set together; a detachable synchronizing rod is also installed between the left rear drive wheel set and the right rear drive wheel set, one end of the synchronizing rod is rotatably connected to the left rear drive wheel set, and the end of the synchronizing rod away from the left rear drive wheel set is rotatably connected to the right rear drive wheel set.

[0041] Specific Embodiment Two: Unlike Specific Embodiment One, both the left and right rear drive wheel sets are equipped with auxiliary braking devices 10. The auxiliary braking device 10 includes a transmission assembly, a brake assembly, and a braking assembly. The brake assembly is installed on the rear drive wheel set 6 to control the stopping of the wheels on the corresponding rear drive wheel set. The output end of the braking assembly is connected to the input end of the braking assembly to control the opening and closing of the braking assembly. The braking assembly is connected to the corresponding rear drive wheel set through the transmission assembly, and the operation of the transmission assembly is driven by the operation of the rear drive wheel set 6.

[0042] The transmission assembly includes a connecting rod 101, a belt 109, a first pulley 1013, and a second pulley 1014; one end of the connecting rod is fixedly connected to the wheel of the rear drive wheel assembly 6; the first pulley 1013 is fixedly sleeved on the end of the first pulley 1013 away from the wheel; the second pulley 1014 and the first pulley 1013 are connected by the belt 109.

[0043] The braking assembly includes a connecting disc 102, a connecting seat 103, a plurality of connecting posts 104, a first rotating shaft 105, and a second rotating shaft 106. One end of the second rotating shaft 106 passes through the connecting seat 103 and is rotatably connected to the connecting seat 103. One end of each connecting post 104 passes through the connecting seat 103 and is fixedly connected to the connecting seat 103. The connecting posts 104 are arranged at intervals around the connecting seat 103. The end of each connecting post 104 away from the connecting seat 103 passes through the connecting disc 102 and is slidably connected to the connecting disc 102. One end of the first rotating shaft 105 passes through the connecting disc. 102, fixedly connected to the connecting plate 102; a fixed wheel 1010 is fixedly sleeved on the outer periphery of the end of the first rotating shaft 105 away from the connecting plate 102; a connecting wheel 1011 is rotatably sleeved on the first rotating shaft 105 between the fixed wheel 1010 and the connecting plate 102; a mounting post 1012 is rotatably provided on the top of the connecting wheel 1011; the top of the end of the mounting post 1012 away from the connecting wheel 1011 is rotatably connected to the frame 3; the brake assembly is provided with a brake cable; the end of the brake cable away from the brake assembly is fixedly connected to the fixed wheel 1010.

[0044] The second rotating wheel 1014 is fixedly sleeved on the end of the second rotating shaft 106 away from the connecting seat 103, so as to link the rear drive wheel set 6 and the braking assembly.

[0045] A retainer 108 is fixedly provided at one end of the second rotating shaft 106 that passes through the connecting seat 103; a retaining post 107 is fixedly provided on the side of the connecting plate 102 away from the first rotating shaft 105; the retaining post 107 and the retaining post 108 are arranged opposite each other and are concentric and coaxial; when the connecting plate 102 and the connecting seat 103 move towards each other, the retaining post 107 and the retaining post 108 move towards each other synchronously until the retaining post 107 is embedded in the retaining post 108.

[0046] Preferably, the bottom of the sleeve 108 has one or more arc-shaped slots, and the snap-fit ​​post 107 is provided with an arc-shaped retaining ring corresponding to the slot; the width of the retaining ring is smaller than the width of the slot, and the retaining ring can be embedded in the slot; when the snap-fit ​​post 107 is embedded in the sleeve 108, the snap-fit ​​post 107 and the sleeve 108 move towards each other, and during the rotation of the connecting seat 103, the retaining ring is embedded in the corresponding slot, so that the connecting plate 102 and the connecting seat 103 are relatively fixed, and the connecting plate 102 rotates with the rotation of the connecting seat 103.

[0047] The braking components are common types such as cantilever brakes and overhead brakes, which will not be described in detail here.

[0048] The above description is merely a preferred embodiment of this application; however, the scope of protection of this application is not limited thereto; any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and its improved concept, should be covered within the scope of protection of this application.

Claims

1. A trolley for transporting a sound reflector (11), characterized in that: Includes a drive wheel set, a frame, and a lifting drive assembly (7); the frame is mounted on the drive wheel set and moves by running through the drive wheel set; the output end of the lifting drive assembly (7) is connected to the input end of the frame to adjust the height of the frame; The drive wheel set includes a front drive wheel set (1) and a rear drive wheel set (6); a tie rod assembly (2) is installed between the front drive wheel set (1) and the rear drive wheel set (6). The front drive wheel set (1) and the rear drive wheel set (6) are connected and power is transmitted through the tie rod assembly (2). The rear drive wheel set (6) is the drive wheel set, and the front drive wheel set (1) is the driven wheel set.

2. The trolley for a soundproof cover according to claim 1, characterized in that: The lifting drive assembly (7) includes a handle, a lead screw, and a linkage assembly; the handle is installed on the top of the lead screw; the lower end of the lead screw is threadedly connected to one end of the linkage assembly, and the end of the linkage assembly away from the lead screw is installed and connected to the vehicle frame; the linkage assembly drives the lead screw by rotating the handle, thereby driving the vehicle frame to rise or fall.

3. A trolley for a soundproof cover according to claim 2, characterized in that: The linkage assembly includes an adapter, a connector, a first linkage rod (71), and a second linkage rod (72); the lower end of the lead screw passes through the adapter and is threadedly connected to the adapter; the first linkage rod (71) is on the same side as the rear drive wheel assembly (6); the second linkage rod (72) is on the same side as the front drive wheel assembly (1); one end of the first linkage rod (71) is rotatably connected to the adapter, and the end of the first linkage rod (71) away from the adapter is rotatably connected to one end of the tie rod assembly (2); the end of the tie rod assembly (2) away from the first linkage rod (71) is rotatably connected to one end of the second linkage rod (72), and the end of the second linkage rod (72) away from the tie rod assembly (2) is rotatably connected to the vehicle frame.

4. A trolley for a soundproof cover according to claim 3, characterized in that: The first linkage rod (71) is provided with a bent part, which is bent; the bent part of the first linkage rod (71) is rotatably connected to the frame (3).

5. A trolley for a soundproof cover according to claim 1, characterized in that: A positioning device is provided on the frame (3); two sets of positioning devices are provided and installed at the front and rear ends of the frame (3); the positioning device matches the support frame of the reflector (11).

6. A trolley for a soundproof cover according to claim 1, characterized in that: The rear drive wheel assembly (6) includes a left rear drive wheel assembly and a right rear drive wheel assembly; a connecting shaft is installed between the left rear drive wheel assembly and the right rear drive wheel assembly to link the left rear drive wheel assembly and the right rear drive wheel assembly together; a sync rod can also be detachably installed between the left rear drive wheel assembly and the right rear drive wheel assembly, one end of the sync rod is rotatably connected to the left rear drive wheel assembly, and the end of the sync rod away from the left rear drive wheel assembly is rotatably connected to the right rear drive wheel assembly.

7. A trolley for a soundproof cover according to claim 6, characterized in that: Both the left and right rear drive wheel sets are equipped with auxiliary braking devices (10); the auxiliary braking device (10) includes a transmission assembly, a brake assembly and a braking assembly; the brake assembly is installed on the rear drive wheel set (6) to control the stopping of the wheels set on the corresponding rear drive wheel set; the output end of the braking assembly is installed and connected to the input end of the braking assembly to control the opening and closing of the braking assembly; the braking assembly is installed and connected to the corresponding rear drive wheel set through the transmission assembly, and the operation of the transmission assembly is driven by the operation of the rear drive wheel set (6).

8. A trolley for a soundproof cover according to claim 7, characterized in that: The transmission assembly includes a connecting rod (101), a belt (109), a first pulley (1013), and a second pulley (1014); one end of the connecting rod is fixedly connected to the wheel of the rear drive wheel assembly (6); the first pulley (1013) is fixedly sleeved on the end of the first pulley (1013) away from the wheel; the second pulley (1014) and the first pulley (1013) are connected by the belt (109).

9. A trolley for a soundproof cover according to claim 8, characterized in that: The braking assembly includes a connecting disc (102), a connecting seat (103), several connecting posts (104), a first rotating shaft (105), and a second rotating shaft (106); one end of the second rotating shaft (106) passes through the connecting seat (103) and is rotatably connected to the connecting seat (103); one end of the connecting post (104) passes through the connecting seat (103) and is fixedly connected to the connecting seat (103); the connecting posts (104) are arranged at intervals around the connecting seat (103); the end of the connecting post (104) away from the connecting seat (103) passes through the connecting disc (102) and is slidably connected to the connecting disc (102); one end of the first rotating shaft (105) passes through... A connecting plate (102) is fixedly connected to the connecting plate (102); a fixed wheel (1010) is fixedly sleeved on the outer periphery of the end of the first rotating shaft (105) away from the connecting plate (102); a connecting wheel (1011) is rotatably sleeved on the first rotating shaft (105) between the fixed wheel (1010) and the connecting plate (102); a mounting post (1012) is rotatably provided on the top of the connecting wheel (1011); the top of the end of the mounting post (1012) away from the connecting wheel (1011) is rotatably connected to the frame (3); a brake cable is provided on the brake assembly; the end of the brake cable away from the brake assembly is fixedly connected to the fixed wheel (1010); The second wheel (1014) is fixedly sleeved on the end of the second shaft (106) away from the connecting seat (103) to link the rear drive wheel set (6) and the braking assembly.

10. A trolley for a soundproof cover according to claim 9, characterized in that: A retainer (108) is fixedly provided at one end of the second rotating shaft (106) that passes through the connecting seat (103); a retaining post (107) is fixedly provided on the side of the connecting plate (102) away from the first rotating shaft (105); the retaining post (107) and the retaining post (108) are arranged opposite to each other and are concentric and coaxial; when the connecting plate (102) and the connecting seat (103) move towards each other, the retaining post (107) and the retaining post (108) move towards each other synchronously until the retaining post (107) is embedded in the retaining post (108); The bottom of the sleeve (108) has one or more arc-shaped slots, and the snap-fit ​​post (107) is provided with an arc-shaped snap ring corresponding to the slot; the width of the snap ring is smaller than the width of the slot, and the snap ring can be embedded in the slot; when the snap-fit ​​post (107) is embedded in the sleeve (108), the snap-fit ​​post (107) and the sleeve (108) move towards each other. During the rotation of the connecting seat (103), the snap ring is embedded in the corresponding slot, so that the connecting plate (102) and the connecting seat (103) are relatively fixed, and the connecting plate (102) rotates with the rotation of the connecting seat (103).

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