Climbing step ladder for truck loading

Abstract

The utility model relates to the technical field of climbing step ladders for truck loading, and discloses a climbing step ladder for truck loading, which comprises universal wheels, a switching mechanism arranged on the tops of the universal wheels, an adjusting mechanism arranged on the top of the switching mechanism, the adjusting mechanism comprises a climbing assembly and a clamping assembly, the climbing assembly is arranged on the top of the switching mechanism, and the clamping assembly is arranged on the top of the switching mechanism. The clamping assembly is arranged on the back of the climbing assembly. Through the top of the ladder where a person ascends, a rotating disc is rotated, a second threaded rod is driven to rotate when the rotating disc is rotated, and when the second threaded rod rotates, a cross beam is driven to ascend and descend through threaded installation between the second threaded rod and the external cross beam, so that a clamping plate can be clamped to the top of the side edge of the back of the loading vehicle; in this way, it can be guaranteed that the ladder and the loading vehicle are connected, so that the situation that the distance between the ladder and the loading vehicle is changed due to shaking during heavy work is avoided, the ladder can be in a stable state, and the safety of personnel during work is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of a climbing step ladder for loading trucks, in particular to a climbing step ladder for loading trucks. Background Art

[0002] In order to make traditional step ladders stronger and more durable, the step ladders used in power plants and chemical companies are usually made of steel plates. This type of step ladder is relatively heavy, so it is usually dragged on the ground when moved, which is quite troublesome to carry, especially for female employees.

[0003] According to the description of the movable step ladder disclosed in the patent website (authorization announcement number: CN 205078164 U), "This patent application discloses a movable step ladder, including a step ladder body, a rotating shaft, a roller and a tension spring. Adjustment plates are provided on both sides of the step ladder body, and the adjustment plates are provided with adjustment holes for the rotating shaft to produce vertical or oblique displacement. The rotating shaft is inserted into the adjustment hole, and rollers are connected to both ends of the rotating shaft. One end of the tension spring is connected to the rotating shaft, and the other end is connected to the step ladder body. A positioning groove for matching the rotating shaft is provided on one side of the lower part of the adjustment hole. When the rotating shaft is located in the positioning groove, the bottom of the roller is lower than the bottom of the step ladder body. The movable step ladder of the utility model is easier to carry, and will not scratch the ground and the insulating pad during transportation."

[0004] In view of the above description, the applicant believes that the following problems exist:

[0005] When the utility model is in use, in order to prevent the step ladder from tipping over, the reinforcement plates hinged on both sides of the step ladder body are rotated so that the free ends of the reinforcement plates are rotated to one side of the tipping direction. Since the lower ends of the reinforcement plates are at the same height as the bottom of the step ladder body, the lower ends of the reinforcement plates can be supported on the ground to prevent the step ladder body from tipping over. In this way, when personnel are performing high-altitude operations, the ladder is in a placed state on the ground due to the high weight of the top of the ladder, and the ladder will shake, etc., which can easily cause the ladder to move, thereby causing accidents and other dangers. Utility Model Content

[0006] The purpose of the utility model is to provide a climbing step ladder for loading trucks to solve the problems raised in the above background technology.

[0007] To achieve the above-mentioned object, the present invention provides the following technical solution: a step ladder for loading trucks, comprising a universal wheel, a switching mechanism is provided on the top of the universal wheel, and an adjustment mechanism is provided on the top of the switching mechanism;

[0008] The adjustment mechanism includes a climbing component and a clamping component. The climbing component is arranged on the top of the switching mechanism, and the clamping component is arranged on the back of the climbing component.

[0009] Preferably, the switching mechanism includes a rectangular support column, a base plate is fixedly installed at the bottom of the rectangular support column, a lifting column is slidably installed inside the base plate, a synchronization plate is fixedly installed on the top of the lifting column, a threaded shaft is rotatably installed on the top of the synchronization plate, a threaded sleeve is installed on the external thread of the threaded shaft, a synchronization plate is fixedly installed on the bottom of the threaded sleeve, a synchronization wheel is fixedly installed on the top of the threaded shaft, a motor 1 is fixedly installed on the top of the synchronization wheel, a limiting shaft is installed on the external transmission of the synchronization wheel, and a synchronization belt is installed on the external transmission of the synchronization wheel, which can support and switch the device.

[0010] Preferably, two synchronization plates are provided, and both synchronization plates are fixedly mounted on the top of the lifting column. A circular through hole is provided on the top of the base plate, and the lifting column is slidably mounted inside the circular through hole. Two threaded sleeves are provided, and both threaded sleeves have threaded holes. The threaded shaft is threadedly mounted inside the threaded holes to perform limit adjustment on the support switching of the device.

[0011] Preferably, the climbing assembly includes a spacer, which is fixedly mounted on the top of a rectangular support column, a frame is fixedly mounted on the top of the spacer, a support plate is fixedly mounted on the top of the frame, a protective fence is fixedly mounted on the top of the support plate, an inclined beam is fixedly mounted on the front of the frame, and a lifting pedal is fixedly mounted on the inner side of the inclined beam, so that the required height can be reached by climbing.

[0012] Preferably, a back plate is fixedly installed on the back of the frame, two protective fences are provided, a protective fence is fixedly installed on the top of the inclined beam, six lifting pedals are provided, and the six lifting pedals are installed in an incremental manner to support and fix the climbing.

[0013] Preferably, the clamping assembly includes a lifting plate, which is fixedly mounted on the back of the frame, a crossbeam is slidably mounted inside the lifting plate, a clamping plate is slidably mounted inside the crossbeam, a fixed block is fixedly mounted on the top of the clamping plate, a rectangular block 1 is fixedly mounted on the back of the frame, a rectangular block 2 is fixedly mounted on the back of the frame, a threaded rod 2 is rotatably mounted on the top of the rectangular block 2, a turntable is fixedly mounted on the top of the threaded rod 2, a two-way threaded rod is rotatably mounted on the inner side of the top of the crossbeam, and a hexagonal nut is fixedly mounted on the right end of the two-way threaded rod, which can connect the device to the loader.

[0014] Preferably, a lifting groove is provided inside the lifting plate, the beam is slidably installed inside the lifting groove, a limiting slide groove is provided inside the book-searching beam, the card is slidably installed inside the limiting slide groove, an internal threaded through hole is provided inside the fixed block, and the bidirectional threaded rod is threadedly installed inside the internal threaded through hole, so that the placement device shakes and separates.

[0015] Compared with the prior art, the utility model provides a climbing step ladder for loading trucks, which has the following beneficial effects:

[0016] 1. The truck loading step ladder passes through the top of the ladder for people to climb when approaching, and rotates the turntable. When the turntable is rotated, the threaded rod 2 is driven to rotate. When the threaded rod 2 rotates, the crossbeam is driven to rise and fall through the threaded installation between the rod and the external crossbeam. In this way, the card plate can be clamped with the top of the back side of the loader, which can ensure the connection between the ladder and the loader. Therefore, when performing heavier operations, there will be no shaking, which will cause the distance between the ladder and the loader to change. In this way, the ladder can be kept in a stable state to ensure the safety of personnel when working.

[0017] 2. The truck loading climbing step ladder, when the ladder needs to be moved, is energized by motor 1. When motor 1 is energized, the synchronous wheel is driven to rotate through the fixed installation between the output end synchronous wheel. When the synchronous wheel rotates, the threaded shaft is driven to rotate through the fixed installation between the bottom threaded shaft. When the threaded shaft rotates, the threaded sleeve is driven to rise and fall through the threaded installation between the external threaded sleeve. When the threaded sleeve is raised and lowered, the synchronous plate is driven to rise and fall through the fixed installation between the synchronous plate. In this way, the lifting column can be driven to contact and separate with the ground, thereby switching the support form. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive work.

[0019] Figure 1 This is a schematic diagram of the appearance structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the switching structure of the utility model;

[0021] Figure 3 For this utility model Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 This is a schematic diagram of the structure of the adjustment mechanism of the utility model;

[0023] Figure 5 This is a schematic diagram of the structure of the climbing component of the utility model;

[0024] Figure 6 This is a schematic diagram of the structure of the clamping assembly of the utility model.

[0025] In the figure: 1. universal wheel; 2. switching mechanism; 3. adjustment mechanism; 31. climbing component; 32. clamping component; 21. motor 1; 22. rectangular support column; 23. bottom plate; 24. limit shaft; 25. synchronous belt; 26. synchronous plate; 27. lifting column; 28. synchronous wheel; 29. ​​threaded shaft; 210. threaded sleeve; 311. lifting pedal; 312. support plate; 313. protective fence; 314. frame; 315. inclined beam; 316. spacer; 321. lifting plate; 322. hexagonal nut; 323. fixing block; 324. bidirectional threaded rod; 325. clamping plate; 326. crossbeam; 327. turntable; 328. rectangular block 1; 329. threaded rod 2; 3210. rectangular block 2. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0028] Example 1:

[0029] See also Figure 1-6 The utility model provides a technical solution: a step ladder for loading trucks, comprising a universal wheel 1, a switching mechanism 2 is provided on the top of the universal wheel 1, and an adjusting mechanism 3 is provided on the top of the switching mechanism 2;

[0030] The adjustment mechanism 3 includes a climbing component 31 and a clamping component 32 . The climbing component 31 is arranged on the top of the switching mechanism 2 , and the clamping component 32 is arranged on the back of the climbing component 31 .

[0031] The switching mechanism 2 includes a rectangular support column 22, a bottom plate 23 is fixedly installed at the bottom of the rectangular support column 22, a lifting column 27 is slidably installed inside the bottom plate 23, a synchronous plate 26 is fixedly installed on the top of the lifting column 27, a threaded shaft 29 is rotatably installed on the top of the synchronous plate 26, a threaded sleeve 210 is installed on the external thread of the threaded shaft 29, a synchronous plate 26 is fixedly installed on the bottom of the threaded sleeve 210, a synchronous wheel 28 is fixedly installed on the top of the threaded shaft 29, a motor 21 is fixedly installed on the top of the synchronous wheel 28, a limiting shaft 24 is installed on the external transmission of the synchronous wheel 28, and a synchronous belt 25 is installed on the external transmission of the synchronous wheel 28, which can support and switch the device.

[0032] Two synchronous plates 26 are provided, and both synchronous plates 26 are fixedly installed on the top of the lifting column 27. A circular through hole is provided on the top of the base plate 23, and the lifting column 27 is slidably installed inside the circular through hole. Two threaded sleeves 210 are provided, and both threaded sleeves 210 have threaded holes. The threaded shaft 29 is threadedly installed inside the threaded hole to limit the support switching of the device.

[0033] Example 2:

[0034] See also Figure 5 , and combined with Example 1, it is further obtained that the climbing component 31 includes a spacer 316, the spacer 316 is fixedly installed on the top of the rectangular support column 22, the frame 314 is fixedly installed on the top of the spacer 316, the support plate 312 is fixedly installed on the top of the frame 314, the protective fence 313 is fixedly installed on the top of the support plate 312, the inclined beam 315 is fixedly installed on the front of the frame 314, and the lifting pedal 311 is fixedly installed on the inner side of the inclined beam 315, so as to reach the required height by climbing.

[0035] A back plate is fixedly installed on the back of the frame 314, two protective fences 313 are provided, a protective fence is fixedly installed on the top of the inclined beam 315, and six lifting pedals 311 are provided, and the six lifting pedals 311 are installed in an incremental manner to support and fix the climbing.

[0036] The clamping assembly 32 includes a lifting plate 321, which is fixedly installed on the back of the frame 314. A crossbeam 326 is slidably installed inside the lifting plate 321, and a clamping plate 325 is slidably installed inside the crossbeam 326. A fixed block 323 is fixedly installed on the top of the clamping plate 325. A rectangular block 1 328 is fixedly installed on the back of the frame 314, and a rectangular block 2 3210 is fixedly installed on the back of the frame 314. A threaded rod 2 329 is rotatably installed on the top of the rectangular block 2 3210, and a turntable 327 is fixedly installed on the top of the threaded rod 2 329. A bidirectional threaded rod 324 is rotatably installed on the inner side of the top of the crossbeam 326, and a hexagonal nut 322 is fixedly installed on the right end of the bidirectional threaded rod 324, which can connect the device to the loader.

[0037] A lifting groove is provided inside the lifting plate 321, and the beam 326 is slidably installed inside the lifting groove. A limiting slide groove is provided inside the book-searching beam 326, and the clamping plate 325 is slidably installed inside the limiting slide groove. An internal threaded through hole is provided inside the fixed block 323, and the bidirectional threaded rod 324 is threadedly installed inside the internal threaded through hole, so the placement device shakes and separates.

[0038] In actual operation, when this device is used, when the ladder needs to be moved, the motor 21 is energized. When the motor 21 is energized, the synchronous wheel 28 is driven to rotate by the fixed installation between the output end synchronous wheel 28. When the synchronous wheel 28 rotates, the threaded shaft 29 is driven to rotate by the fixed installation between the bottom threaded shaft 29. When the threaded shaft 29 rotates, the threaded sleeve 210 is driven to rise and fall by the threaded installation between the external threaded sleeve 210. When the threaded sleeve 210 is raised and lowered, the synchronous plate 26 is driven to rise and fall by the fixed installation between the synchronous plate 26. In this way, the lifting column 27 can be driven to contact and separate with the ground, thereby switching the support form.

[0039] When the device moves to a designated location, the lifting column 27 contacts the ground and drives the device to be supported, so that the device can be stably supported. After the device is stably supported, the frame 314 is brought close to the loading vehicle and placed on the side of the vehicle compartment. When it is close, the top of the ladder for people to climb up is rotated by rotating the turntable 327. When the turntable 327 is rotated, the threaded rod 2 329 is driven to rotate. When the threaded rod 2 329 rotates, the crossbeam 326 is driven to rise and fall through the threaded installation between the external crossbeam 326, so that the clamping plate 325 can be clamped with the top of the back side of the loading vehicle. This can ensure the connection between the ladder and the loading vehicle, so that when performing heavier operations, there will be no shaking, which will cause the distance between the ladder and the loading vehicle to change, etc. This will keep the ladder in a stable state to ensure the safety of people when working.

[0040] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

Claims

1. A step ladder for loading trucks, comprising universal wheels (1), characterized in that: A switching mechanism (2) is provided on the top of the universal wheel (1), and an adjusting mechanism (3) is provided on the top of the switching mechanism (2); The adjustment mechanism (3) comprises a climbing component (31) and a clamping component (32); the climbing component (31) is arranged on the top of the switching mechanism (2); and the clamping component (32) is arranged on the back of the climbing component (31).

2. A truck loading step ladder according to claim 1, characterized in that: The switching mechanism (2) comprises a rectangular support column (22), a bottom plate (23) is fixedly mounted on the bottom of the rectangular support column (22), a lifting column (27) is slidably mounted inside the bottom plate (23), a synchronous plate (26) is fixedly mounted on the top of the lifting column (27), a threaded shaft (29) is rotatably mounted on the top of the synchronous plate (26), a threaded sleeve (210) is externally threadedly mounted on the threaded shaft (29), a synchronous plate (26) is fixedly mounted on the bottom of the threaded sleeve (210), a synchronous wheel (28) is fixedly mounted on the top of the threaded shaft (29), a motor (21) is fixedly mounted on the top of the synchronous wheel (28), a limiting shaft (24) is externally mounted on the synchronous wheel (28), and a synchronous belt (25) is externally mounted on the synchronous wheel (28).

3. A truck loading step ladder according to claim 2, characterized in that: Two synchronous plates (26) are provided, and the two synchronous plates (26) are fixedly installed on the top of the lifting column (27). A circular through hole is opened on the top of the bottom plate (23), and the lifting column (27) is slidably installed inside the circular through hole. Two threaded sleeves (210) are provided, and a threaded hole is opened inside the two threaded sleeves (210), and the threaded shaft (29) is threadedly installed inside the threaded hole.

4. The truck loading step ladder according to claim 1, characterized in that: The climbing assembly (31) comprises a spacer plate (316), the spacer plate (316) being fixedly mounted on the top of a rectangular support column (22), a frame (314) being fixedly mounted on the top of the spacer plate (316), a support plate (312) being fixedly mounted on the top of the frame (314), a protective fence (313) being fixedly mounted on the top of the support plate (312), an inclined beam (315) being fixedly mounted on the front of the frame (314), and a lifting pedal (311) being fixedly mounted on the inner side of the inclined beam (315).

5. The truck loading step ladder according to claim 4, characterized in that: A back plate is fixedly installed on the back of the frame (314), two protective fences (313) are provided, a protective fence is fixedly installed on the top of the inclined beam (315), and six lifting pedals (311) are provided, and the six lifting pedals (311) are installed in an incremental manner.

6. The truck loading step ladder according to claim 1, characterized in that: The clamping assembly (32) includes a lifting plate (321), the lifting plate (321) is fixedly mounted on the back of the frame (314), a crossbeam (326) is slidably mounted inside the lifting plate (321), a clamping plate (325) is slidably mounted inside the crossbeam (326), a fixed block (323) is fixedly mounted on the top of the clamping plate (325), a rectangular block 1 (328) is fixedly mounted on the back of the frame (314), a rectangular block 2 (3210) is fixedly mounted on the back of the frame (314), a threaded rod 2 (329) is rotatably mounted on the top of the threaded rod 2 (329), a turntable (327) is fixedly mounted on the top of the threaded rod 2 (329), a bidirectional threaded rod (324) is rotatably mounted on the inner side of the top of the crossbeam (326), and a hexagonal nut (322) is fixedly mounted on the right end of the bidirectional threaded rod (324).

7. The truck loading step ladder according to claim 6, characterized in that: The lifting plate (321) is provided with a lifting slot inside, the crossbeam (326) is slidably mounted inside the lifting slot, a limiting sliding slot is provided inside the book-searching crossbeam (326), the clamping plate (325) is slidably mounted inside the limiting sliding slot, an internal threaded through hole is provided inside the fixing block (323), and the bidirectional threaded rod (324) is threadedly mounted inside the internal threaded through hole.

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