Automatic limiting, rotating and folding mechanism and generator set trolley
By designing an automatic limit rotation folding mechanism on the trolley, the problem of large space occupied by the handrail is solved and converted into a protective device, achieving the effect of easy handling and cost reduction.
Patent Information
- Application Number
- CN202420409506.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-04
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-03-04
AI Technical Summary
The handrails of existing trolleys are fixed and take up a large space, making them difficult to handle, and lack of protective functions, resulting in complex structure and high cost.
An automatic limit rotation folding mechanism is designed, and the handrail rod can be folded by hingedly setting the rotating frame, and automatic limiting is achieved with the help of the limit lock, forming a foldable handrail, which is both easy to carry and can be used as a protective device.
The folding of the handrail is achieved, which facilitates space utilization, while avoiding the need for additional protective devices, simplifying the structure and reducing costs.
Smart Images
Figure CN222202658U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical structures, in particular to an automatic position-limiting rotation and folding mechanism and a generator set trolley. Background Art
[0002] In actual production, many devices need to be transported by trolleys. However, in order to facilitate pushing, existing trolleys often have high handrails, and the handrails are fixed, which are large in size, occupy a large space, and are not convenient for transportation. In addition, the existing trolley handrails do not have a protective function for the equipment on the trolley, and a special protective device needs to be set separately, resulting in a complex structure and high cost.
[0003] Therefore, those skilled in the art are committed to developing an automatic limit rotation and folding mechanism and a generator set trolley that have both convenient transportation and protective functions. Utility Model Content
[0004] In view of the above-mentioned defects of the prior art, the utility model discloses an automatic limit rotation and folding mechanism and a generator set trolley, and the technical problem to be solved is to provide an automatic limit rotation and folding mechanism and a generator set trolley with both convenient transportation and protective functions.
[0005] To achieve the above-mentioned purpose, the utility model provides an automatic limited rotation and folding mechanism, including a fixed rod, a fixed support frame is installed on the fixed rod, a rotating frame is hinged on the fixed support frame and the fixed rod, a handrail rod is connected to the rotating frame, and the handrail rod can be rotated and folded around a hinge axis; the fixed support frame is also provided with a limit lock that can automatically limit the rotating frame.
[0006] Preferably, the fixed support frame includes a mounting plate and a support plate which are perpendicular to each other, and the mounting plate is fixedly connected to the top of the fixed rod. Since the mounting plate and the support plate are perpendicular to each other and the support plate fits the side of the fixed rod, the fixed support frame is fixed to the fixed rod. The fixed rod, the support plate and the rotating frame are all provided with connecting holes, and the hinge shaft passes through the connecting holes to connect the three, so that the rotating frame can rotate around the hinge shaft.
[0007] Preferably, the support plate is provided with a guide pin, and the rotating frame is provided with an arc groove that slides with the guide pin. The angle of the arc groove is preferably 90°, so that the handrail can be rotated from a vertical state to a horizontal state to complete folding.
[0008] Preferably, the limit lock is installed on the support plate and a limit hole is provided on the rotating frame; when the handrail rod is in an open state, the telescopic pin of the limit lock extends into the limit hole; when the handrail rod needs to be folded, the telescopic pin is pulled out of the limit hole to release the restriction of the limit lock, and the handrail rod can be rotated from a vertical state to a horizontal state to complete the folding.
[0009] Preferably, a curled mounting portion is provided on the rotating frame, the mounting portion is integrally formed, and the handrail is installed in the mounting portion by interference fit.
[0010] Preferably, the limit lock comprises a shell, wherein a first coaxial mounting hole and a second coaxial mounting hole are provided in the shell, wherein the diameter of the first mounting hole is smaller than the diameter of the second mounting hole, and the telescopic pin is slidably installed in the first mounting hole and the second mounting hole; one end of the telescopic pin extends out of the first mounting hole, and the other end of the telescopic pin extends out of the second mounting hole and is connected to a handle, and the handle is used to pull the telescopic pin so that the telescopic pin is pulled out of the limit hole; the telescopic pin sleeve located in the second mounting hole is provided with a spring, and the two ends of the spring abut against the handle and the limit pin installed on the telescopic pin. The telescopic pin is provided with a through hole in a radial direction, and the limit pin is installed in the through hole, and both ends of the limit pin extend out of the through hole. When the handle is not pulled, the limit pin abuts against the transition surface of the first mounting hole and the second mounting hole, and the transition surface also limits the limit pin. Under the action of the spring, the telescopic pin can be automatically ejected and extends out of the first mounting hole, and automatically enters the limit hole to achieve limit. After the handle is pulled, the limit pin is separated from the transition surface between the first mounting hole and the second mounting hole, moves in the second mounting hole, the spring is compressed, and the telescopic pin is retracted into the first mounting hole, and the telescopic pin can be pulled out of the limit hole to release the limit lock. In order to better control the expansion and contraction of the spring, a limit cylinder is further provided between the housing and the handle, and the spring is against the limit cylinder.
[0011] Preferably, a nut is threadedly connected to one end of the shell near the first mounting hole, and the nut is fixedly connected to the support plate. Welding can be used here. A through hole through which the telescopic pin can pass is opened on the support plate. When the through hole corresponds to the limiting hole, the telescopic pin can be automatically popped out and enter the limiting hole to achieve limiting.
[0012] The utility model also provides a generator set trolley, comprising the automatic position limiting rotation and folding mechanism as described above, a bracket is provided on the fixing rod, the generator set is placed on the bracket, and wheels are also provided at the bottom of the fixing rod.
[0013] Preferably, the handrail rod can form a protective rod for the generator set after being rotated and folded around the hinge axis.
[0014] The beneficial effects of the utility model are:
[0015] By hingedly setting the rotating frame, the handrail rod can be rotated and folded around the hinge axis, and the fixed handrail is changed to a foldable state. The handrail is folded during transportation, which can greatly reduce the space occupied by the handrail and make it easier to carry. At the same time, by setting a limit lock, the rotating frame can be automatically limited, so that the handrail can be kept in a stable state when the handrail is pushed. In addition, after the handrail is changed to a foldable state, the handrail can also be directly used as a protective device for the pushed equipment, and there is no need to set up a special protective device separately. The structure is simpler, the use is more convenient, and the cost is greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a structural schematic diagram of the rotary folding mechanism of the utility model in an open state;
[0017] Figure 2 It is an exploded schematic diagram of the rotary folding mechanism of the utility model;
[0018] Figure 3 It is a schematic diagram of a fixed support frame and a rotating frame of the rotating folding mechanism of the utility model;
[0019] Figure 4 It is a structural schematic diagram of the rotary folding mechanism of the utility model in a folded state;
[0020] Figure 5 It is a structural schematic diagram of the limit lock of the rotary folding mechanism of the utility model;
[0021] Figure 6 It is a structural schematic diagram of the utility model trolley in an open state;
[0022] Figure 7 It is a structural schematic diagram of the utility model trolley in a folded state.
[0023] In the above drawings: 1. rotating and folding mechanism; 11. fixing rod; 12. fixed support frame; 121. mounting plate; 122. support plate; 123. guide pin; 13. rotating frame; 131. arc groove; 132. limiting hole; 133. mounting portion; 14. handrail rod; 15. hinge shaft; 16. limiting lock; 161. telescopic pin; 162. housing; 1621. first mounting hole; 1622. second mounting hole; 163. handle; 164. spring; 165. limiting pin; 166. nut; 2. trolley; 21. bracket; 22. generator set; 23. wheel. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as a limitation on the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0025] like Figure 1 As shown, the utility model provides an automatic limit rotation and folding mechanism 1, including a fixed rod 11, a fixed support frame 12 is installed on the fixed rod 11, a rotating frame 13 is hinged on the fixed support frame 12 and the fixed rod 11, and a handrail rod 14 is connected to the rotating frame 13, and the handrail rod 14 can be rotated and folded around a hinge axis 15; the fixed support frame 12 is also provided with a limit lock 16 that can automatically limit the rotating frame 13.
[0026] In the above embodiment, the rotating frame 13 is hingedly provided so that the handrail rod 14 can be rotated and folded around the hinge shaft 15, and the fixed handrail is changed into a foldable state. When the handrail is folded during transportation, the space occupied by the handrail can be greatly reduced, making transportation more convenient. At the same time, by providing a limit lock 16, the rotating frame 13 can be automatically limited, so that the handrail can be kept in a stable state when the handrail is pushed. In addition, after the handrail is changed into a foldable state, the handrail can also be directly used as a protective device for the pushed device, and there is no need to provide a special protective device separately. The structure is simpler, the use is more convenient, and the cost is greatly reduced.
[0027] like Figure 2 and Figure 3 As shown, the fixed support frame 12 includes a mounting plate 121 and a support plate 122 which are perpendicular to each other. The mounting plate 121 is fixedly connected to the top of the fixed rod 11. Since the mounting plate 121 and the support plate 122 are perpendicular to each other, and the support plate 122 fits the side of the fixed rod 11, the fixed support frame 12 is fixed to the fixed rod 11. The fixed rod 11, the support plate 122 and the rotating frame 13 are all provided with connecting holes, and the three are then connected by passing the hinge shaft 15 through the connecting holes, so that the rotating frame 13 can rotate around the hinge shaft 15. At the same time, a guide pin 123 is provided on the support plate 122, and an arc groove 131 which slidably cooperates with the guide pin 123 is opened on the rotating frame 13. The angle of the arc groove 131 is preferably 90°, so that Figure 4As shown, the handrail 14 can be rotated from a vertical state to a horizontal state to complete the folding. At the same time, a limit lock 16 is installed on the support plate 122, and a limit hole 132 is provided on the rotating frame 13; when the handrail 14 is in an open state, the telescopic pin 161 of the limit lock 16 extends into the limit hole 132; when the handrail 14 needs to be folded, the telescopic pin 161 is pulled out of the limit hole 132, the restriction of the limit lock 16 is released, and the handrail 14 can be rotated, and the handrail 14 is rotated from a vertical state to a horizontal state to complete the folding. Furthermore, a curled mounting portion 133 is provided on the rotating frame 13, and the mounting portion 133 is integrally formed, and the handrail 14 is installed in the mounting portion 133 by interference fit.
[0028] like Figure 5 As shown, the limit lock 16 includes a housing 162, in which a first mounting hole 1621 and a second mounting hole 1622 are coaxially arranged, the diameter of the first mounting hole 1621 is smaller than the diameter of the second mounting hole 1622, and a telescopic pin 161 is slidably installed in the first mounting hole 1621 and the second mounting hole 1622; one end of the telescopic pin 161 extends out of the first mounting hole 1621, and the other end of the telescopic pin 161 extends out of the second mounting hole 1622 and is connected to a handle 163, and the handle 163 is used to pull the telescopic pin 161 so that the telescopic pin 161 is pulled out of the limit hole 132; the telescopic pin 161 located in the second mounting hole 1622 is sleeved with a spring 164, and the two ends of the spring 164 are against the handle 163 and the limit pin 165 installed on the telescopic pin 161. A through hole along the radial direction is opened on the telescopic pin 161, and the limit pin 165 is installed in the through hole, and both ends of the limit pin 165 extend out of the through hole. When the handle 163 is not pulled, the limit pin 165 abuts against the transition surface of the first mounting hole 1621 and the second mounting hole 1622, and the transition surface also limits the limit pin 165. Under the action of the spring 164, the telescopic pin 161 can be automatically ejected and extended out of the first mounting hole 1621, and automatically enter the limit hole 132 to achieve the limit. After the handle 163 is pulled, the limit pin 165 is separated from the transition surface of the first mounting hole 1621 and the second mounting hole 1622, and moves in the second mounting hole 1622. The spring 164 is compressed, and the telescopic pin 161 is retracted into the first mounting hole 1621. The telescopic pin 161 can be pulled out of the limit hole 132 to unlock the limit lock 16. In order to better control the expansion and contraction of the spring 164, a limit cylinder is also provided between the housing 162 and the handle 163, and the spring 164 abuts against the limit cylinder. In addition, a nut 166 is threadedly connected to one end of the shell 162 near the first mounting hole 1621, and the nut 166 is fixedly connected to the support plate 122. Welding can be used here. A through hole through which the telescopic pin 161 can pass is opened on the support plate 122. When the through hole corresponds to the limiting hole 132, the telescopic pin 161 can be automatically popped out and enter the limiting hole 132 to achieve limiting.
[0029] like Figure 6 and Figure 7 As shown, the utility model also provides a generator set trolley 2, including the above automatic limit rotation and folding mechanism 1, a bracket 21 is provided on the fixed rod 11, a generator set 22 is placed on the bracket 21, and a wheel 23 is also provided at the bottom of the fixed rod 11. The handrail rod 14 can be rotated and folded around the hinge shaft 15 to form a protective rod for the generator set 22.
[0030] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.
Claims
1. An automatic limit rotation folding mechanism, characterized in that: The invention comprises a fixed rod (11), a fixed support frame (12) is installed on the fixed rod (11), a rotating frame (13) is hingedly connected to the fixed support frame (12) and the fixed rod (11), a handrail rod (14) is connected to the rotating frame (13), and the handrail rod (14) can be rotated and folded around a hinge axis (15); the fixed support frame (12) is also provided with a limit lock (16) which can automatically limit the rotating frame (13).
2. The automatic position-limiting rotation and folding mechanism according to claim 1, characterized in that: The fixed support frame (12) comprises a mounting plate (121) and a supporting plate (122) which are perpendicular to each other; the mounting plate (121) is fixedly connected to the top of the fixed rod (11); and the fixed rod (11), the supporting plate (122) and the rotating frame (13) are connected via the hinge shaft (15).
3. The automatic position-limiting rotation and folding mechanism according to claim 2, characterized in that: The support plate (122) is provided with a guide pin (123), and the rotating frame (13) is provided with an arc groove (131) that is slidably matched with the guide pin (123).
4. The automatic position-limiting rotation and folding mechanism according to claim 2, characterized in that: The limit lock (16) is installed on the support plate (122), and a limit hole (132) is provided on the rotating frame (13); when the handrail rod (14) is in an open state, the telescopic pin (161) of the limit lock (16) extends into the limit hole (132).
5. The automatic position-limiting rotation and folding mechanism according to claim 2, characterized in that: The rotating frame (13) is provided with a curled mounting portion (133), and the handrail (14) is mounted in the mounting portion (133).
6. The automatic position-limiting rotation and folding mechanism according to claim 4, characterized in that: The limit lock (16) comprises a shell (162), wherein a first mounting hole (1621) and a second mounting hole (1622) are coaxially arranged in the shell (162), wherein the diameter of the first mounting hole (1621) is smaller than the diameter of the second mounting hole (1622), and the telescopic pin (161) is slidably installed in the first mounting hole (1621) and the second mounting hole (1622); one end of the telescopic pin (161) extends out of the first mounting hole (1621), and the other end of the telescopic pin (161) extends out of the second mounting hole (1622) and is connected to a handle (163); the telescopic pin (161) located in the second mounting hole (1622) is sleeved with a spring (164), and the two ends of the spring (164) are against the handle (163) and a limit pin (165) installed on the telescopic pin (161).
7. The automatic position-limiting rotation and folding mechanism according to claim 6, characterized in that: A nut (166) is threadedly connected to one end of the housing (162) close to the first mounting hole (1621); the nut (166) is fixedly connected to the support plate (122); and a through hole through which the telescopic pin (161) can pass is provided on the support plate (122).
8. A generator trolley, comprising the automatic position-limiting rotation and folding mechanism (1) according to any one of claims 1 to 7, characterized in that: A bracket (21) is provided on the fixing rod (11), a generator set (22) is placed on the bracket (21), and a wheel (23) is also provided at the bottom of the fixing rod (11).
9. The generator trolley according to claim 8, characterized in that: The handrail bar (14) can form a protective bar for the generator set (22) after being rotated and folded around the hinge shaft (15).