Speed measuring device for tricycle production

Abstract

The utility model discloses a speed measuring device for tricycle production, which belongs to the technical field of speed measuring devices and comprises two symmetrically arranged bases, clamping mechanisms arranged on the side surfaces of the bases, a speed measuring mechanism mounted on the clamping mechanisms, the speed measuring mechanism comprises a group of rotating shafts, friction belts sleeved on the rotating shafts, chains fixedly connected with the inner sides of the friction belts, and the rotating shafts are connected with the chains. A transmission shaft is meshed with the chain. The device has the beneficial effects that the transmission mechanism and the speed measuring mechanism are arranged, the transmission mechanism is lifted through the fork shear lifter and the mounting seat, so that the rotating shaft and the friction belt bear the weight of the tricycle body, the friction force of actual walking of the tricycle can be simulated, and the speed under the actual condition can be measured more accurately; the transmission shaft drives the winding wheel to rotate, the winding wheel pulls the speed measurement roll, the actual walking length of the wheel is accurately measured according to the length of a mark left on the speed measurement roll by the roll printing shaft within a certain time, the accurate vehicle speed is calculated, and the speed measurement effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of speed measuring devices, in particular to a speed measuring device for tricycle production. Background Art

[0002] A tricycle is a three-wheeled transport tool commonly used in production and life for transporting goods or people. After the production of existing tricycles, the driving speed of the tricycles needs to be tested and made to comply with corresponding factory regulations.

[0003] After searching, the Chinese patent announcement number CN212845452U discloses a speed measuring device for electric tricycle production. The patent includes a body, a top plate and a fixed plate. The top plate is located above the fixed plate, and the bottom is fixedly connected to the fixed plate through four symmetrically arranged first electric push rods. The body includes two symmetrically arranged wheel hubs and is located on the top of the top plate. The left side of the front side of the fixed plate is fixedly connected to a connecting plate through a second electric push rod. A moving mechanism is arranged on the front side of the connecting plate, a U-shaped plate is arranged on the front side of the wheel hub, a rotating rod is fixedly arranged on the front side of the U-shaped plate, a paintbrush is fixedly arranged on the rod wall of the rotating rod located on the front side of the U-shaped plate, a transmission mechanism is arranged on the rod wall of the rotating rod, a whiteboard is arranged above the fixed plate, the bottom of the paintbrush is in contact with the whiteboard, and a clamping mechanism is arranged in the U-shaped plate. The device can conveniently and quickly test the driving speed of an electric tricycle within a certain range. However, when in use, the device can only measure the idling speed of the tricycle, and the wheel speed also needs to be calculated. The test results are affected by the actual influence of the wheels, resulting in deviations in speed measurement, and its practicality needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide a speed measuring device for tricycle production in order to solve the above problems.

[0005] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0006] A speed measuring device for tricycle production comprises two symmetrically arranged bases, a vertical plate fixedly connected to the top of the base, two elastic seats symmetrically arranged in the vertical plate, a retaining plate rotatably mounted on one side of the vertical plate, a lifting mechanism mounted on the base, a transmission mechanism mounted on the lifting mechanism, a retaining mechanism mounted on the side of the base, a speed measuring mechanism mounted on the retaining mechanism, the speed measuring mechanism comprising a group of rotating shafts, a friction belt sleeved on the rotating shaft, a chain fixedly connected to the inner side of the friction belt, a transmission shaft meshed on the chain, the meshing part of the transmission shaft and the chain being a sprocket, a winding wheel fixedly connected to the other end of the transmission shaft, a speed measuring roll wound on the winding wheel, and the speed measuring mechanism also comprises a rolling shaft for leaving an imprint on the speed measuring roll.

[0007] Preferably, the positioning mechanism includes a connecting seat, and the speed measuring mechanism includes a winding seat, which is fixedly connected to one side of the top of the connecting seat, one end of the speed measuring reel is wound in the winding seat, and an electric motor is fixedly connected to the top of the connecting seat away from the winding seat, and a recovery reel is fixedly connected to the output end of the motor, and the recovery reel is used to wind up the speed measuring reel with marks.

[0008] Preferably, a receiving groove is provided on the rotating shaft, and the receiving groove is used to ensure that the chain moves synchronously with the friction belt.

[0009] Preferably, the speed measuring mechanism includes an adjusting screw, which is rotatably connected to the side wall of the connecting seat, and an adjusting block is threadedly connected to the adjusting screw, and the adjusting block is slidably connected to the side wall of the connecting seat, and the rolling shaft is fixedly connected to the side of the adjusting block.

[0010] Preferably, a lifting block is slidably connected to the connecting seat, a locking bolt is threadedly connected to one side of the lifting block, a cylinder is fixedly connected to the side of the lifting block, a rotating disk is fixedly connected to the output end of the cylinder, a positioning seat is rotatably connected to one side of the rotating disk, and a positioning head for limiting the wheel is detachably connected to the positioning seat through a thread.

[0011] Preferably, a spiral piece is fixedly connected to the winding wheel, and the spiral piece is used to guide the middle section of the speed measuring roll.

[0012] Preferably, the lifting mechanism includes a fork-scissor lift, which is installed on the top of the base, and a mounting seat is fixedly connected to the top of the fork-scissor lift. The rotating shaft is rotatably connected to the mounting seat, and the transmission shaft passes through the rotating shaft and is rotatably connected thereto.

[0013] Preferably, two fork scissor lifts are equipped with bidirectional screw rods for adjusting the height of mounting seats on both sides.

[0014] The beneficial effects are as follows: a transmission mechanism and a speed measuring mechanism are provided, and the transmission mechanism is lifted by a fork-scissor lift and a mounting seat, so that the rotating shaft and the friction belt bear the weight of the vehicle body, and the friction force of the actual walking of the tricycle can be simulated, and the speed under actual conditions can be measured more accurately. Through the cooperation of the friction belt and the transmission shaft, the transmission shaft drives the winding wheel to rotate, and the winding wheel pulls the speed measuring roll. According to the length of the mark left by the rolling shaft on the speed measuring roll within a certain period of time, the actual walking length of the wheel can be accurately measured, and the speed measuring effect is good.

[0015] The additional technical features and advantages of the present invention will be more clearly explained in the following description, or can be understood through the specific practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of a speed measuring device for tricycle production according to the utility model;

[0018] Figure 2 It is a front view of a speed measuring device for tricycle production according to the utility model;

[0019] Figure 3 This is a schematic diagram of the coordination of the lifting mechanism, transmission mechanism and speed measuring mechanism of a speed measuring device for tricycle production described in the utility model;

[0020] Figure 4 This is a schematic diagram of the connection between the transmission mechanism and the speed measuring mechanism of a speed measuring device for tricycle production described in the utility model;

[0021] Figure 5 It is a front view of the transmission mechanism and the speed measuring mechanism of the speed measuring device for tricycle production described in the utility model;

[0022] Figure 6 It is a side sectional view of the position of the receiving groove of a speed measuring device for tricycle production according to the utility model;

[0023] Figure 7 This is a schematic diagram of the position of the transmission mechanism and the speed measuring mechanism of a speed measuring device for tricycle production described in the utility model;

[0024] Figure 8 The utility model is a schematic diagram of a locking mechanism of a speed measuring device for tricycle production.

[0025] The reference numerals in the accompanying drawings are as follows: 101, base; 102, vertical plate; 103, elastic seat; 104, positioning plate; 201, fork scissors lift; 202, bidirectional screw rod; 203, mounting seat; 301, rotating shaft; 302, accommodating groove; 303, friction belt; 304, chain; 305, transmission shaft; 401, winding seat; 402, speed measuring reel; 403, winding wheel; 404, spiral sheet; 405, motor; 406, recovery reel; 407, adjusting screw rod; 408, adjusting block; 409, rolling shaft; 501, connecting seat; 502, lifting block; 503, locking bolt; 504, cylinder; 505, rotating disk; 506, positioning seat; 507, positioning head. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0028] The utility model is further described below in conjunction with the accompanying drawings:

[0029] like Figure 1 — Figure 8 As shown, a speed measuring device for tricycle production includes two symmetrically arranged bases 101, a vertical plate 102 is welded on the top of the base 101, and two elastic seats 103 symmetrically arranged in the vertical plate 102. When measuring the speed, the rear driving wheel of the tricycle is located at the elastic seat 103, and the frame and the front body are lifted up by the hydraulic cylinder (not shown in the figure), and a clamping plate 104 is rotatably installed on one side of the vertical plate 102, a lifting mechanism is installed on the base 101, and a transmission mechanism is arranged on the lifting mechanism, and a clamping mechanism is arranged on the side of the base 101, and a speed measuring mechanism is installed on the clamping mechanism, and the speed measuring mechanism includes a set of rotating shafts 301, and a friction belt 303 is sleeved on the rotating shaft 301, and a chain 304 is bonded to the inner side of the friction belt 303, and a transmission mechanism is meshed on the chain 304. The shaft 305, the part where the transmission shaft 305 meshes with the chain 304 is a sprocket, and the other end of the transmission shaft 305 is connected to a winding wheel 403 by bolts. The diameter of the winding wheel 403 is the same as the diameter of the transmission shaft 305, and a speed measuring roll 402 is wound on the winding wheel 403. The speed measuring roll 402 is specifically a white rubber belt. The speed measuring mechanism also includes a rolling shaft 409 for leaving a mark on the speed measuring roll 402. The end of the rolling shaft 409 can be specifically a graphite block. When the speed measuring roll 402 moves, the rolling shaft 409 leaves a mark on the speed measuring roll 402, and the chain 304 moves synchronously with the friction belt 303. The chain 304 drives the transmission shaft 305 to rotate, ensuring that the linear velocity of the edge position of the transmission shaft 305 is consistent with the linear velocity of the friction belt 303.

[0030] In this embodiment, the locking mechanism includes a connecting seat 501, and the speed measuring mechanism includes a winding seat 401. The winding seat 401 is connected to one side of the top of the connecting seat 501 by bolts, and one end of the speed measuring roll 402 is wound in the winding seat 401. The top of the connecting seat 501 away from the winding seat 401 is bolted to a motor 405, and the output end of the motor 405 is bolted to a recovery reel 406. The recovery reel 406 is used to wind up the speed measuring roll 402 with marks. Before speed measurement, the speed measuring roll 402 is wound on the winding seat 401, and one end of the speed measuring roll 402 is pulled up and wound around the winding reel 403 for one circle, and then extended to the recovery reel 406 to obtain the accurate linear speed of the edge position of the transmission shaft 305. A receiving groove 302 is opened on the rotating shaft 301, and the receiving groove 302 is used to ensure that the chain 304 moves synchronously with the friction belt 303.

[0031] In this embodiment, the speed measuring mechanism includes an adjusting screw 407, which is rotatably connected to the side wall of the connecting seat 501. An adjusting block 408 is threadedly connected to the adjusting screw 407, and the adjusting block 408 is slidably connected to the side wall of the connecting seat 501. A rolling shaft 409 is connected to the side of the adjusting block 408 by bolts. The end of the rolling shaft 409 is located on the surface of the speed measuring roll 402. The middle position of the rolling shaft 409 has a certain elasticity. When the speed measuring roll 402 is pulled by the winding wheel 403, the rolling shaft 409 can leave a mark on the speed measuring roll 402, which is convenient for obtaining the pulling length of the speed measuring roll 402 over a period of time.

[0032] In this embodiment, a lifting block 502 is slidably connected to the connecting seat 501, a locking bolt 503 is threadedly connected to one side of the lifting block 502, a cylinder 504 is bolted to the side of the lifting block 502, a rotating disk 505 is bolted to the output end of the cylinder 504, a locking seat 506 is rotatably connected to one side of the rotating disk 505, a locking head 507 for limiting the wheel is detachably connected to the locking seat 506 through a thread, and the locking mechanism is set to prevent the wheel from running off the track when driving the friction belt 303 to rotate.

[0033] In this embodiment, a spiral piece 404 is welded on the winding wheel 403, and the spiral piece 404 is used to guide the middle section of the speed measuring roll 402. When the speed measuring roll 402 moves on the winding wheel 403, the spiral piece 404 guides the speed measuring roll 402 to prevent the speed measuring roll 402 from slipping.

[0034] In this embodiment, the lifting mechanism includes a fork scissors lift 201, which is installed on the top of the base 101. The top of the fork scissors lift 201 is connected to a mounting seat 203 by bolts. The rotating shaft 301 is rotatably connected to the mounting seat 203, and the transmission shaft 305 passes through the rotating shaft 301 and is rotatably connected thereto.

[0035] In this embodiment, a bidirectional screw rod 202 for adjusting the height of the mounting seats 203 on both sides is installed on the two fork scissor lifts 201. The threaded portion of the bidirectional screw rod 202 is threadedly connected to the adjustment portion of the fork scissor lift 201, and the bearing portion of the bidirectional screw rod 202 is rotatably connected to the hinge position of the fork scissor lift 201. By rotating the bidirectional screw rod 202, the two threaded portions with different rotation directions can cause the two fork scissor lifts 201 to rise simultaneously.

[0036] Working principle: When the device is in use, first open the card plate 104, move the tricycle to the base 101, and insert the rear driving wheel axle of the tricycle into the vertical plate 102. The elastic seat 103 on the lower side first supports the axle. At this time, by rotating the bidirectional screw rod 202, the two threaded parts with different rotation directions make the two fork shear lifters 201 rise at the same time. The fork shear lifters 201 lift the mounting seat 203, and the rotating shaft 301 and the friction belt 303 on the mounting seat 203 lift the wheel until there is no force on the elastic seat 103 supporting the wheel. Then, the lifting block 502 is raised to a suitable height, so that the center of the rotating disk 505 is aligned with the axis of the wheel, and the locking bolt 503 is used to lock the connecting seat 501. Then, the cylinder 504 is used to push the rotating disk 505, and the clamping seat 506 extends into the hole of the wheel. The clamping head 507 is screwed into the clamping seat 506 to clamp the wheel horizontally. At this time, the wheel gravity of the tricycle is completely carried by the friction belt 303 and can only rotate. Before speed measurement, the speed measuring roll 402 is wound on the winding seat 401, and one end of the speed measuring roll 402 is pulled up and wound around the winding wheel 403. After that, it extends to the recovery reel 406 to obtain the accurate linear speed of the edge position of the transmission shaft 305. At this time, the tricycle is started, and the driving wheel of the tricycle drives the friction belt 303 to move around the rotating shaft 301, and the friction belt 303 drives the chain 304 to move synchronously. The horizontal parts of the friction belt 303 and the chain 304 have the same linear speed, and the chain 304 drives the transmission shaft 305 to rotate, and the transmission shaft 305 drives the winding wheel 403 to rotate. When the speed measuring roll 402 is moving, the rolling shaft 409 leaves an imprint on the speed measuring roll 402. Since the speed measuring roll 402 is The winding wheel 403 is wound only once in a spiral shape. The mark of the rolling shaft 409 on the speed measuring roll 402 can accurately determine the movement length of the speed measuring roll 402 within a period of time. Therefore, the linear velocity of the edge of the winding wheel 403, i.e., the speed of the wheel, can be accurately obtained. If the height of the lifting block 502, the adjusting block 408 and the fork-scissor lift 201 are raised synchronously, the elastic seat 103 at the upper end can be compressed by the axle to increase the pressure of the wheel on the friction belt 303, thereby measuring the speed of the tricycle when loaded. The function is comprehensive.

[0037] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles 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 speed measuring device for tricycle production, comprising two symmetrically arranged bases (101), the top of the base (101) is fixedly connected with a vertical plate (102), two vertically symmetrical elastic seats (103) are arranged in the vertical plate (102), a locking plate (104) is rotatably mounted on one side of the vertical plate (102), a lifting mechanism is installed on the base (101), a transmission mechanism is arranged on the lifting mechanism, a locking mechanism is arranged on the side of the base (101), and a speed measuring mechanism is installed on the locking mechanism, characterized in that: The speed measuring mechanism comprises a set of rotating shafts (301), a friction belt (303) is sleeved on the rotating shafts (301), a chain (304) is fixedly connected to the inner side of the friction belt (303), a transmission shaft (305) is meshed on the chain (304), the meshing part of the transmission shaft (305) and the chain (304) is a sprocket, the other end of the transmission shaft (305) is fixedly connected to a winding wheel (403), a speed measuring roll (402) is wound on the winding wheel (403), and the speed measuring mechanism further comprises a rolling shaft (409) for leaving an imprint on the speed measuring roll (402).

2. A speed measuring device for tricycle production according to claim 1, characterized in that: The positioning mechanism comprises a connecting seat (501), and the speed measuring mechanism comprises a winding seat (401), the winding seat (401) is fixedly connected to one side of the top of the connecting seat (501), one end of the speed measuring roll (402) is wound inside the winding seat (401), and a motor (405) is fixedly connected to the top of a side of the connecting seat (501) away from the winding seat (401), and a recovery reel (406) is fixedly connected to the output end of the motor (405), and the recovery reel (406) is used to wind up the speed measuring roll (402) with a mark.

3. A speed measuring device for tricycle production according to claim 1, characterized in that: The rotating shaft (301) is provided with a receiving groove (302), and the receiving groove (302) is used to ensure that the chain (304) moves synchronously with the friction belt (303).

4. A speed measuring device for tricycle production according to claim 2, characterized in that: The speed measuring mechanism comprises an adjusting screw (407), wherein the adjusting screw (407) is rotatably connected to the side wall of the connecting seat (501), an adjusting block (408) is threadedly connected to the adjusting screw (407), and the adjusting block (408) is slidably connected to the side wall of the connecting seat (501), and the rolling shaft (409) is fixedly connected to the side of the adjusting block (408).

5. A speed measuring device for tricycle production according to claim 2, characterized in that: A lifting block (502) is slidably connected to the connection seat (501), a locking bolt (503) is threadedly connected to one side of the lifting block (502), a cylinder (504) is fixedly connected to the side of the lifting block (502), a rotating disk (505) is fixedly connected to the output end of the cylinder (504), a locking seat (506) is rotatably connected to one side of the rotating disk (505), and a locking head (507) for limiting the position of the wheel is detachably connected to the locking seat (506) through a thread.

6. A speed measuring device for tricycle production according to claim 1, characterized in that: The winding wheel (403) is fixedly connected with a spiral piece (404), and the spiral piece (404) is used to guide the middle section of the speed measuring roll (402).

7. A speed measuring device for tricycle production according to claim 1, characterized in that: The lifting mechanism comprises a fork-scissor lift (201), wherein the fork-scissor lift (201) is mounted on the top of the base (101), a mounting seat (203) is fixedly connected to the top of the fork-scissor lift (201), the rotating shaft (301) is rotatably connected to the mounting seat (203), and the transmission shaft (305) passes through the rotating shaft (301) and is rotatably connected thereto.

8. A speed measuring device for tricycle production according to claim 7, characterized in that: The two fork-scissor lifts (201) are provided with bidirectional screw rods (202) for adjusting the heights of the mounting seats (203) on both sides.

Images