Lifting tool
By designing a lifting tool including a chain, operating handle and connecting arm, the lever principle and the coordination of elastic parts, the problem of high cost and large space in the lifting tool in the mechanical device is solved, and the lifting effect is achieved that saves operation, takes up space and is low in cost.
Patent Information
- Application Number
- CN202422145116.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-09-02
AI Technical Summary
In mechanical devices, there is a problem that lifting machinery or manual hoist lifting tools that require lifting but have high cost and take up a large space, which is difficult to effectively use in a small space.
A lifting tool including a chain, an operating handle and two connecting arms is designed to lift the weight through the suspension structure, and the lever principle and the coordination of elastic parts are used to achieve efficient lifting and movement of the weight.
It realizes the lifting effect of saving effort, small space and low cost, and is suitable for mechanical devices with small spaces.
Smart Images
Figure CN222989521U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of mechanical devices, and particularly relates to a lifting tool. Background Art
[0002] There are many heavy objects with large mass in machine tools or engines, which are difficult to move by hand during installation and disassembly. If a lifting machine is purchased, the cost is high and the occupied space is large. If a manual hoist is used for lifting, although the cost is reduced, the space required by the manual hoist is large and it is difficult to use in some small spaces. There is a lack of a labor-saving, small-space-occupying and low-cost lifting tool in workshop production. Summary of the Utility Model
[0003] To solve at least one of the above technical problems, this application provides a lifting tool, and the technical solutions adopted are as follows.
[0004] The lifting tool provided by this application includes a chain, an operating handle, and two connecting arms. The chain includes a plurality of ring structures; the first end of the operating handle hoists a heavy object through a suspension structure; both of the two connecting arms are hinged to the first end of the operating handle, the upper ends of the two connecting arms both hook the ring structures, and the two connecting arms are spaced apart along the length direction of the operating handle; one of the connecting arms hooks the Nth ring structure, and the other connecting arm hooks the Mth ring structure, and M - N ≥ 2.
[0005] In some embodiments of this application, the chain is located between the two connecting arms, the two connecting arms have a tendency to swing towards each other, and the upper ends of the two connecting arms can approach the ring structure to be hooked.
[0006] In some embodiments of this application, the lifting tool includes an elastic member, and both ends of the elastic member are respectively connected to the two connecting arms, and both ends of the elastic member respectively apply a pulling force to the two connecting arms.
[0007] In some embodiments of this application, the elastic member is arranged as a spring.
[0008] In some embodiments of this application, a torsion spring is sleeved on the hinge shaft of the connecting arm and the operating handle.
[0009] In some embodiments of this application, the upper end of the connecting arm is provided with a hook, and a positioning groove is formed on the surface of the hook, and the positioning groove is formed along the extending direction of the hook.
[0010] In some embodiments of this application, the lifting tool includes a direction switching component, and the direction switching component drives the two connecting arms to rotate to adjust the lifting tool to move the heavy object upward or downward.
[0011] In some embodiments of the present application, the direction switching assembly includes a switching handle, a connecting rod, and a hinge member. The switching handle is hinged to the operating handle. One end of the connecting rod is hinged to the switching handle, and the other end of the connecting rod is hinged to the hinge member. The hinge member is respectively hinged to the two connecting arms and the operating handle. The user toggles the switching handle along the length direction of the operating handle, and the switching handle drives the two connecting arms to rotate synchronously on the operating handle through the connecting rod.
[0012] In some embodiments of the present application, the direction switching assembly includes a switching handle and a connecting rod. The switching handle is hinged to the operating handle. Two connecting rods are provided. One ends of the two connecting rods are both hinged to the switching handle. One end of one of the connecting rods is hinged to one of the connecting arms, and the other end of the other connecting rod is hinged to the other connecting arm.
[0013] In some embodiments of the present application, the connection position between the suspension structure and the operating handle is between the hinge positions of the two connecting arms and the operating handle.
[0014] The embodiments of the present application have at least the following beneficial effects: The operating handle of the lifting tool hooks the chain at the first end and suspends the heavy object at the first end with the suspension structure. The user applies force to the second end of the operating handle using the lever principle, causing the second end of the operating handle to swing up and down, and further causing the two connecting arms to alternately rise on the chain and alternately hook the corresponding ring structures, thereby realizing the upward movement of the heavy object. The lifting tool is labor-saving in operation and can be used in a small space. The present application can be widely applied to the technical field of mechanical devices. Description of the Drawings
[0015] The aspects and advantages described and / or appended in the embodiments of the present application will become obvious and easy to understand in conjunction with the following drawings. It should be noted that the embodiments shown in the following drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.
[0016] Figure 1 It is a structural diagram of a lifting tool.
[0017] Figure 2 It is Figure 1 A partial view of area A in
[0018] Figure 3 It is a schematic diagram of the positioning groove on the surface of the hook.
[0019] Reference numerals: 100, chain; 110, ring structure; 120, suspension structure; 200, operating handle; 210, connecting arm; 211, hook; 212, positioning groove; 220, elastic member; 310, switching handle; 320, connecting rod; 330, hinge member. Detailed implementation manners
[0020] The following will combine the attached Figure 1 to the attached Figure 3 Describe the embodiments of the present application in detail, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the attached drawings are exemplary and are only used to explain the present application and should not be construed as a limitation to the present application.
[0021] In the description of the present application, it should be understood that if terms such as "center", "middle part", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the attached drawings. This is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it should not be construed as a limitation to the present application.
[0022] In the description of the present application, the meaning of "several" is more than one, the meaning of "multiple" is more than two, and understandings such as "greater than", "less than", "exceeding", etc. do not include the present number, and understandings such as "above", "below", "within", etc. include the present number. If there is a description of "first" and "second", it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.
[0023] In the description of the present application, unless otherwise clearly specified and limited, the terms "set", "install", "connect", "link" should be understood in a broad sense. For example: it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.
[0024] In the description of the present application, when descriptions such as the reference terms "as an implementation manner", "an embodiment", "some examples", "some embodiments", "schematic embodiments", "examples", "specific examples", "some examples", etc. appear, it means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0025] The present application relates to a lifting tool, which includes a chain 100. The upper end of the chain 100 is fixed to the ceiling or the frame for installing the lifting tool. The chain 100 includes a plurality of ring structures 110, and the ring structures 110 are connected in series in sequence. The lifting tool includes an operating handle 200 and two connecting arms 210. The operating handle 200 is a long rod-shaped structure. The first end of the operating handle 200 lifts a heavy object through a suspension structure 120. The two connecting arms 210 are both hinged to the first end of the operating handle 200. The two connecting arms 210 are spaced apart along the length direction of the operating handle 200. Hooks 211 are provided at the upper ends of the connecting arms 210, and the upper ends of the two connecting arms 210 both hook the ring structures 110.
[0026] The second end of the operating handle 200 is the holding handle for the user. The user applies force to the second end of the operating handle 200 to swing the operating handle 200 up and down. The hooks 211 of the two connecting arms 210 alternately hook different ring structures 110 on the chain 100, so that the operating handle 200 moves up or down at the chain 100, realizing the lifting and suspension of the heavy object.
[0027] When the operating handle 200 moves the heavy object upward through the suspension structure 120, the user swings the second end of the operating handle 200 up and down repeatedly. One of the connecting arms 210 hooks the ring structure 110, and the other connecting arm 210 disengages from the ring structure 110 and moves upward to hook the ring structure 110 one level higher. The two connecting arms 210 alternately complete this action, thereby realizing the upward movement of the heavy object. Correspondingly, when the heavy object moves downward, the user swings the second end of the operating handle 200 up and down repeatedly. One of the connecting arms 210 hooks the ring structure 110, and the other connecting arm 210 disengages from the ring structure 110 and moves downward to hook the ring structure 110 one level lower. The two connecting arms 210 alternately complete this action, thereby realizing the downward movement of the heavy object.
[0028] Further, one connecting arm 210 hooks the Nth loop structure 110, and the other connecting arm 210 hooks the Mth loop structure 110, where M - N ≥ 2, and both N and M are positive integers. The loop structures 110 hooked by the two connecting arms 210 on the chain 100 are separated by at least one loop structure 110, so that the two connecting arms 210 can avoid hooking the same loop structure 110 when alternately hooking the loop structures 110, ensuring the smooth movement of the alternating actions of the two connecting arms 210 and avoiding interfering with each other. It can be understood that the lifting tool designs the interval between the installation positions of the two connecting arms 210 on the operating handle 200, and then designs the number of loop structures 110 separated by the loop structures 110 hooked by the two connecting arms 210.
[0029] It should be noted that the two connecting arms 210 are distinguished as the distal connecting arm 210 and the proximal connecting arm 210 according to the distance from the second end of the operating handle 200. The loop structures 110 on the chain 100 are sorted from bottom to top as the 1st, 2nd, 3rd, and so on.
[0030] When the lifting tool moves the heavy object upward, before the user operates the lifting tool, the second end of the operating handle 200 is inclined downward, the second end of the operating handle 200 is lower than the first end, the hook 211 of the distal connecting arm 210 is higher than the hook 211 of the proximal connecting arm 210, the loop structure 110 hooked by the distal connecting arm 210 is higher than the loop structure 110 hooked by the proximal connecting arm 210, the distal connecting arm 210 hooks the Mth loop structure 110, and the proximal connecting arm 210 hooks the Nth loop structure 110.
[0031] The user swings the second end of the operating handle 200 upward. The operating handle 200 uses the connection between the distal connecting arm 210 and the Mth loop structure 110 as a fixed support. The proximal connecting arm 210 separates from the Nth loop structure 110, and the proximal connecting arm 210 moves upward. The proximal connecting arm 210 hooks the (N + 1)th loop structure 110, and the heavy object moves upward by the height of one loop structure 110. The user then swings the second end of the operating handle 200 downward. The operating handle 200 uses the connection between the proximal connecting arm 210 and the (N + 1)th loop structure 110 as a fixed support. The distal connecting arm 210 separates from the Mth loop structure 110, and the distal connecting arm 210 moves upward. The distal connecting arm 210 hooks the (M + 1)th loop structure 110, and the heavy object moves upward by the height of one loop structure 110. The user swings the second end of the operating handle 200 up and down, and the two connecting arms 210 rise alternately in this way, thus realizing the upward movement of the heavy object.
[0032] When the lifting tool moves the heavy object downward, before the user operates the lifting tool, the second end of the operating handle 200 tilts upward, the second end of the operating handle 200 is higher than the first end, the hook 211 of the connecting arm 210 at the distal end is lower than the hook 211 of the connecting arm 210 at the proximal end, the ring structure 110 hooked by the connecting arm 210 at the distal end is lower than the ring structure 110 hooked by the connecting arm 210 at the proximal end, the connecting arm 210 at the distal end hooks the Nth ring structure 110, and the connecting arm 210 at the proximal end hooks the Mth ring structure 110.
[0033] The user swings the second end of the operating handle 200 downward. The operating handle 200 uses the connection between the connecting arm 210 at the distal end and the Nth ring structure 110 as a fixed support. The connecting arm 210 at the proximal end separates from the Mth ring structure 110. The connecting arm 210 at the proximal end moves downward. The connecting arm 210 at the proximal end hooks the (M - 1)th ring structure 110, and the heavy object moves downward by the height of one ring structure 110. The user continues to swing the second end of the operating handle 200 upward. The operating handle 200 uses the connection between the connecting arm 210 at the proximal end and the (N - 1)th ring structure 110 as a fixed support. The connecting arm 210 at the distal end separates from the Nth ring structure 110. The connecting arm 210 at the distal end moves downward. The connecting arm 210 at the distal end hooks the (M - 1)th ring structure 110, and the heavy object moves downward by the height of one ring structure 110. The user swings the second end of the operating handle 200 up and down. The two connecting arms 210 alternate and descend in this way, so as to realize the downward movement of the heavy object.
[0034] It can be understood that by designing the interval between the installation positions of the two connecting arms 210 on the operating handle 200, the lifting tool further designs the distance that the connecting arm 210 rises or descends each time the user swings the operating handle 200. In this case, the distance that the connecting arm 210 rises or descends each time can also be designed to be at least the height of two ring structures 110, so that the distance that the heavy object moves upward or downward each time is at least the height of two ring structures 110.
[0035] It should be noted that when the user swings the second end of the operating handle 200 up and down, the user fixes and locks the hook 211 of the connecting arm 210 serving as the fixed support with the corresponding ring structure 110 to help the hook 211 of the other connecting arm 210 separate from the corresponding ring structure 110, so as to ensure that the two connecting arms 210 alternate and descend or alternate and rise.
[0036] As an implementation manner, the chain 100 is located between the two connecting arms 210. The hooks 211 of the two connecting arms 210 respectively hook the ring structure 110 from both sides of the chain 100, improving the balance among the operating handle 200, the connecting arms 210 and the chain 100, and facilitating the alternate rising or descending of the two connecting arms 210 and avoiding interference between the two connecting arms 210.
[0037] Furthermore, there is a tendency for the two connecting arms 210 to swing towards each other, so that the upper ends of the two connecting arms 210 can approach the ring structure 110 to be hooked, ensuring that the hook 211 can automatically hook the corresponding ring structure 110. In this case, when the connecting arm 210 is separated from the corresponding ring structure 110, after the connecting arm 210 rises or falls, the connecting arm 210 can automatically hook the ring structure 110 on the chain 100.
[0038] Specifically, the lifting tool includes an elastic member 220. The two ends of the elastic member 220 are respectively connected to the two connecting arms 210, and the two ends of the elastic member 220 respectively apply tensile forces to the two connecting arms 210. The two ends of the elastic member 220 are respectively arranged in the middle of the two connecting arms 210. When the two connecting arms 210 move away from each other, the elastic member 220 is stretched to generate an elastic force, so that the two connecting arms 210 have a tendency to swing towards each other.
[0039] In some examples, the elastic member 220 is set as a spring, and the spring is a tension spring.
[0040] Of course, regarding the implementation method of the swing towards each other between the two connecting arms 210, it can at least be alternatively designed as: a torsion spring is sleeved on the hinge shaft of the connecting arm 210 and the operating handle 200, and the torsion spring acts on the operating handle 200 and the connecting arm 210 respectively. Under the action of the torsion spring, the connecting arm 210 can automatically rotate and make the hook 211 approach the ring structure 110.
[0041] As an implementation method, a positioning groove 212 is arranged on the surface of the hook 211. The hook 211 is bent and extended to one side at the upper end of the connecting arm 210, and the positioning groove 212 is formed along the extending direction of the hook 211. When the connecting arm 210 moves upward or downward, the surface of the hook 211 slides in contact with the surface of the ring structure 110 adjacent to the ring structure 110 hooked by the positioning groove 212, so that the hook 211 can be separated from the ring structure 110 smoothly.
[0042] Specifically, a positioning groove 212 is arranged on the upper side surface of the hook 211. A positioning groove 212 is arranged on the lower side surface of the hook 211.
[0043] As an implementation method, the lifting tool includes a direction switching component, and the direction switching component drives the two connecting arms 210 to rotate to adjust the lifting tool to move the heavy object upward or downward.
[0044] When the user needs to use the lifting tool to move the heavy object upward, in cooperation with the downwardly inclined operating handle 200, the user makes the hook 211 of the distal connecting arm 210 higher than the hook 211 of the proximal connecting arm 210 through the direction switching component, so that the operating handle 200 can be suspended on the chain 100 in an inclined downward posture.
[0045] Accordingly, when the user needs to use the lifting tool to move the heavy object downward, in cooperation with the upwardly inclined operating handle 200, the user makes the hook 211 of the distal connecting arm 210 lower than the hook 211 of the proximal connecting arm 210 through the direction switching component, so that the operating handle 200 can be suspended on the chain 100 in an upwardly inclined posture.
[0046] In some examples, the direction switching component includes a switching handle 310 and a connecting rod 320. The switching handle 310 is hinged to the operating handle 200, the connecting rod 320 is arranged along the length direction of the operating handle 200, and one end of the connecting rod 320 is hinged to the switching handle 310. The switching handle 310 can tilt towards the direction close to the connecting arm 210. The switching handle 310 drives the two connecting arms 210 to tilt through the connecting rod 320, and the tilting direction of the connecting arm 210 is the same as that of the switching handle 310. Or, the switching handle 310 can tilt towards the direction away from the connecting arm 210. The switching handle 310 drives the two connecting arms 210 to tilt through the connecting rod 320, and the tilting direction of the connecting arm 210 is the same as that of the switching handle 310.
[0047] It should be noted that when the user toggles the switching handle 310, the lifting tool can be switched to move the heavy object upward or downward.
[0048] Furthermore, the direction switching component includes a hinge member 330. The hinge member 330 is hinged to the operating handle 200, the other end of the connecting rod 320 is hinged to the hinge member 330, and the switching handle 310 drives the hinge member 330 to tilt through the connecting rod 320. The hinge member 330 is respectively hinged to the two connecting arms 210. Driven by the switching handle 310, the hinge member 330 drives the two connecting arms 210 to tilt. Specifically, when the user toggles the switching handle 310 along the length direction of the operating handle 200, the switching handle 310 drives the two connecting arms 210 to rotate synchronously on the operating handle 200 through the connecting rod 320.
[0049] Regarding the direction switching component, there are at least the following alternative examples.
[0050] In some alternative examples, the direction switching component includes a switching handle 310 and two connecting rods 320. The two connecting rods 320 are arranged along the length direction of the operating handle 200, the two connecting rods 320 are arranged in parallel, the switching handle 310 is hinged to the operating handle 200, and one end of each of the two connecting rods 320 is hinged to the switching handle 310. The other end of one connecting rod 320 is hinged to one connecting arm 210, and the other end of the other connecting rod 320 is hinged to the other connecting arm 210. When the user toggles the switching handle 310, the switching handle 310 drives the two connecting arms 210 to tilt through the two connecting rods 320.
[0051] As an implementation manner, the connection position between the suspension structure 120 and the operating handle 200 is located between the hinge positions of the two connecting arms 210 and the operating handle 200 to improve the balance of the suspended heavy object.
[0052] It can be understood that the operating handle 200 uses the first end as the force application point for suspending the heavy object, and the connecting arm 210 is arranged at the first end. The user applies force at the second end of the operating handle 200 and moves the heavy object up and down by means of the lever principle, which is labor-saving, flexible and reliable.
[0053] The embodiments of the present application have been described in detail above with reference to the accompanying drawings. However, the present application is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.
Claims
1. A lifting tool, characterized in that: include a chain, the chain comprising a plurality of ring structures; An operating handle, a first end of which is used to lift a heavy object through a suspension structure; Two connecting arms, both of which are hinged to the first end of the operating handle, the upper ends of the two connecting arms are hooked on the ring structure, and the two connecting arms are spaced apart along the length direction of the operating handle; One of the connecting arms hooks the Nth ring structure, the other connecting arm hooks the Mth ring structure, and MN≥2.
2. The lifting tool according to claim 1, characterized in that: The chain is located between the two connecting arms, and the two connecting arms have a tendency to swing toward each other, and the upper ends of the two connecting arms can be close to the ring structure to be hooked.
3. The lifting tool according to claim 2, characterized in that: The lifting tool comprises an elastic member, two ends of which are respectively connected to the two connecting arms, and the two ends of the elastic member respectively apply tension to the two connecting arms.
4. The lifting tool according to claim 3, characterized in that: The elastic member is configured as a spring.
5. The lifting tool according to claim 2, characterized in that: A torsion spring is provided on the hinged shaft sleeve between the connecting arm and the operating handle.
6. The lifting tool according to any one of claims 1 to 5, characterized in that: A hook is arranged at the upper end of the connecting arm, a positioning groove is arranged on the surface of the hook, and the positioning groove is formed along the extending direction of the hook.
7. The lifting tool according to any one of claims 1 to 5, characterized in that: The lifting tool comprises a direction switching component, and the direction switching component drives the two connecting arms to rotate so as to adjust the lifting tool to move the heavy object upward or downward.
8. The lifting tool according to claim 7, characterized in that: The direction switching assembly includes a switching handle, a connecting rod and a hinge, the switching handle is hinged to the operating handle, one end of the connecting rod is hinged to the switching handle, and the other end of the connecting rod is hinged to the hinge, and the hinge respectively hinges the two connecting arms and the operating handle; when the user moves the switching handle along the length direction of the operating handle, the switching handle drives the two connecting arms to rotate synchronously on the operating handle through the connecting rod.
9. The lifting tool according to claim 7, characterized in that: The direction switching assembly includes a switching handle and a connecting rod, the switching handle is hinged to the operating handle, and the connecting rod is provided in two, one end of each of the two connecting rods is hinged to the switching handle, the other end of one of the connecting rods is hinged to one of the connecting arms, and the other end of the other connecting rod is hinged to the other connecting arm.
10. The lifting tool according to claim 1, characterized in that: The connection position between the suspension structure and the operating handle is between the hinged positions between the two connecting arms and the operating handle.