Campus garbage cleaning device

Abstract

The invention discloses a campus garbage cleaning device, and relates to the technical field of garbage cleaning equipment, the campus garbage cleaning device comprises a cart body, a dust collection mechanism used for collecting ground garbage is arranged at the position, close to the head, of the cart body, and a cleaning mechanism used for cleaning ground adhesion objects is arranged at the position, close to the tail, of the cart body; the cleaning mechanism is matched with the dust collection mechanism, when the cleaning mechanism encounters an adhesive object on the ground, the adhesive object is firstly scooped up by the cleaning mechanism, and then the adhesive object is sucked and collected by the dust collection mechanism. The cleaning mechanism can shovel objects adhering to the ground, then the dust suction mechanism is matched with the cleaning mechanism to suck and collect the objects adhering to the ground, the problem that the objects adhering to the ground in the university campus are not easy to clean is solved, and the cleaning efficiency and the cleaning effect of the road surface of the university campus are improved.

Description

Technical Field

[0001] The invention relates to the technical field of garbage cleaning equipment, in particular to a campus garbage cleaning device. Background Art

[0002] The roads on university campuses are mostly flat. In order to ensure the cleanliness of the campus environment, the roads need to be cleaned regularly. The existing cleaning method is mostly manual cleaning with a broom. Larger garbage on the ground (such as food bags, plastic bottles, and small stones, etc.) is easier to clean. However, garbage such as leaves and scraps of paper on the ground will adhere to the ground if the ground is wet, making it difficult to clean. Items such as chewing gum and tape are more likely to adhere to the ground and form adhesions. In this way, cleaning staff can hardly sweep them away with a broom, resulting in reduced cleaning efficiency and poor cleaning results. Document number is CN207193860 U's Chinese utility model patent, the authorization announcement date is April 6, 2018, the patent name is a garbage cleaning cart, which discloses a rectangular vehicle board, a handlebar fixed on the rear end of the vehicle board, and running wheels rotatably arranged at the four end corners of the vehicle board. The vehicle board is also equipped with a battery, a main fan, a collecting bucket, and a dust blowing fan. The battery is used to power the main fan and the dust blowing fan. The main fan is connected to the collecting bucket. A special-shaped suction pipe is installed on the collecting bucket. The special-shaped suction pipe is a conical pipe with a large front port and a small rear port. The rear port of the special-shaped suction pipe is connected to the collecting bucket. The front port of the special-shaped suction pipe extends beyond the front end of the vehicle board. The dust blowing fan is connected to an exhaust pipe. The exhaust port of the exhaust pipe at its front end is located behind the front port of the special-shaped suction pipe, and the exhaust port faces one side of the vehicle board. It adopts a dust blowing fan scheme to absorb garbage on the road surface. However, it still cannot handle ground adhesions, that is, the dust suction fan cannot absorb and clean up the ground adhesions. Therefore, it is necessary to propose a cleaning solution to solve the problem that the ground adhesion in the university campus is not easy to clean. Summary of the invention

[0003] The purpose of the present invention is to provide a campus garbage cleaning device in order to solve the above-mentioned problems.

[0004] The present invention achieves the above-mentioned purpose through the following technical solutions:

[0005] A campus garbage cleaning device comprises a cart body, wherein a dust suction mechanism for collecting garbage on the ground is arranged near the head of the cart body, and a cleaning mechanism for cleaning ground adhesions is arranged near the tail of the cart body; the cleaning mechanism cooperates with the dust suction mechanism, and when encountering ground adhesions, the cleaning mechanism first scoops up the adhesions, and then the dust suction mechanism sucks and collects the adhesions.

[0006] Preferably, the dust suction mechanism includes a collecting bucket, which is fixedly mounted on the trolley body, a mounting frame is fixedly provided at the bottom of the trolley body near the collecting bucket, a duct with an adjustable inclination angle is provided on the mounting frame, a dust suction hopper is fixedly provided at one end of the duct away from the trolley body, the dust suction hopper is close to the cleaning mechanism, a sealing cover is fixedly provided on the top of the collecting bucket, a motor is fixedly provided at the bottom of the sealing cover, an impeller is fixedly provided on the output shaft of the motor, the motor is provided with a protective cover located at the outer cover of the impeller, an air outlet is provided on the sealing cover corresponding to the position of the motor, a dust inlet is provided on the side of the collecting bucket close to the mounting frame, the dust inlet is connected to the duct through a hose, a dust filter bag is provided inside the collecting bucket, and the opening of the dust filter bag is fixedly sleeved at the dust inlet position.

[0007] Preferably, the mounting frame is provided with an adjusting bolt, the adjusting bolt is provided with a fixing clamp, and the fixing clamp clamps the conduit.

[0008] Preferably, the sealing cover is detachably fixedly connected to the collecting bucket by means of a snap or a thread.

[0009] Preferably, the length of the dust hopper is matched with the length of the cleaning mechanism.

[0010] Preferably, the cleaning mechanism includes a mounting rod and a scraper, one end of the mounting rod is fixedly mounted on the trolley body, the other end of the mounting rod is inclined toward the head direction of the trolley body and a first mounting plate is fixedly arranged thereon, a second mounting plate is fixedly arranged on the top of the scraper, a guide sleeve is fixedly arranged on the side of the second mounting plate opposite to the first mounting plate, a guide rod is fixedly arranged on the side of the first mounting plate opposite to the second mounting plate, the guide rod extends into the guide sleeve and the two are slidably matched, and a first spring is provided on the outer sleeve of the guide rod and the guide sleeve.

[0011] Preferably, a garbage storage box is provided on the top of the scraper, a card block is fixedly provided on the top of the scraper, a card slot is provided at a position corresponding to the garbage storage box, the scraper and the garbage storage box are detachably fixedly connected through the cooperation of the card block and the card slot, a joint rod is fixedly provided on the top of the garbage storage box, a groove is provided on the side of the joint rod away from the garbage storage box, a second spring and a protrusion are sequentially provided in the groove, the protrusion extends out of the groove and can slide along the groove, a joint block is fixedly provided on the side of the second mounting plate away from the guide sleeve, a joint groove is provided on the joint block, the joint groove cooperates with the joint rod, and a through groove is provided on the side of the joint block corresponding to the position of the protrusion.

[0012] Preferably, a power supply is fixedly provided on the cart body near the tail position, a bracket is fixedly provided on the cart body near the tail position, and a control switch is fixedly provided on the top of the bracket; the dust suction mechanism is electrically connected to the power supply and the control switch.

[0013] Preferably, a cover plate is fixedly provided on the cart body near the dust suction mechanism and the cleaning mechanism, an observation window is provided on the cover plate, and transparent glass is provided at the position of the observation window.

[0014] Preferably, an adjustment handle is fixedly provided near the rear of the cart body, and the adjustment handle includes a fixing rod. There are two fixing rods distributed in parallel, and the two fixing rods are inclined toward the head direction away from the cart body. Slide grooves are provided in the two fixing rods, and telescopic rods are slidably provided in the two slide grooves. Adjustment screws are provided on the side positions of the two fixing rods away from one end of the cart body, and connecting rods are fixedly provided on the side positions of the two telescopic rods away from one end of the fixed rods.

[0015] The beneficial effects of the present invention are as follows: (1) The cleaning mechanism of the present invention can scoop up the adhesions on the ground, and then the dust suction mechanism cooperates with it to suck and collect the adhesions, thereby solving the problem that the adhesions on the ground in the university campus are difficult to clean, and improving the cleaning efficiency and cleaning effect of the university campus road surface; (2) The garbage temporary storage box on the cleaning mechanism can collect the garbage that is heavy and difficult to be sucked up by the dust suction mechanism, and then clean them together, further improving the cleaning efficiency and cleaning effect of the university campus road surface; (3) The scraper and garbage temporary storage box on the cleaning mechanism can be quickly disassembled and installed, thereby improving the convenience of using the device; (4) The height of the connecting rod can be adjusted by the adjusting handle, and cleaning staff of different heights can adjust it by themselves, thereby improving the comfort of using the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a first stereoscopic diagram of the overall structure of the present invention;

[0017] Figure 2 It is a second stereoscopic diagram of the overall structure of the present invention;

[0018] Figure 3 It is a third stereoscopic diagram of the overall structure of the present invention;

[0019] Figure 4 A three-dimensional diagram of the cleaning mechanism of the present invention;

[0020] Figure 5 An exploded view of the cleaning mechanism of the present invention;

[0021] Figure 6 A three-dimensional diagram of the dust collection mechanism of the present invention;

[0022] Figure 7 It is a cross-sectional view of the collecting barrel of the present invention.

[0023] Description of reference numerals:

[0024] 1. Cart body; 11. Bracket; 12. Cover plate; 121. Observation window;

[0025] 2. Dust collection mechanism; 201. Collection bucket; 2011. Dust inlet; 202. Sealing cover; 2021. Air outlet; 203. Mounting frame; 204. Conduit; 205. Dust hopper; 206. Hose; 207. Adjusting bolt; 208. Motor; 2081. Output shaft; 209. Impeller; 210. Protective cover; 211. Dust filter bag;

[0026] 3. Cleaning mechanism; 301. Mounting rod; 302. Scraper; 3021. Block; 303. First mounting plate; 304. Second mounting plate; 305. Guide sleeve; 306. Guide rod; 307. First spring; 308. Temporary garbage storage box; 3081. Connecting part; 3082. Slot; 309. Connector block; 3091. Through slot; 310. Connector rod; 3101. Protrusion;

[0027] 4. Power supply;

[0028] 5. Control switch;

[0029] 6. Adjustment handle; 61. Fixed rod; 62. Telescopic rod; 63. Connecting rod; 64. Adjustment screw. DETAILED DESCRIPTION

[0030] The present invention will be further described below in conjunction with the accompanying drawings:

[0031] like Figure 1 and Figure 2 As shown, the present invention provides a campus garbage cleaning device, including a cart body 1, a dust suction mechanism 2 for collecting ground garbage is arranged near the head of the cart body 1, and a cleaning mechanism 3 for cleaning ground adhesions is arranged near the tail of the cart body 1. The cleaning mechanism 3 cooperates with the dust suction mechanism 2, and when encountering ground adhesions, the cleaning mechanism 3 first scoops up the adhesions, and then the dust suction mechanism 2 sucks and collects the adhesions, so as to clean up the ground adhesions (chewing gum, tape, etc.) in the university campus and keep the road clean and sanitary.

[0032] In an optional embodiment of the present invention, Figure 1 , Figure 2 , Figure 6 and Figure 7As shown, the dust collection mechanism 2 includes a collection bucket 201, which is fixedly mounted on the cart body 1 by screws. A mounting frame 203 is fixedly mounted near the collection bucket 201 at the bottom of the cart body 1 by screws. A guide tube 204 with an adjustable tilt angle is provided on the mounting frame 203. A dust collection hopper 205 is fixedly provided at one end of the guide tube 204 away from the cart body 1, and the dust collection hopper 205 and the guide tube 204 can be fixedly connected by a thread. The dust collection hopper 205 is close to the cleaning mechanism 3, so that the dust collection mechanism 2 can collect the adhesion shoveled from the ground by the cleaning mechanism 3. The length of the dust collection hopper 205 is adapted to the length of the cleaning mechanism 3, so that the dust collection mechanism 2 can collect the adhesion shoveled from the ground by the cleaning mechanism 3. A sealing cover 202 is fixedly provided on the top of the collection bucket 201, and the sealing cover 202 can be detachably fixedly connected to the collection bucket 201 by a snap-fit ​​method, or can be detachably fixedly connected by a thread. The bottom of the sealing cover 202 is fixed with a motor 208 by screws, and the motor 208 is a DC motor. The output shaft 2081 of the motor 208 is fixed with an impeller 209 by screws. The motor 208 is located at the outer cover of the impeller 209 and is provided with a protective cover 210. The protective cover 210 can protect the impeller 209 from being damaged by other components in the collection barrel 201, and can also protect other components in the collection barrel 201 from being damaged by the impeller 209. The sealing cover 202 is provided with an air outlet 2021 corresponding to the position of the motor 208, and the air outlet 2021 is used to discharge the filtered air out of the collection barrel 201. A filter is provided at the position of the air outlet 2021, and the filter can further filter dust, prevent tiny particles from being discharged into the external environment, and keep the air on the university campus clean. A dust inlet 2011 is provided on one side of the collection barrel 201 near the mounting frame 203. The dust inlet 2011 is connected to the duct 204 via a hose 206. The hose 206 is fixedly connected to the dust inlet 2011 via a cable tie. The hose 206 is fixedly connected to the duct 204 via a cable tie. A dust filter bag 211 is provided inside the collection barrel 201. The opening of the dust filter bag 211 is fixedly sleeved at the position of the dust inlet 2011. The dust filter bag 211 is used to collect the inhaled dust, adhesions and other garbage to prevent the garbage from entering the motor 208.

[0033] On the basis of the above implementation mode, further, Figure 2 and Figure 6 As shown, the mounting frame 203 is provided with an adjusting bolt 207, and a fixing clamp is provided on the adjusting bolt 207, and the fixing clamp clamps the guide tube 204. The inclination angle of the dust hopper 205 and the ground can be changed by adjusting the bolt 207 and the nut, so as to facilitate adjustment to correspond to the cleaning mechanism 3. The fixing clamp clamps the guide tube 204, and the distance between the dust hopper 205 and the cleaning mechanism 3 can be adjusted by changing the position of the fixing clamp clamping the side of the guide tube 204.

[0034] In an optional embodiment of the present invention, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the cleaning mechanism 3 includes a mounting rod 301 and a scraper 302. One end of the mounting rod 301 is fixedly mounted on the cart body 1 by screws, and the other end of the mounting rod 301 is inclined toward the head direction of the cart body 1 and a first mounting plate 303 is welded and fixed thereon. The number of mounting rods 301 is preferably two and they are arranged parallel to each other. A second mounting plate 304 is fixedly mounted on the top of the scraper 302 by screws. The scraper 302 can be made of hard plastic material or metal material. A guide sleeve 305 is welded and fixedly mounted on the second mounting plate 304 relative to one side of the first mounting plate 303, and a guide rod 306 is welded and fixedly mounted on the first mounting plate 303 relative to one side of the second mounting plate 304. The guide rod 306 extends into the guide sleeve 305 and the two slide together. A first spring 307 is provided around the guide rod 306 and the guide sleeve 305. One end of the first spring 307 can be fixedly connected to the first mounting plate 303 by a hook and a slot 3082, and the other end of the first spring 307 can be fixedly connected to the second mounting plate 304 by a hook and a slot 3082. The guide sleeve 305, the guide rod 306 and the first spring 307 cooperate, and when the scraper 302 encounters a hard object protrusion on the ground (such as a cement protrusion and a screw, etc.), it can shrink and avoid it to prevent the scraper 302 from being directly damaged.

[0035] On the basis of the above implementation mode, further, Figure 2 , Figure 4 and Figure 5As shown, a temporary garbage storage box 308 is provided on the top of the scraper 302. The temporary garbage storage box 308 can collect garbage that is too heavy to be easily sucked by the dust suction mechanism 2, and clean them together after a period of time to improve the garbage cleaning efficiency. A block 3021 is welded and fixed on the top of the scraper 302, and a slot 3082 is processed at the corresponding position of the temporary garbage storage box 308, wherein the block 3021 can be in a rectangular block shape, and the slot 3082 can be in a T shape. The scraper 302 and the temporary garbage storage box 308 are detachably fixedly connected through the block 3021 and the slot 3082. Since the scraper 302 is a consumable part and needs to be replaced easily, a quick installation and removal method is selected to improve the convenience during use. A connecting portion 3081 is provided at the end of the temporary garbage storage box 308 close to the scraper 302, and the connecting portion 3081 facilitates the introduction of heavy garbage on the scraper 302 into the temporary garbage storage box 308. The connecting portion 3081 can be set in an arc shape. A joint rod 310 is welded and fixedly installed on the top of the garbage temporary storage box 308. A groove is arranged on the side of the joint rod 310 away from the garbage temporary storage box 308. A second spring and a protrusion 3101 are arranged in sequence in the groove. The protrusion 3101 extends out of the groove and can slide along the groove. One end of the second spring is fixedly connected to the bottom of the groove, and the other end of the second spring is fixedly connected to the bottom of the protrusion 3101. A joint block 309 is welded and fixedly installed on the side of the second mounting plate 304 away from the guide sleeve 305. A joint groove is arranged on the joint block 309, and the joint groove matches the joint rod 310. A through groove 3091 is arranged on the side of the joint block 309 corresponding to the position of the protrusion 3101, so that the protrusion 3101 on the joint rod 310 can match the through groove 3091 on the joint block 309, so that the two can be detachably fixedly connected. Since the garbage in the garbage temporary storage box 308 needs to be dumped, the garbage temporary storage box 308 and the second mounting plate 304 adopt a quick detachable connection method to improve the convenience of using the device. The cross-sections of the joint rod 310 and the joint groove may both be regular hexagons, so as to prevent the joint rod 310 from rotating relative to the joint block 309 and improve the stability of the device.

[0036] In an optional embodiment of the present invention, Figure 1 and Figure 3 As shown, a power source 4 is fixedly arranged near the tail of the cart body 1, and the power source 4 can be a lithium-ion battery or a lead-acid battery. A bracket 11 is fixedly installed near the tail of the cart body 1 by screws, and the bracket 11 is located above the power source 4. A control switch 5 is fixedly installed on the top of the bracket 11 by screws, and the control switch 5 is used to control the operation of the motor 208 of the dust collection mechanism 2. The dust collection mechanism 2 is connected to the power source 4 and the control switch 5 by wires. The control switch 5 is arranged at the tail of the cart body 1 and located on the top of the bracket 11 for easy operation by the cleaning staff.

[0037] In an optional embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, a cover plate 12 is fixedly mounted on the cart body 1 near the dust collecting mechanism 2 and the cleaning mechanism 3 by means of a buckle, and the cover plate 12 is convenient for inspection or adjustment of the device. An observation window 121 is provided on the cover plate 12, and transparent glass is provided at the position of the observation window 121. The working conditions of the dust collecting mechanism 2 and the cleaning mechanism 3 can be directly observed through the observation window 121, so that countermeasures can be taken in time.

[0038] In an optional embodiment of the present invention, Figure 1 , Figure 2 and Figure 3 As shown, an adjustment handle 6 is fixedly provided near the rear of the cart body 1. The adjustment handle 6 includes a fixing rod 61, and there are two fixing rods 61 that are distributed in parallel. One end of the two fixing rods 61 is fixedly installed with the cart body 1 by screws. Both fixing rods 61 are inclined toward the head direction away from the cart body 1. A slide groove is provided in each of the two fixing rods 61, and a telescopic rod 62 is slidably provided in each of the two slide grooves. An adjustment screw 64 is provided at the side position of the two fixing rods 61 away from one end of the cart body 1, and the end of the adjustment screw 64 can abut against the side of the telescopic rod 62. A connecting rod 63 is fixedly provided at the side position of the two telescopic rods 62 away from one end of the fixing rod 61. The height of the connecting rod 63 can be adjusted by adjusting the screw 64, and cleaning personnel of different heights can adjust it by themselves to improve the comfort of using the device. The outer periphery of the connecting rod 63 can be coated with a rubber anti-slip layer.

[0039] like Figures 1 to 7 As shown, during operation, the cleaning staff pushes the cart body 1 to the road surface to be cleaned by hand through the connecting rod 63, and then controls the dust suction mechanism 2 to start working through the control switch 5, and then pushes the cart body 1 to travel on the road surface in turn. The dust suction mechanism 2 first absorbs the easy-to-clean garbage into the dust filter bag 211 through the dust suction hopper 205, and those ground adhesions cannot be absorbed temporarily. When the adhesions encounter the cleaning mechanism 3, the scraper 302 scoops up the adhesions. At this time, the dust suction mechanism 2 can absorb the adhesions into the dust filter bag 211 through the dust suction hopper 205 to complete the cleaning of the ground adhesions. When encountering heavy garbage (such as stones), the dust suction mechanism 2 is not easy to absorb, and it can be introduced into the garbage temporary storage box 308 through the scraper 302. After a period of time or after the cleaning work is completed, the garbage in the garbage temporary storage box 308 is dumped in a centralized manner to improve the garbage cleaning efficiency.

[0040] The above are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereby. It should be understood by those skilled in the art that various changes, modifications, substitutions and deformations may be made to these embodiments without departing from the principles and purposes of the present invention, and all of them should be included in the protection scope of the present invention. The protection scope of the present invention is defined by the claims and their equivalents.

Claims

1. A campus garbage cleaning device, comprising a cart body, characterized in that: A dust suction mechanism for collecting ground garbage is arranged near the head of the cart body, and a cleaning mechanism for cleaning ground adhesions is arranged near the tail of the cart body; the cleaning mechanism cooperates with the dust suction mechanism, and when encountering ground adhesions, the cleaning mechanism first scoops up the adhesions, and then the dust suction mechanism sucks and collects the adhesions.

2. A campus garbage cleaning device according to claim 1, characterized in that: The dust suction mechanism includes a collecting bucket, which is fixedly mounted on the trolley body; a mounting frame is fixedly provided at the bottom of the trolley body near the collecting bucket; a duct with an adjustable inclination angle is provided on the mounting frame; a dust suction hopper is fixedly provided at one end of the duct away from the trolley body; the dust suction hopper is close to the cleaning mechanism; a sealing cover is fixedly provided on the top of the collecting bucket; a motor is fixedly provided at the bottom of the sealing cover; an impeller is fixedly provided on the output shaft of the motor; a protective cover is provided on the outer cover of the impeller of the motor; an air outlet is provided on the sealing cover corresponding to the position of the motor; a dust inlet is provided on the side of the collecting bucket close to the mounting frame; the dust inlet is connected to the duct through a hose; a dust filter bag is provided inside the collecting bucket; and an opening of the dust filter bag is fixedly sleeved at the dust inlet position.

3. A campus garbage cleaning device according to claim 2, characterized in that: The mounting frame is provided with an adjusting bolt, the adjusting bolt is provided with a fixing clamp, and the fixing clamp clamps the conduit.

4. A campus garbage cleaning device according to claim 2, characterized in that: The sealing cover is detachably fixedly connected to the collecting bucket by means of a buckle or a thread.

5. A campus garbage cleaning device according to claim 2, characterized in that: The length of the dust hopper is matched with the length of the cleaning mechanism.

6. A campus garbage cleaning device according to claim 1, characterized in that: The cleaning mechanism includes a mounting rod and a scraper, one end of the mounting rod is fixedly mounted on the trolley body, the other end of the mounting rod is inclined toward the head direction of the trolley body and a first mounting plate is fixedly arranged thereon, a second mounting plate is fixedly arranged on the top of the scraper, a guide sleeve is fixedly arranged on the side of the second mounting plate opposite to the first mounting plate, a guide rod is fixedly arranged on the side of the first mounting plate opposite to the second mounting plate, the guide rod extends into the guide sleeve and the two are slidably matched, and a first spring is provided on the outer sleeve of the guide rod and the guide sleeve.

7. A campus garbage cleaning device according to claim 6, characterized in that: A garbage storage box is arranged on the top of the scraper, a card block is fixedly arranged on the top of the scraper, a card slot is arranged at a position corresponding to the garbage storage box, the scraper and the garbage storage box are detachably fixedly connected through the card block and the card slot, a joint rod is fixedly arranged on the top of the garbage storage box, a groove is arranged on the side of the joint rod away from the garbage storage box, a second spring and a protrusion are arranged in sequence in the groove, the protrusion extends out of the groove and can slide along the groove, a joint block is fixedly arranged on the side of the second mounting plate away from the guide sleeve, a joint groove is arranged on the joint block, the joint groove cooperates with the joint rod, and a through groove is arranged on the side of the joint block corresponding to the position of the protrusion.

8. The campus garbage cleaning device according to claim 1 is characterized by: A power source is fixedly provided on the cart body near the tail, a bracket is fixedly provided on the cart body near the tail, and a control switch is fixedly provided on the top of the bracket; the dust collection mechanism is electrically connected to the power source and the control switch.

9. The campus garbage cleaning device according to claim 1, characterized in that: A cover plate is fixedly arranged on the cart body near the dust suction mechanism and the cleaning mechanism, an observation window is arranged on the cover plate, and transparent glass is arranged at the position of the observation window.

10. The campus garbage cleaning device according to claim 1, characterized in that: The trolley body is fixedly provided with an adjustment handle near the rear of the trolley, and the adjustment handle includes a fixing rod. There are two fixing rods that are distributed in parallel, and the two fixing rods are inclined toward the head direction away from the trolley body. Slide grooves are provided in the two fixing rods, and telescopic rods are slidably provided in the two slide grooves. Adjustment screws are provided on the side positions of the two fixing rods away from one end of the trolley body, and connecting rods are fixedly provided on the side positions of the two telescopic rods away from one end of the fixed rods.

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