Heavy load mobile trolley

Abstract

The present application relates to a kind of heavy load moving trolley, including: rail, car body, walking wheel and walking drive mechanism, walking drive mechanism includes rack rail, driving gear, drive motor and clutch mechanism, further including brake mechanism, brake mechanism includes two groups of brake components separately arranged in the left and right sides of car body and connecting rod connected between two groups of brake components, two groups of brake components are respectively arranged on two rails, connecting rod is connected with clutch mechanism.The present application can make driving gear freely rotate when stopping by clutch mechanism between driving gear and drive motor, prevent driving gear and rack rail from impacting and damaging;By connecting connecting rod between clutch mechanism and two groups of brake components, make the clutch action of clutch mechanism and the braking action of brake component combine through mechanical structure, realize the linkage of two actions, smoothly complete the walking and stopping action of trolley, improve the service life of walking drive mechanism.

Description

Technical Field

[0001] This invention relates to the field of logistics transportation equipment technology, and in particular to a heavy-duty mobile trolley. Background Technology

[0002] Currently, the vast majority of traditional logistics and warehousing in China still rely on manual sorting, labeling, warehouse location planning, handling, and picking. This consumes a significant amount of labor, keeping logistics costs high and greatly weakening the competitiveness of the entire industry. AGV is an abbreviation for Automated Guided Vehicle. It refers to a transport vehicle equipped with electromagnetic or optical automatic guidance devices, capable of traveling along a prescribed guide path, and possessing safety protection and various transfer functions.

[0003] Existing transport vehicles, such as the Chinese utility model patent with publication number CN202575726U, disclose an adaptive heavy-duty traveling mechanism based on rack and pinion drive, including a traveling trolley, a suspension system, a composite track, and a lateral limit seat. The composite track consists of a rack and pinion track and a steel plate track. The traveling trolley wheel set and the steel plate track constitute the traveling trolley wheel system. Driven by the rack and pinion, the wheels of the traveling trolley closely follow the steel plate track to travel adaptively and smoothly. However, when transporting heavy goods, the large inertia of the trolley can easily cause damage to the rack and pinion when stopping. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a heavy-duty mobile trolley that easily damages gears and racks when the trolley is stopped.

[0005] The above-mentioned objective of the present invention is achieved through the following technical solution: a heavy-duty mobile trolley, comprising: a rail, a vehicle body disposed above the rail, traveling wheels disposed below the vehicle body, and a traveling drive mechanism disposed below the vehicle body. The traveling drive mechanism includes a rack and pinion track fixed to one side of the rail, a drive gear rotating on the vehicle body and meshing with the rack and pinion track, a drive motor for driving the drive gear to rotate, and a clutch mechanism connected between the drive gear and the drive motor. It also includes a braking mechanism, which includes two sets of braking components disposed on the left and right sides of the vehicle body and a connecting rod connected between the two sets of braking components. The two sets of braking components are respectively disposed on the two rails, and the connecting rod is connected to the clutch mechanism.

[0006] Preferably, the braking assembly includes a brake seat disposed above the rail, the brake seat being fixed below the vehicle body, and a pair of counter-swinging clamping arms disposed inside the brake seat, the clamping arms being disposed on the left and right sides corresponding to the rail, the lower end of the clamping arms being provided with a brake block, and the upper end of the clamping arms being connected to the connecting rod.

[0007] Preferably, the brake seat is provided with a pair of meshing transmission gears, and the two clamping arms are respectively fixed on the corresponding transmission gears.

[0008] Preferably, the linkage is connected to two clamping arms on the same side of the rail of the two sets of braking assemblies, so that the two sets of braking assemblies can complete the braking action.

[0009] Preferably, a guide seat is provided at the bottom of the vehicle body, the linkage rod passes through the guide seat, and an elongated groove is provided at the upper end of the clamping arm, with the linkage rod movably connected in the elongated groove.

[0010] Preferably, a slider is provided in the long groove, the connecting rod is hinged to the slider, and a first return spring is provided in the long groove, with the first return spring located at both ends of the slider.

[0011] Preferably, the linkage is a telescopic structure, comprising an adjusting rod and connecting rods disposed at both ends of the adjusting rod, wherein the adjusting rod has a through threaded hole, and the connecting rods are screwed into the threaded hole.

[0012] Preferably, a second return spring is connected between the brake seat and the clamping arm, and the second return spring drives the clamping arm to swing away from the rail.

[0013] Preferably, the clutch mechanism includes a housing fixed to the vehicle body, a rotating shaft rotatably mounted on one end of the housing, a driven disc connected to the rotating shaft, a bushing rotatably mounted on the other end of the housing, a pressure plate fitted on the bushing, a friction plate disposed on the opposite side of the driven disc and the pressure plate, a movable frame movably disposed on the outside of the pressure plate, and a cylinder for driving the movable frame to move axially, wherein the movable frame is fixedly connected to the connecting rod.

[0014] Preferably, a connecting seat is provided on the outer side of the housing, the connecting seat is slidably mounted on the housing and fixedly connected to the movable frame, the connecting seat is provided with two connecting arms, the connecting arms are provided with clamping grooves, the linkage rod is disposed in the clamping grooves, and a connecting bolt is connected between the ends of the two connecting arms.

[0015] The beneficial effects of this invention are:

[0016] This invention, through a clutch mechanism between the drive gear and the drive motor, allows the drive gear to rotate freely when the vehicle is stopped, preventing the drive gear from being damaged by impact with the rack and pinion track.

[0017] By connecting the clutch mechanism with two sets of braking components via linkage rods, the clutch action of the clutch mechanism and the braking action of the braking components are combined through a mechanical structure, so as to achieve the linkage of the two actions to smoothly complete the trolley's walking and stopping actions, thereby improving the service life of the walking drive mechanism. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention;

[0019] Figure 2 This is a structural schematic diagram from another perspective of an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the braking mechanism in an embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the clutch mechanism in an embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of the clamping arm structure in an embodiment of the present invention;

[0023] In the diagram: 1-Rail, 2-Car body, 3-Walking wheel, 4-Walking drive mechanism, 401-Rack and pinion track, 402-Drive gear, 403-Drive motor, 404-Clutch mechanism, 4041-Carcass, 4042-Shaft, 4043-Driven disc, 4044-Busset, 4045-Pressure plate, 4046-Friction plate, 4047-Moving frame, 4048-Cylinder, 4049-Third return spring, 40410- Connecting seat, 40411-connecting arm, 40412-clamping groove, 40413-connecting bolt, 5-brake mechanism, 501-brake assembly, 5011-brake seat, 5012-transmission gear, 5013-clamping arm, 5014-brake block, 5015-slider, 5016-first return spring, 5017-second return spring, 502-connecting rod, 5021-connecting rod, 5022-adjusting rod, 6-guide seat. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] This specific embodiment is merely an explanation of the present invention and is not intended to limit the invention. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they are within the scope of the claims of the present invention.

[0026] Example: Figure 1 and Figure 2As shown, a heavy-duty mobile trolley includes: a steel rail 1, a vehicle body 2 disposed above the steel rail 1, traveling wheels 3 disposed below the vehicle body 2, and a traveling drive mechanism 4 disposed below the vehicle body 2.

[0027] The walking drive mechanism 4 includes a rack and pinion track 401 fixed to one side of the rail 1, a drive gear 402 rotating on the vehicle body 2 and meshing with the rack and pinion track 401, a drive motor 403 for driving the drive gear 402 to rotate, and a clutch mechanism 404 connected between the drive gear 402 and the drive motor 403.

[0028] A braking mechanism 5 is provided under the vehicle body 2. The braking mechanism 5 includes two sets of braking components 501 located on the left and right sides of the vehicle body 2 and a connecting rod 502 connecting the two sets of braking components 501. The two sets of braking components 501 are respectively located on two steel rails 1. The connecting rod 502 is connected to the clutch mechanism 404.

[0029] like Figure 3 As shown, the braking assembly 501 includes a brake seat 5011 disposed above the rail 1. The brake seat 5011 is fixed to the lower part of the vehicle body 2. A pair of counter-swinging clamping arms 5013 are disposed inside the brake seat 5011. The clamping arms 5013 are disposed on the left and right sides of the corresponding rail 1. A brake block 5014 is disposed at the lower end of the clamping arms 5013. The upper end of the clamping arms 5013 is connected to the connecting rod 502.

[0030] A pair of meshing transmission gears 5012 are provided inside the brake seat 5011, and the transmission gears 5012 are rotatably mounted inside the brake seat 5011. Two clamping arms 5013 are respectively fixed on the corresponding transmission gears 5012. When one of the clamping arms 5013 is subjected to the force of the connecting rod 502, the two clamping arms 5013 swing synchronously in opposite directions under the action of the pair of transmission gears 5012, thereby clamping or releasing the rail 1.

[0031] The linkage 502 connects to two clamping arms 5013 located on the same side of the rail 1 of the two sets of braking assemblies 501, enabling the two sets of braking assemblies 501 to complete the braking action. In this embodiment, as... Figure 3 As shown, the upper end of the clamping arm 5013 located on the right side of the rail is connected to the connecting rod 502. When the connecting rod 502 moves to the left, the clamping arm 5013 on the right side swings counterclockwise, thereby releasing the rail 1; when the connecting rod 502 moves to the right, the clamping arm 5013 on the right side swings clockwise, thereby clamping the rail 1.

[0032] A guide seat 6 is provided at the bottom of the vehicle body 2, and the linkage rod 502 passes through the guide seat 6.

[0033] The upper end of the clamping arm 5013 is provided with an elongated groove, and the connecting rod 502 is movably connected within the elongated groove. A slider 5015 is disposed within the elongated groove, and the connecting rod 502 is hinged to the slider 5015. A first return spring 5016 is disposed within the elongated groove, located at both ends of the slider 5015. When the connecting rod 502 moves left or right, it causes the slider 5015 to slide within the elongated groove. The elastic force of the first return spring 5016 is located in the sliding direction of the slider 5015, preventing the slider 5015 from jamming.

[0034] The linkage 502 is a telescopic structure, comprising an adjusting rod 5022 and connecting rods 5021 at both ends of the adjusting rod 5022. The adjusting rod 5022 has a through threaded hole, and the connecting rods 5021 are screwed into the threaded hole. During braking, the brake block 5014 wears due to friction with the rail 1, causing a change in the distance between the brake block 5014 and the side of the rail 1. Therefore, adjusting the length of the linkage 502 adjusts the brake block 5014 to achieve better braking.

[0035] A second return spring 5017 is connected between the brake seat 5011 and the clamping arm 5013. The second return spring 5017 drives the clamping arm 5013 to swing away from the rail 1. In this embodiment, one end of the second return spring 5017 is connected to the upper end of the right clamping arm 5013, and the other end is connected to the inner wall of the brake seat 5011. During the contact braking process, the second return spring 5017 pulls the right clamping arm 5013 counterclockwise to ensure that the brake block 5014 is smoothly released from the rail 1.

[0036] like Figure 4 As shown, the clutch mechanism 404 includes a housing 4041 fixed to the vehicle body 2, a rotating shaft 4042 rotatably mounted on the left side of the housing 4041, a driven plate 4043 connected to the rotating shaft 4042, a bushing 4044 rotatably mounted on the right side of the housing 4041, a pressure plate 4045 fitted on the bushing 4044, a friction plate 4046 disposed on the opposite side of the driven plate 4043 and the pressure plate 4045, a movable frame 4047 movably disposed on the outside of the pressure plate 4045, and a cylinder 4048 for driving the movable frame 4047 to move axially.

[0037] The driving gear 402 and the driven disc 4043 are fixedly mounted at both ends of the rotating shaft 4042. One end of the bushing 4044 is fitted onto the rotating shaft 4042 and rotates relative to the rotating shaft 4042, while the other end is connected to the output shaft of the drive motor 403 via a flat key. The pressure plate 4045 is fitted onto the bushing 4044 and connected to the bushing 4044 via a spline, so that the pressure plate 4045 rotates synchronously with the bushing 4044 and can move axially relative to the bushing 4044.

[0038] A movable frame 4047 is movably mounted inside the housing 4041. A flat bearing is mounted on the side of the movable frame 4047 facing the pressure plate 4045, allowing the pressure plate 4045 to rotate relative to the movable frame 4047. A cylinder 4048 is mounted on the outside of the housing 4041 and extends into the housing, connecting to the movable frame 4047. A third return spring 4049 connects the pressure plate 4045 to the inner wall of the housing 4041.

[0039] like Figure 4 and Figure 5 As shown, one end of the movable frame 4047 extends to the outside of the housing 4041 and is fixedly connected to the connecting rod 502. A connecting seat 40410 is provided on the outside of the housing 4041. The connecting seat 40410 is slidably mounted on the housing 4041 and fixedly connected to the movable frame 4047. Two connecting arms 40411 are provided on the connecting seat 40410. A clamping groove 40412 is provided on the connecting arm 40411. The connecting rod 502 is located in the clamping groove 40412. A connecting bolt 40413 is connected between the ends of the two connecting arms 40411. After the connecting rod 502 is inserted into the clamping groove 40412, tighten the connecting bolt 40413 so that the two connecting arms 40411 tightly clamp the connecting rod 502, preventing the connecting rod 502 from moving relative to the connecting arm 40411. This allows the connecting rod 502 to move left or right with the connecting seat 40410, which facilitates the installation of the connecting rod 502 and the adjustment of the position of the brake block 5014.

[0040] When the vehicle needs to move, cylinder 4048 drives the moving frame 4047 to move to the left, causing the pressure plate 4045 to move to the left and engage with the driven plate 4043. At this time, the output shaft of the drive motor 403 drives the drive gear 402 to rotate through the clutch mechanism. The moving frame 4047 then drives the connecting rod 502 to move to the left through the connecting seat 40410, causing the clamping arm 5013 on the right side of the rail 1 to rotate counterclockwise and the clamping arm 5013 on the left side to rotate clockwise. The brake block 5014 separates from the rail 1, thereby driving the vehicle body 2 to move along the rail 1. When the vehicle needs to stop, cylinder 4048 drives... When the moving frame 4047 moves to the right, the pressure plate 4045 moves to the right and resets under the elastic force of the third reset spring 4049, causing the pressure plate 4045 to separate from the driven plate 4043. At this time, the driving gear 402 can rotate freely, preventing the driving gear 402 from impacting and being damaged by the rack and pinion track 401. At the same time, the moving frame 4047 drives the connecting rod 502 to move to the right through the connecting seat 40410, causing the clamping arm 5013 on the right side of the rail 1 to rotate clockwise and the clamping arm 5013 on the left side to rotate counterclockwise. The brake block 5014 brakes the rail 1, completing the stopping action.

Claims

1. A heavy-duty mobile trolley, comprising: The vehicle body (2) is located above the rail (1), the walking wheel (3) is located below the vehicle body (2), and the walking drive mechanism (4) is located below the vehicle body (2). The walking drive mechanism (4) includes a rack rail (401) fixed on one side of the rail (1), a drive gear (402) rotating on the vehicle body (2) and meshing with the rack rail (401), a drive motor (403) for driving the drive gear (402) to rotate, and a clutch mechanism (404) connected between the drive gear (402) and the drive motor (403). The vehicle body (2) is characterized by further including a brake mechanism (5). The brake mechanism (5) includes two sets of brake components (501) respectively located on the left and right sides of the vehicle body (2) and a connecting rod (502) connected between the two sets of brake components (501). The two sets of brake components (501) are respectively located on the two rails (1). The connecting rod (502) is connected to the clutch mechanism (404). The braking assembly (501) includes a brake seat (5011) disposed above the rail (1), the brake seat (5011) being fixed below the vehicle body (2), and a pair of counter-swinging clamping arms (5013) disposed inside the brake seat (5011), the clamping arms (5013) being disposed on the left and right sides corresponding to the rail (1), the lower end of the clamping arms (5013) being provided with a brake block (5014), and the upper end of the clamping arms (5013) being connected to the connecting rod (502); The clutch mechanism (404) includes a housing (4041) fixed on the vehicle body (2), a rotating shaft (4042) rotatably mounted on one end of the housing (4041), a driven disc (4043) connected to the rotating shaft (4042), a bushing (4044) rotatably mounted on the other end of the housing (4041), a pressure plate (4045) fitted on the bushing (4044), a friction plate (4046) disposed on the opposite side of the driven disc (4043) and the pressure plate (4045), a movable frame (4047) movably disposed on the outside of the pressure plate (4045), and a cylinder (4048) for driving the movable frame (4047) to move axially. The movable frame (4047) is fixedly connected to the connecting rod (502).

2. The heavy-duty mobile trolley according to claim 1, characterized in that: The brake seat (5011) is provided with a pair of meshing transmission gears (5012), and the two clamping arms (5013) are respectively fixed on the corresponding transmission gears (5012).

3. The heavy-duty mobile trolley according to claim 2, characterized in that: The linkage (502) is connected to the two clamping arms (5013) of the two sets of braking assemblies (501) located on the same side of the rail (1), so that the two sets of braking assemblies (501) can complete the braking action.

4. A heavy-duty mobile trolley according to claim 3, characterized in that: The bottom of the vehicle body (2) is provided with a guide seat (6), the linkage rod (502) passes through the guide seat (6), the upper end of the clamping arm (5013) is provided with a long groove, and the linkage rod (502) is movably connected in the long groove.

5. A heavy-duty mobile trolley according to claim 4, characterized in that: A slider (5015) is provided in the long groove, and the connecting rod (502) is hinged to the slider (5015). A first return spring (5016) is provided in the long groove, and the first return spring (5016) is located at both ends of the slider (5015).

6. A heavy-duty mobile trolley according to claim 1, characterized in that: The linkage (502) is a telescopic structure. The linkage (502) includes an adjusting rod (5022) and connecting rods (5021) disposed at both ends of the adjusting rod (5022). The adjusting rod (5022) is provided with a through threaded hole, and the connecting rod (5021) is screwed into the threaded hole.

7. A heavy-duty mobile trolley according to claim 1, characterized in that: A second return spring (5017) is connected between the brake seat (5011) and the clamping arm (5013), and the second return spring (5017) drives the clamping arm (5013) to swing away from the rail (1).

8. A heavy-duty mobile trolley according to claim 1, characterized in that: A connecting seat (40410) is provided on the outer side of the outer shell (4041). The connecting seat (40410) is slidably mounted on the outer shell (4041) and fixedly connected to the movable frame (4047). Two connecting arms (40411) are provided on the connecting seat (40410). A clamping groove (40412) is provided on the connecting arm (40411). The linkage rod (502) is located in the clamping groove (40412). A connecting bolt (40413) is connected between the ends of the two connecting arms (40411).

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