A convenient lifting device and a weight trolley

Abstract

A kind of convenient lifting device, including lifting mechanism fixed in the bottom of weight trolley, the top of lifting mechanism is provided with slide rail assembly, the bottom of lifting mechanism is provided with bottom plate, lifting mechanism includes mounting plate, mounting seat fixed in the bottom of mounting plate, movable rod movably arranged in the first slot of both sides of mounting plate and extension mechanism, one end of screw rod is arranged in mounting seat, the other end of screw rod is connected with motor by coupling, the slide table on screw rod is fixedly connected with movable rod, the positive rotation of motor shaft makes screw rod rotate, in turn, movable rod fixedly connected with slide table advances in first slot and promotes extension mechanism to unfold, the height of lifting mechanism becomes higher, the cooperation of lifting mechanism and slide rail assembly can realize the lifting of weight trolley fixed in lifting mechanism and also can realize the front and back movement of weight trolley at specified height, which is conducive to weight trolley to cross different height ladder platform.

Description

Technical Field

[0001] This utility model relates to the field of mechanical lifting technology, and in particular to a convenient lifting device and a weight trolley. Background Technology

[0002] An elevator is a vertical lifting machine powered by an electric motor, equipped with a box-shaped cabin, used for transporting people or goods in multi-story buildings. To prevent elevator safety accidents, the State Administration for Market Regulation has revised relevant standards and safety technical specifications, such as TSG T7001-2023 "Rules for Supervision and Periodic Inspection of Elevators." These rules include testing items such as braking tests and balance coefficient tests, greatly increasing elevator safety. However, braking and balance coefficient tests require the use of weights, which are manually moved one by one, resulting in immense labor intensity. Therefore, weight carts capable of transporting multiple weights have emerged as a solution.

[0003] However, during the process of transporting the weight cart to the designated elevator, the weight cart will encounter steps of different heights, making it difficult for the weight cart to move. Based on this, a convenient lifting device and a weight cart are designed. Utility Model Content

[0004] The present invention aims to overcome the defects in the prior art and provide a convenient lifting device and a weight trolley.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a convenient lifting device, comprising a lifting mechanism fixed to the bottom of a weight cart and capable of raising or lowering the weight cart; a slide rail assembly at the top of the lifting mechanism enabling the weight cart to move back and forth; a base plate at the bottom of the lifting mechanism; a mounting plate, a mounting seat fixed to the bottom of the mounting plate, movable rods movably disposed in first slots on both sides of the mounting plate, and an extension mechanism; one end of a screw is disposed in the mounting seat, and the other end of the screw is connected to a motor via a coupling; a slide on the screw is fixedly connected to the movable rod; the forward rotation of the motor shaft causes the screw to rotate, thereby causing the movable rod fixedly connected to the slide to advance in the first slot, thus unfolding the extension mechanism and increasing the height of the lifting mechanism.

[0006] As a preferred embodiment of this utility model, there are at least two lifting mechanisms, which are symmetrically arranged on the base plate.

[0007] In a preferred embodiment of this utility model, the mounting base is provided with a bearing, the screw has a thread in the middle and two ends are optical shafts, the optical shaft at one end of the screw is disposed in the bearing of the mounting base, and the optical shaft at the other end of the screw is disposed in the coupling.

[0008] As a preferred embodiment of this utility model, the mounting plate includes folded plates on both sides, the first slot is located on the folded plates, and the movable rod includes a main rod and abutment blocks located on both sides of the main rod, the abutment blocks abutting against the inner wall of the folded plates.

[0009] In a preferred embodiment of this utility model, a fixing plate is provided between the mounting plate and the motor, the motor is mounted on the fixing plate, and the fixing plate is mounted on the mounting plate.

[0010] As a preferred embodiment of the present invention, the lifting mechanism further includes a base, and the extension mechanism is located between the mounting plate and the base, and there is at least one extension mechanism.

[0011] As a preferred embodiment of the present invention, the base has a second groove, the position of which corresponds to the first groove.

[0012] As a preferred embodiment of this utility model, the extension mechanism includes symmetrically arranged extension plate groups and a linkage group connecting the symmetrical extension plate groups. The extension plate group includes a first extension plate and a second extension plate that are arranged at an angle and cross each other in the middle. The linkage group includes a first link and a second link connecting the first extension plate and the second extension plate. The first extension plate and the second extension plate are movably connected at their intersection by the first link. The first extension plate and the second extension plate are provided with second links on both sides.

[0013] As a preferred embodiment of this utility model, the second link is fixed in a designated position or can achieve flexible movement.

[0014] A weight cart includes a convenient lifting device installed at the bottom of the weight cart body.

[0015] The beneficial effects of this utility model are: 1. The combination of the lifting mechanism and the slide rail assembly of this utility model can realize both the lifting and lowering of the device fixed on the top of the lifting mechanism and the forward and backward movement of the device at a specified height, which is beneficial for the device fixed on the top of the lifting mechanism to cross stair platforms of different heights.

[0016] 2. The convenient lifting device of this utility model adopts multiple extension mechanisms to expand the range of height change of the lifting mechanism, so that the lifting device can be widely used for crossing different stepped platforms.

[0017] 3. The weight cart of this utility model can cross stair platforms of different heights, making the weight cart move easily and facilitating the rapid transport of the weight cart to the designated elevator. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram showing the connection of the movable rod, slide, screw, mounting base and motor of this utility model; Figure 3 This is a schematic diagram of the slide rail assembly of this utility model; Figure 4 Installation diagram of this utility model; Figure 5 Diagram of the usage status of this utility model; The attached figures are labeled as follows: 1. Lifting mechanism, 2. Slide rail assembly, 3. Base plate, 4. Weight trolley body, 5. Fixed plate, 11. Mounting plate, 12. Mounting seat, 13. Movable rod, 14. Extension mechanism, 15. Coupling, 16. Motor, 17. Slide table, 18. Base, 19. Screw, 111. First slot, 112. Folding plate, 131. Main rod, 132. Abutment block, 141. First extension plate, 142. Second extension plate, 143. First connecting rod, 144. Second connecting rod, 181. Second slot. Detailed Implementation

[0019] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-5 As shown, a convenient lifting device includes a lifting mechanism 1 fixed to the bottom of a weight cart and capable of raising or lowering the weight cart. The top of the lifting mechanism 1 is provided with a slide rail assembly 2 that enables the weight cart to move back and forth. The bottom of the lifting mechanism 1 is provided with a base plate 3. The lifting mechanism 1 includes a mounting plate 11, a mounting seat 12 fixed to the bottom of the mounting plate 11, a movable rod 13 movably disposed in the first slots 111 on both sides of the mounting plate 11, and an extension mechanism 14. One end of a screw 19 is disposed in the mounting seat 12. The other end of the screw 19 is connected to a motor 16 through a coupling 15. A slide table 17 on the screw 19 is fixedly connected to the movable rod 13. The forward rotation of the motor shaft of the motor 16 causes the screw 19 to rotate, thereby causing the movable rod 13, which is fixedly connected to the slide table 17, to advance in the first slots 111, causing the extension mechanism 14 to unfold, and the height of the lifting mechanism 1 increases.

[0021] The mounting plate 11 has multiple round holes around its perimeter, which facilitates the bolts to pass through the holes to secure the lifting device and the weight trolley.

[0022] Specifically, motor 16 is mounted and fixed on mounting plate 11 relative to mounting base 12. When motor 16 starts, the motor shaft of motor 16 rotates clockwise, which drives screw 19 to rotate clockwise. Movable rod 13, which is fixedly connected to slide table 17, moves forward under the guidance of first slot 111, thereby extending mechanism 14 and increasing the height of lifting mechanism 1. When the lifting mechanism 1 reaches the specified height, the base plate 3 comes into contact with the ground, the motor shaft of the motor 16 stops rotating, the bolts used to fix the mounting plate 11 and the weight trolley are removed, and due to the presence of the slide rail assembly 2, the weight trolley that is movably connected to the mounting plate 11 is pushed. The weight trolley that is movably connected to the mounting plate 11 can move back and forth at the specified height, ensuring that the weight trolley can cross the stepped platform of different heights. Furthermore, after the front wheels of the weight cart and part of the stepped platform reach the designated height, the reverse rotation of the motor 16 can drive the screw 19 to rotate counterclockwise. The movable rod 13, which is fixedly connected to the slide table 17, moves backward under the guidance of the first slot 111, thereby causing the extension mechanism 14 to retract, the height value of the lifting mechanism 1 to decrease, and then the entire weight cart can be pushed into the stepped platform.

[0023] It should be noted that the lifting device of this utility model is not limited to use under the weight cart, but can also be fixed under other devices that need to cross different height steps.

[0024] The combination of the lifting mechanism 1 and the slide rail assembly 2 of this utility model can realize both the lifting and lowering of the device fixed on the top of the lifting mechanism 1 and the forward and backward movement of the device at a specified height, which is beneficial for the device fixed on the top of the lifting mechanism 1 to cross stepped platforms of different heights.

[0025] In order to increase the load capacity of the lifting mechanism 1, there are at least two lifting mechanisms 1, and in order to make the load capacity of each lifting mechanism 1 uniform, the lifting mechanisms 1 are symmetrically arranged on the base plate 3.

[0026] Apart from Figure 1 As shown in the left-right symmetrical arrangement, the lifting mechanism 1 can also be arranged front-back. Furthermore, the height, width, and length of the lifting mechanism 1 can be adjusted and adapted according to the structure of the weight cart and the device located on top of it.

[0027] Furthermore, the specific structure of the lifting mechanism 1 will be described in detail.

[0028] The screw 19 has a thread in the middle and smooth shafts at both ends. The thread of the screw 19 is adapted to the threaded hole in the middle of the movable rod 13. The smooth shaft at one end of the screw 19 is located in the bearing of the mounting base 12. The smooth shaft at the other end of the screw 19 is connected to the motor shaft of the motor 16 through the coupling 15. The cooperation between the mounting base 12 and the coupling 15 provides support and drive for the screw 19, thereby enabling the movable rod 13 to move back and forth with the screw 19 as the reference.

[0029] The mounting plate 11 includes two folded plates 112 on both sides. The first slot 111 is located on the folded plate 112. The movable rod 13 includes a main rod 131 and abutment blocks 132 located on both sides of the main rod 131. The abutment blocks 132 abut against the inner wall of the folded plate 112, making it difficult for the movable rod 13 to come out of the first slot 111, and facilitating the forward and backward movement of the movable rod 13.

[0030] A fixing plate 5 is provided between the mounting plate 11 and the motor 16. The motor 16 is mounted on the fixing plate 5, and the fixing plate 5 is mounted on the mounting plate 11, which ensures the stability of the connection of the motor 16.

[0031] Furthermore, the specific structure of the extension mechanism 14 will be described in detail.

[0032] The lifting mechanism 1 also includes a base 18, and the extension mechanism 14 is located between the mounting plate 11 and the base 18, and there is at least one extension mechanism 14.

[0033] The base 18 has a second slot 181, the position of which corresponds to the first slot 111. The second slot 181 is used to accommodate the positional change of the second link 144 when the extension mechanism 14 is extended or retracted.

[0034] The extension mechanism 14 includes symmetrically arranged extension plate groups and a linkage group connecting the symmetrical extension plate groups. The extension plate groups include a first extension plate 141 and a second extension plate 142 that are arranged at an angle and cross each other in the middle. The linkage group includes a first link 143 and a second link 144 that connect the first extension plate 141 and the second extension plate 142. The first extension plate 141 and the second extension plate 142 are movably connected at their intersection by the first link 143. The second link 144 is provided on both sides of the first extension plate 141 and the second extension plate 142.

[0035] The second link 144 is fixed in a designated position or can perform flexible movements.

[0036] Specifically, in this utility model, the lifting mechanism 1 has two extension mechanisms 14. One extension mechanism 14 connected to the mounting plate 11 has a second connecting rod 144 that is a movable rod 13, which is movably disposed in the first slot 111, and the other second connecting rod 144 is fixedly connected to the mounting plate 11. The other extension mechanism 14 connected to the base 18 has a second connecting rod 144 that is movably disposed in the second slot 181, and the other second connecting rod 144 is fixedly connected to the base 18. Adjacent extension mechanisms 14 are connected by two second connecting rods 144.

[0037] This invention employs multiple extension mechanisms 14 to expand the range of height variation of the lifting mechanism 1, enabling the lifting device to be widely applicable to crossing different stepped platforms.

[0038] Of course, the extension mechanism 14 is also included in the protection scope of this utility model when there is only one extension mechanism 14. When there is only one extension mechanism 14, the second connecting rod 144 connecting the first extension plate 141 and the mounting plate 11 is a movable rod 13, the second connecting rod 144 connecting the first extension plate 141 and the base 18 is fixed, the second connecting rod 144 connecting the second extension plate 142 and the mounting plate 11 is fixed, and the second connecting rod 144 connecting the second extension plate 142 and the base 18 is movable and corresponds vertically to the movable rod 13.

[0039] Multiple extension mechanisms 14 are also included in the protection scope of this utility model. When there are multiple extension mechanisms 14, as long as the extension mechanism 14 connected to the mounting plate 11 has one second connecting rod 144 that is a movable rod 13, which is movably disposed in the first slot 111, and the other second connecting rod 144 is fixedly connected to the mounting plate 11; and the extension mechanism 14 connected to the base 18 has one second connecting rod 144 that is movably disposed in the second slot 181, which is vertically corresponding to the movable rod 13, and the other second connecting rod 144 is fixedly connected to the base 18; and adjacent extension mechanisms 14 are all connected through the second connecting rod 144, which can satisfy the extension mechanism 14 to extend or retract, thereby realizing the height change of the lifting mechanism 1.

[0040] A weight cart includes a convenient lifting device installed at the bottom of the weight cart body 4. When the height of the convenient lifting device increases, the weight cart body 4 is raised to a step of a specified height, and then transported to a designated platform via a slide rail assembly 2.

[0041] It should be noted that the width of the convenient lifting device is less than the shortest distance between the front or rear wheels of the weight cart body 4, thus facilitating the unfolding or retraction of the convenient lifting device.

[0042] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention; therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0043] Although this document frequently uses reference numerals from the accompanying drawings: 1. Lifting mechanism, 2. Slide rail assembly, 3. Base plate, 4. Weight trolley body, 5. Fixing plate, 11. Mounting plate, 12. Mounting seat, 13. Movable rod, 14. Extension mechanism, 15. Coupling, 16. Motor, 17. Slide table, 18. Base, 19. Screw, 111. First slot, 112. Folding plate, 131. Main rod, 132. Abutment block, 141. First extension plate, 142. Second extension plate, 143. First connecting rod, 144. Second connecting rod, 181. Second slot, etc., the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A convenient lifting device, characterized in that, The lifting mechanism (1) is fixed to the bottom of the weight cart and can raise or lower the weight cart. The top of the lifting mechanism (1) is provided with a slide rail assembly (2) that can move the weight cart back and forth. The bottom of the lifting mechanism (1) is provided with a base plate (3). The lifting mechanism (1) includes a mounting plate (11), a mounting seat (12) fixed to the bottom of the mounting plate (11), a movable rod (13) movably disposed in the first slots (111) on both sides of the mounting plate (11), and an extension mechanism (14). The mounting base (12) is provided with one end of a screw (19), and the other end of the screw (19) is connected to the motor (16) through a coupling (15). The slide (17) on the screw (19) is fixedly connected to the movable rod (13). The forward rotation of the motor shaft of the motor (16) causes the screw (19) to rotate, and the movable rod (13) fixedly connected to the slide (17) moves forward in the first slot (111) to cause the extension mechanism (14) to unfold, and the height of the lifting mechanism (1) increases.

2. The convenient lifting device according to claim 1, characterized in that, There are at least two lifting mechanisms (1), which are symmetrically arranged on the base plate (3).

3. The convenient lifting device according to claim 1, characterized in that, The mounting base (12) is provided with a bearing, the screw (19) has a thread in the middle and optical shafts at both ends. The optical shaft at one end of the screw (19) is set in the bearing of the mounting base (12), and the optical shaft at the other end of the screw (19) is set in the coupling (15).

4. A convenient lifting device according to claim 3, characterized in that, The mounting plate (11) includes two folded plates (112) on both sides, the first slot (111) is located on the folded plate (112), and the movable rod (13) includes a main rod (131) and abutment blocks (132) located on both sides of the main rod (131), the abutment blocks (132) abut against the inner wall of the folded plate (112).

5. A convenient lifting device according to claim 1, characterized in that, A fixing plate (5) is provided between the mounting plate (11) and the motor (16), the motor (16) is mounted on the fixing plate (5), and the fixing plate (5) is mounted on the mounting plate (11).

6. A convenient lifting device according to claim 1, characterized in that, The lifting mechanism (1) also includes a base (18), and the extension mechanism (14) is located between the mounting plate (11) and the base (18), and there is at least one extension mechanism (14).

7. A convenient lifting device according to claim 6, characterized in that, The base (18) has a second slot (181) which is located opposite to the first slot (111).

8. A convenient lifting device according to claim 6, characterized in that, The extension mechanism (14) includes a symmetrically arranged extension plate group and a linkage group connecting the symmetrical extension plate group. The extension plate group includes a first extension plate (141) and a second extension plate (142) arranged at an angle and intersecting in the middle. The linkage group includes a first linkage (143) and a second linkage (144) connecting the first extension plate (141) and the second extension plate (142). The first extension plate (141) and the second extension plate (142) are movably connected at the intersection through the first linkage (143). The first extension plate (141) and the second extension plate (142) are provided with second linkages (144) on both sides.

9. A convenient lifting device according to claim 8, characterized in that, The second link (144) is fixed in a designated position or can perform flexible movements.

10. A weight cart, characterized in that, The convenient lifting device includes any one of claims 1-9, wherein the convenient lifting device is installed at the bottom of the weight cart body (4).

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