Lifting device convenient to operate

Abstract

A lifting device convenient to operate relates to the technical field of lifting equipment and comprises an outer sleeve, a center sleeve is connected to the inner side of the outer sleeve in an up-down sliding mode, an inner core pipe is connected to the inner side of the center sleeve in an up-down sliding mode, a supporting box is fixed to the side face of the outer sleeve, and a gear is rotationally connected to the inner side of the supporting box through a rotating shaft. A limiting mechanism for locking the gear is installed on the inner side of the supporting box, a rack is fixed to the side face of the center sleeve and meshed with teeth of the gear, a pulley is rotationally connected to the side face of the top of the center sleeve, a steel wire is fixed to the side face of the bottom of the inner core pipe, the steel wire penetrates through the pulley, and the other end of the steel wire is fixedly connected with the supporting box. Compared with an existing lifting device, the lifting device convenient to operate is simple in structure, light in weight, convenient to operate, free of being connected with a power source, capable of being operated by one person and low in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of lifting equipment, in particular to a lifting device which is easy to operate. Background Art

[0002] Lifting devices are needed for lifting objects in mining, decoration, warehousing, railways, shipping and engineering machinery fields. Existing lifting devices have complex structures, heavy weights, and are inconvenient to operate. They need to be connected to a power supply, making it difficult for one person to complete the operation. The cost is high and cannot meet usage needs. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a lifting device that is easy to operate. Compared with the existing lifting devices, the lifting device has a simple structure, light weight, and convenient operation. It does not need to be connected to a power supply, and can be operated by one person. It has low cost and can effectively solve the problems in the background technology.

[0004] In order to achieve the purpose of the utility model, the utility model adopts the following technical solutions:

[0005] A lifting device that is easy to operate, comprising an outer sleeve, the inner side of the outer sleeve is slidably connected to a central sleeve up and down, the inner side of the central sleeve is slidably connected to an inner core tube up and down, a support box is fixed to the side of the outer sleeve, the inner side of the support box is rotatably connected to a gear through a rotating shaft, a limiting mechanism for locking the gear is installed on the inner side of the support box, a rack is fixed to the side of the central sleeve, the rack is meshed with the gear teeth, a pulley is rotatably connected to the top side of the central sleeve, a steel wire is fixed to the bottom side of the inner core tube, the steel wire passes through the pulley and the other end is fixedly connected to the support box, and a supporting plate is fixed to the top of the inner core tube;

[0006] A stabilizing foot ear seat is fixed on the bottom side of the outer sleeve, and a stabilizing foot is rotatably connected to the stabilizing foot ear seat;

[0007] Wherein, it also includes a lifting handle, and the lifting handle is fixed at the end of the rotating shaft.

[0008] Furthermore, the support plate includes an annular frame, support arms and connecting parts. There are four support arms, which are arranged in a rotating array. The ends of the support arms are welded and fixed to the inner side of the annular frame. A connecting part is fixed at the bottom of the intersection of the four support arms. The connecting part is a square flange, and the connecting part is fixed to the top of the inner core tube.

[0009] Furthermore, the limiting mechanism includes a limiting handle, an ear seat, a connecting shaft and a torsion spring, the ear seat is fixed to the side of the limiting handle, the end of the connecting shaft is fixedly connected to the support box, the ear seat is connected to the connecting shaft for relative rotation, the torsion spring is sleeved on the connecting shaft, the torsion spring is fixed on the connecting shaft, the end of the torsion spring is fixedly connected to the ear seat, and the end of the limiting handle is set corresponding to the gear.

[0010] Furthermore, the stabilizing foot ear seat is provided with two fixing holes for locking the stabilizing foot. When the stabilizing foot is placed or stored, the stabilizing foot is locked on the stabilizing foot ear seat by passing a pin through the fixing holes.

[0011] Furthermore, the ground contact surface of the stabilizing foot is a chamfered surface.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the lifting device, which is easy to operate, has the following advantages: the lifting handle drives the gear to rotate, the gear and the rack are meshed for transmission, and the rack drives the central sleeve to perform lifting movements. The limiting mechanism limits the gear after the height adjustment is completed, thereby locking the central sleeve. Compared with the existing lifting device, the lifting device has a simple structure, light weight, and convenient operation. It does not need to be connected to a power source, and can be operated by one person, with low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0015] Figure 3 It is a schematic diagram of the top view structure of the utility model;

[0016] Figure 4 It is a schematic diagram of the partial structure of the support plate of the utility model;

[0017] Figure 5 This is a partial structural diagram of the lifting handle of the utility model;

[0018] Figure 6 This is a schematic diagram of the partial structure of the central sleeve of the utility model;

[0019] Figure 7 It is a schematic diagram of the local structure of the limit handle of the utility model;

[0020] Figure 8 This is a partial top view of the structure of the limit handle of the utility model;

[0021] Fig. 9 It is a schematic diagram of the local structure of the outer sleeve of the utility model.

[0022] In the figure: 1-outer sleeve, 2-inner core tube, 3-support plate, 31 annular frame, 32 support arm, 33 connecting member, 4-limiting mechanism, 41 limiting handle, 42 ear seat, 43 connecting shaft, 44 torsion spring, 5-pulley, 6-center sleeve, 7-steel wire, 8-rotating shaft, 9-gear, 10-support box, 11-lifting handle, 12-stabilizing foot, 13-stabilizing foot ear seat, 14-fixing hole, 15 rack. DETAILED DESCRIPTION

[0023] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

[0024] See also Figure 1-9 , this embodiment provides a technical solution: a lifting device that is easy to operate, including an outer sleeve 1, the inner side of the outer sleeve 1 is slidably connected to the central sleeve 6, the inner side of the central sleeve 6 is slidably connected to the inner core tube 2, a support box 10 is fixed on the side of the outer sleeve 1, the inner side of the support box 10 is rotatably connected to the gear 9 through the rotating shaft 8, and a limiting mechanism 4 for locking the gear 9 is installed on the inner side of the support box 10, a rack 15 is fixed on the side of the central sleeve 6, and the rack 15 is meshed with the gear 9. The top side of the central sleeve 6 is rotatably connected to the pulley 5, and the bottom side of the inner core tube 2 is fixed with a steel wire 7, the steel wire 7 passes through the pulley 5 and the other end is fixedly connected to the support box 10, and the top of the inner core tube 2 is fixed with a supporting plate 3;

[0025] A stabilizing foot ear seat 13 is fixed to the bottom side of the outer sleeve 1, and a stabilizing foot 12 is rotatably connected to the stabilizing foot ear seat 13. The outer sleeve 1 is the main component of the lifting device and plays a supporting and guiding role;

[0026] It also includes a lifting handle 11 which is fixed to the end of the rotating shaft 8 .

[0027] The support plate 3 includes an annular frame 31, support arms 32 and connecting pieces 33. There are four support arms 32, which are arranged in a rotating array. The ends of the support arms 32 are welded and fixed to the inner side of the annular frame 31. The connecting pieces 33 are fixed to the bottom of the intersections of the four support arms 32. The connecting pieces 33 are square flanges, which are fixed to the top of the inner core tube 2. The annular frame 31 is formed by rolling a round tube to increase the support space. The support arms 32 are round tube structures, which are used to increase the bearing strength of the entire support plate 3.

[0028] The limiting mechanism 4 includes a limiting handle 41, an ear seat 42, a connecting shaft 43 and a torsion spring 44. The ear seat 42 is fixed to the side of the limiting handle 41. The end of the connecting shaft 43 is fixedly connected to the support box 10. The ear seat 42 is connected to the connecting shaft 43 for relative rotation. The torsion spring 44 is sleeved on the connecting shaft 43. The torsion spring 44 is fixed on the connecting shaft 43. The end of the torsion spring 44 is fixedly connected to the ear seat 42. The end of the limiting handle 41 is set corresponding to the gear 9. The user lifts the limiting handle 41 with one hand, and the end of the limiting handle 41 is removed from the gear 9, thereby releasing the limiting effect on the gear 9. Then, the other hand rotates the lifting handle 11. The lifting handle 11 drives the gear 9 to rotate through the rotating shaft 8. The gear 9 is meshed with the rack 15 for transmission. The rack 15 drives the central sleeve 6 to perform lifting and lowering movements. At this time, the height of the pulley 5 rises and falls with the movement of the central sleeve 6, and the steel wire 7 moves along the pulley 5. One end of the steel wire 7 is fixed on the support box 10 and the height remains unchanged. The other end of the steel wire 7 pulls the inner core tube 2 and the central sleeve 6 to slide relative to each other, so that the inner core tube 2 drives the supporting plate 3 to rise and fall. After the height adjustment is completed, the hand releases the limit handle 41. At this time, the torsion spring 44 restores its deformation, and the deformation force of the torsion spring 44 reacts on the ear seat 42, so that the ear seat 42 drives the limit handle 41 to return to its original position. At this time, the end of the limit handle 41 contacts the tooth groove of the gear 9, thereby limiting the rotation of the gear 9, thereby locking the central sleeve 6. Compared with the existing lifting device, it has a simple structure, light weight, and convenient operation. It does not need to be connected to a power source, and can be operated by one person, with low cost.

[0029] The stabilizing foot ear seat 13 is provided with two fixing holes 14 for locking the stabilizing foot 12. When the stabilizing foot 12 is placed or stored, the stabilizing foot 12 is locked on the stabilizing foot ear seat 13 by passing a pin through the fixing hole 14. The user first removes the stabilizing foot 12 from the folded position, and then makes the chamfered surface of the stabilizing foot 12 contact the ground, and then locks the stabilizing foot 12 on the stabilizing foot ear seat 13 by passing a pin through the fixing hole 14. After use, the stabilizing foot 12 can be folded for easy storage.

[0030] The contact surface of the stabilizing foot 12 is a chamfered surface, which facilitates stable contact with the ground.

[0031] The utility model provides a lifting device that is easy to operate. The working principle is as follows: the user first removes the stabilizing foot 12 from the folded position, and then makes the chamfered surface of the stabilizing foot 12 contact the ground. Then, the stabilizing foot 12 is locked on the stabilizing foot ear seat 13 by passing the pin shaft through the fixing hole 14. The user lifts the limit handle 41 with one hand, and the end of the limit handle 41 is moved away from the gear 9, thereby releasing the limit effect on the gear 9. Then, the other hand rotates the lifting handle 11, and the lifting handle 11 drives the gear 9 to rotate through the rotating shaft 8. The gear 9 is meshed with the rack 15 for transmission, and the rack 15 drives the central sleeve 6 to perform a lifting movement. At this time, the pulley 5 The height is raised and lowered with the movement of the central sleeve 6, and the steel wire 7 moves along the pulley 5. One end of the steel wire 7 is fixed on the support box 10 and the height remains unchanged. The other end of the steel wire 7 pulls the inner core tube 2 and the central sleeve 6 to slide relative to each other, so that the inner core tube 2 drives the supporting plate 3 to move up and down. After the height adjustment is completed, the hand releases the limit handle 41. At this time, the torsion spring 44 restores its deformation, and the deformation force of the torsion spring 44 reacts on the ear seat 42, so that the ear seat 42 drives the limit handle 41 to return to its original position. At this time, the end of the limit handle 41 contacts the tooth groove of the gear 9, thereby limiting the rotation of the gear 9, thereby locking the central sleeve 6.

[0032] It is worth noting that the components disclosed in the above embodiments are all universal standard parts or components known to technical personnel in this field, and their structures and principles can be known to technical personnel through technical manuals or through conventional experimental methods. The rotational connection can be a rotational connection through a rotating shaft, etc.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly limited. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances, for example, the rotational connection can be a rotational connection through a bearing.

[0034] The parts of the present invention that are not described in detail are prior art. Although the present invention is specifically demonstrated and introduced in conjunction with the preferred implementation scheme, there are many methods and ways to implement the technical solution. The above is only a preferred implementation scheme of the present invention. However, technical personnel in the relevant field should understand that various changes can be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined in the attached claims, which are all within the scope of protection of the present invention.

Claims

1. A lifting device that is easy to operate, comprising an outer sleeve (1), characterized in that: The inner side of the outer sleeve (1) is slidably connected to the central sleeve (6), and the inner side of the central sleeve (6) is slidably connected to the inner core tube (2). A support box (10) is fixed on the side of the outer sleeve (1), and the inner side of the support box (10) is rotatably connected to a gear (9) via a rotating shaft (8). A limiting mechanism (4) for locking the gear (9) is installed on the inner side of the support box (10). A rack (15) is fixed on the side of the central sleeve (6), and the rack (15) is meshed with the gear (9). The top side of the central sleeve (6) is rotatably connected to a pulley (5). A steel wire (7) is fixed on the bottom side of the inner core tube (2), and the steel wire (7) passes through the pulley (5) and the other end is fixedly connected to the support box (10). A supporting plate (3) is fixed on the top of the inner core tube (2); A stabilizing foot ear seat (13) is fixed to the bottom side of the outer sleeve (1), and a stabilizing foot (12) is rotatably connected to the stabilizing foot ear seat (13); It also includes a lifting handle (11), wherein the lifting handle (11) is fixed to the end of the rotating shaft (8).

2. A lifting device that is easy to operate according to claim 1, characterized in that: The support plate (3) comprises an annular frame (31), supporting arms (32) and a connecting piece (33). There are four supporting arms (32), which are arranged in a rotating array. The ends of the supporting arms (32) are welded and fixed to the inner side of the annular frame (31). A connecting piece (33) is fixed at the bottom of the intersection of the four supporting arms (32). The connecting piece (33) is a square flange. The connecting piece (33) is fixed to the top of the inner core tube (2).

3. The easy-to-operate lifting device according to claim 1, characterized in that: The limiting mechanism (4) comprises a limiting handle (41), an ear seat (42), a connecting shaft (43) and a torsion spring (44); the ear seat (42) is fixed to a side of the limiting handle (41); an end of the connecting shaft (43) is fixedly connected to the support box (10); the ear seat (42) and the connecting shaft (43) are connected to each other for relative rotation; the torsion spring (44) is sleeved on the connecting shaft (43); the torsion spring (44) is fixed to the connecting shaft (43); an end of the torsion spring (44) is fixedly connected to the ear seat (42); and an end of the limiting handle (41) is arranged corresponding to the gear (9).

4. The easy-to-operate lifting device according to claim 1, characterized in that: The stabilizing foot ear seat (13) is provided with two fixing holes (14) for locking the stabilizing foot (12); when the stabilizing foot (12) is placed or stored, a pin passes through the fixing hole (14) to lock the stabilizing foot (12) on the stabilizing foot ear seat (13).

5. The easy-to-operate lifting device according to claim 1, characterized in that: The contact surface of the stabilizing foot (12) is a chamfered surface.

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