Semi-trailer support device

Abstract

The present invention relates to the technical field of semi-trailers, and in particular to a semi-trailer supporting device, comprising a base, a supporting plate is provided above the base, a first screw is provided above the base, a threaded sleeve is provided on the outer sleeve of the first screw, the top of the threaded sleeve is fixedly connected to the supporting plate, the bottom end of the first screw is connected to the base through a first bearing, the supporting plate and the base are connected through a telescopic member, a driver matched with the first screw is provided on the base, a plurality of side plates are fixedly connected to the base, a plurality of through holes are provided on the base, a movable block is provided on one side of the side plate, a universal wheel is provided at the bottom of the movable block, the universal wheel passes through the through holes, the movable block and the side plate are connected through a sliding unit, a groove is provided on the top of the movable block, a prism is provided on one side of the side plate, the bottom end of the prism is located in the groove, and the bottom end of the prism is connected to the bottom inner wall of the groove through a compression spring; the universal wheel can be automatically raised and lowered relative to the base, thereby improving convenience.

Description

Technical Field

[0001] The invention relates to the technical field of semi-trailers, and in particular to a semi-trailer supporting device. Background Art

[0002] The semi-trailer support device is a special component for various semi-trailers. In the prior art, there is a semi-trailer support device with a publication number of CN212354061U. The support device is installed with a universal wheel for easy movement, and the support is adjusted during operation for support. During operation, the height of the support needs to be manually adjusted so that the universal wheel does not contact the ground. When the support device needs to be moved, the height of the support needs to be adjusted again so that the universal wheel contacts the ground, which is inconvenient to operate in practice. Summary of the invention

[0003] In view of this, the purpose of the present invention is to propose a semi-trailer support device to solve the problem that when working, it is necessary to manually adjust the height of the support so that the universal wheel does not contact the ground. When the support device needs to be moved, the height of the support needs to be adjusted again so that the universal wheel contacts the ground, which makes the actual operation inconvenient.

[0004] Based on the above-mentioned purpose, the present invention provides a semi-trailer supporting device, including a base, a supporting plate is provided above the base, a first screw is provided above the base, an outer sleeve of the first screw is provided with a threaded sleeve, the top of the threaded sleeve is fixedly connected to the support plate, the bottom end of the first screw is connected to the base through a first bearing, the support plate and the base are connected through a telescopic member, a driver matching the first screw is provided on the base, a plurality of side plates are fixedly connected to the base, a plurality of through holes are provided on the base, a movable block is provided on one side of the side plate, a universal wheel is provided at the bottom of the movable block, the universal wheel passes through the through hole, the movable block and the side plate are connected through a sliding unit, a groove is provided on the top of the movable block, a prism is provided on one side of the side plate, the bottom end of the prism is located in the groove, the bottom end of the prism and the bottom inner wall of the groove are connected through a compression spring, and the prism and the side plate are connected through a lifting assembly.

[0005] Optionally, the driver includes a first gear ring sleeved on the outside of the first lead screw, the first gear ring and the first lead screw are fixedly connected, a motor is provided on the top of the base, a gear is provided at the output end of the motor, and the gear is meshed with the first gear ring.

[0006] Optionally, the telescopic member includes two support rods arranged at the bottom of the support plate, the support rods and the support plate are fixedly connected, the outer sleeve of the support rod is provided with a support sleeve, and the bottom end of the support sleeve is fixedly connected to the base.

[0007] Optionally, the lifting assembly includes a first fixed plate arranged on one side of the side plate, the first fixed plate and the side plate are fixedly connected, the prism passes through the first fixed plate, a threaded groove is opened on the top of the prism, a second lead screw is arranged in the threaded groove, the second fixed plate is fixedly connected to one side of the side plate, and the top end of the second lead screw and the second fixed plate are connected through a second bearing.

[0008] Optionally, the outer sleeve of the second screw is provided with a second gear ring, the second gear ring and the second screw are fixedly connected, the outer sleeve of the first screw is provided with a fixing ring, the outer sleeve of the fixing ring is provided with a third gear ring, the third gear ring and the fixing ring are connected through a third bearing, the second gear ring and the third gear ring are meshed, and the second fixed plate and the fixing ring are connected through a connecting rod.

[0009] Optionally, two third fixed plates are fixedly connected to the bottom of the third gear ring, a pressing plate is provided on one side of the third fixed plate, a third lead screw is provided on one side of the pressing plate, the third lead screw passes through the third fixed plate, the third lead screw and the third fixed plate are connected by a threaded connection, one end of the third lead screw is connected to the pressing plate through a fourth bearing, and the pressing plate is in contact with the fixing ring.

[0010] Optionally, the sliding unit includes a slider arranged on one side of the movable block, a sliding groove is opened on one side of the side plate, the slider is located in the sliding groove, the slider and the movable block are connected by a connecting block, and the cross-sections of the slider and the sliding groove are both T-shaped structures.

[0011] The beneficial effects of the present invention are as follows: the universal wheel is arranged to facilitate the movement of the entire device. The entire device is manually driven to move so that the support plate moves to the position that needs to be supported. The design of the telescopic member allows the support plate to move smoothly in the vertical direction relative to the base. The driver drives the first lead screw to rotate, and the length of the first lead screw in the threaded sleeve is changed, thereby adjusting the height of the support plate. When the support plate contacts the position that needs to be supported, as the first lead screw continues to rotate, the first lead screw and the base move downward relative to the support plate, thereby causing the bottom end of the universal wheel to move into the through hole, and the movable block moves vertically relative to the side plate. The compression spring is in a compressed state, and the entire device is supported by the base, without the need for When using this device, similarly, the driver drives the first screw to rotate in the opposite direction, reducing the distance between the base and the support plate, and the support plate is no longer in contact with the position that needs support. Finally, the bottom end of the universal wheel extends out of the through hole, and the base moves up relative to the ground, and the entire device is supported by the universal wheel. As the use time increases, the elastic strength of the compression spring weakens, and the bottom end of the universal wheel cannot extend out of the through hole, so that the universal wheel can be automatically raised and lowered relative to the base, thereby improving convenience. Through the design of the lifting component, the height of the prism is adjusted, and the prism is moved down relative to the movable block, thereby changing the deformation degree of the compression spring, and then the movable block drives the bottom end of the universal wheel to extend out of the through hole, which is convenient for actual use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 This is one of the overall structural diagrams of an embodiment of the present invention;

[0014] Figure 2 This is the second schematic diagram of the overall structure of an embodiment of the present invention;

[0015] Figure 3 A schematic diagram of the structure of a fixing ring according to an embodiment of the present invention;

[0016] Figure 4 This is a schematic diagram of the structure of a third fixing plate according to an embodiment of the present invention;

[0017] Figure 5 This is a schematic diagram of the structure of a lifting assembly according to an embodiment of the present invention;

[0018] Figure 6 Schematic diagram of the sliding unit structure according to an embodiment of the present invention.

[0019] The markings in the figure are:

[0020] 1. Base; 2. Support plate; 3. Movable block; 4. Side plate; 5. Through hole; 6. Universal wheel; 7. Groove; 8. Prism; 9. Compression spring; 10. First fixed plate; 11. Threaded sleeve; 12. First lead screw; 13. First bearing; 14. First gear ring; 15. Motor; 16. Gear; 17. Support sleeve; 18. Support rod; 19. Threaded groove; 20. Second lead screw; 21. Second fixed plate; 22. Second bearing; 23. Second gear ring; 24. Fixed ring; 25. Connecting rod; 26. Third gear ring; 27. Third bearing; 28. Third fixed plate; 29. ​​Pressing plate; 30. Third lead screw; 31. Fourth bearing; 32. Slide groove; 33. Sliding block; 34. Connecting block. DETAILED DESCRIPTION

[0021] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0022] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0023] One or more embodiments of this specification provide a semi-trailer support device, such as Figures 1 to 6As shown, it includes a base 1, a support plate 2 is provided above the base 1, a first lead screw 12 is provided above the base 1, a threaded sleeve 11 is provided on the outer sleeve of the first lead screw 12, the top of the threaded sleeve 11 is fixedly connected to the support plate 2, the bottom end of the first lead screw 12 is connected to the base 1 through a first bearing 13, the support plate 2 and the base 1 are connected through a telescopic member, a driver matching the first lead screw 12 is provided on the base 1, a plurality of side panels 4 are fixedly connected to the base 1, a plurality of through holes 5 are provided on the base 1, a movable block 3 is provided on one side of the side panel 4, a universal wheel 6 is provided at the bottom of the movable block 3, the universal wheel 6 passes through the through hole 5, the movable block 3 and the side panel 4 are connected through a sliding unit, a groove 7 is provided on the top of the movable block 3, a prism 8 is provided on one side of the side panel 4, the bottom end of the prism 8 is located in the groove 7, the bottom end of the prism 8 and the bottom inner wall of the groove 7 are connected through a compression spring 9, the prism 8 and the side panel 4 are connected through a lifting assembly, and the universal wheel 6 is provided to facilitate driving the entire device to move, and manual driving The first screw 12 is driven by the driver to rotate, and the length of the first screw 12 located in the threaded sleeve 11 is changed, thereby adjusting the height of the support plate 2. When the support plate 2 contacts the position to be supported, as the first screw 12 continues to rotate, the first screw 12 and the base 1 move downward relative to the support plate 2, thereby making the bottom end of the universal wheel 6 move into the through hole 5, and the movable block 3 moves vertically relative to the side plate 4. The compression spring 9 is in a compressed state, and the entire device is supported by the base 1. When the device is not needed, the driver drives the first screw 12 to rotate in the opposite direction to reduce the distance between the base 1 and the support plate 2. The support plate 2 no longer contacts the position to be supported. Finally, the bottom end of the universal wheel 6 extends out of the through hole 5, and the base 1 moves up relative to the ground, and the entire device is supported by the universal wheel 6.

[0024] In some optional specific embodiments, such as Figure 1 and Figure 2 As shown, the driver includes a first gear ring 14 sleeved on the outside of the first lead screw 12, the first gear ring 14 and the first lead screw 12 are fixedly connected, a motor 15 is provided on the top of the base 1, and a gear 16 is provided at the output end of the motor 15, the gear 16 and the first gear ring 14 are meshed, and the motor 15 drives the gear 16 to rotate, and through the cooperation of the first gear ring 14 and the gear 16, the gear 16 drives the first gear ring 14 to rotate, and then drives the first lead screw 12 to rotate, thereby changing the length of the first lead screw 12 located in the threaded sleeve 11.

[0025] In some optional specific embodiments, such as Figure 2As shown, the telescopic member includes two support rods 18 arranged at the bottom of the support plate 2, the support rods 18 are fixedly connected to the support plate 2, the outer sleeve of the support rods 18 is provided with a support sleeve 17, and the bottom end of the support sleeve 17 is fixedly connected to the base 1. Through the cooperation of the support sleeve 17 and the support rods 18, the support plate 2 can move smoothly in the vertical direction relative to the base 1.

[0026] In some optional specific embodiments, such as Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the lifting assembly includes a first fixed plate 10 arranged on one side of the side plate 4, the first fixed plate 10 and the side plate 4 are fixedly connected, the prism 8 passes through the first fixed plate 10, the top of the prism 8 is provided with a threaded groove 19, and a second lead screw 20 is provided in the threaded groove 19, a second fixed plate 21 is fixedly connected to one side of the side plate 4, the top of the second lead screw 20 and the second fixed plate 21 are connected through a second bearing 22, the outer sleeve of the second lead screw 20 is provided with a second gear ring 23, the second gear ring 23 and the second lead screw 20 are fixedly connected, the outer sleeve of the first lead screw 12 is provided with a fixing ring 24, the outer sleeve of the fixing ring 24 is provided with a third gear ring 26, the third gear ring 26 and the fixing ring 24 are connected through a third bearing 27, and the second gear ring 23 and the third gear ring 26 are meshed, the second fixed plate 21 and the fixing ring 24 are connected through a connecting rod 25, and the bottom of the third gear ring 26 is fixedly connected to two third fixed plates 28, one side of the third fixed plate 28 is provided with a pressing plate 29, and one side of the pressing plate 29 A third lead screw 30 is provided on the side, and the third lead screw 30 passes through the third fixed plate 28. The connection mode of the third lead screw 30 and the third fixed plate 28 is a threaded connection. One end of the third lead screw 30 is connected to the pressing plate 29 through a fourth bearing 31. The pressing plate 29 is in contact with the fixing ring 24. By manually driving the third gear ring 26 to rotate, the plurality of second gear rings 23 rotate synchronously, thereby rotating the second lead screw 20, changing the length of the second lead screw 20 in the thread groove 19, thereby adjusting the height of the prism 8, so that the prism 8 moves downward relative to the movable block 3, changing the deformation degree of the compression spring 9, thereby causing the movable block 3 to drive the bottom end of the universal wheel 6 to extend out of the through hole 5, which is convenient for actual use. By manually driving the third lead screw 30 to rotate, the third lead screw 30 moves relative to the third fixed plate 28, thereby causing the pressing plate 29 to be in close contact with the fixing ring 24, thereby fixing the third gear ring 26 relative to the fixing ring 24, reducing the possibility of the third gear ring 26 rotating due to non-human factors.

[0027] In some optional specific embodiments, such as Figure 6As shown, the sliding unit includes a slider 33 arranged on one side of the movable block 3, a slide groove 32 is opened on one side of the side plate 4, the slider 33 is located in the slide groove 32, the slider 33 and the movable block 3 are connected by a connecting block 34, and the cross-sections of the slider 33 and the slide groove 32 are both T-shaped structures. Through the design of the sliding unit, the movable block 3 can move smoothly in the vertical direction relative to the side plate 4.

[0028] Working principle: The universal wheel 6 is provided to facilitate the movement of the entire device. The entire device is manually driven to move so that the support plate 2 moves to the position where support is required. Through the cooperation of the support sleeve 17 and the support rod 18, the support plate 2 moves smoothly in the vertical direction relative to the base 1. The motor 15 drives the gear 16 to rotate. Through the cooperation of the first gear ring 14 and the gear 16, the gear 16 drives the first gear ring 14 to rotate, thereby driving the first lead screw 12 to rotate, changing the length of the first lead screw 12 in the threaded sleeve 11, and thereby adjusting the height of the support plate 2. When the support plate 2 contacts the position where support is required, as the first lead screw 12 continues to rotate, the first lead screw 12 and the base 1 move downward relative to the support plate 2, thereby causing the bottom end of the universal wheel 6 to move into the through hole 5, and the movable block 3 moves vertically relative to the side plate 4. The compression spring 9 is in a compressed state, and the entire device is supported by the base 1. When the device is not needed, similarly, the motor 15 drives the gear 16 to rotate in the opposite direction, so that the first lead screw 12 can rotate in the opposite direction, reducing The distance between the base 1 and the support plate 2 is such that the support plate 2 is no longer in contact with the position that needs to be supported. Finally, the bottom end of the universal wheel 6 extends out of the through hole 5, and the base 1 moves up relative to the ground. The entire device is supported by the universal wheel 6. As the use time increases, the elastic strength of the compression spring 9 weakens, and the bottom end of the universal wheel 6 cannot extend out of the through hole 5. The third gear ring 26 is manually driven to rotate, so that the plurality of second gear rings 23 rotate synchronously, and then the second lead screw 20 rotates, changing the second lead screw 20 in the thread The length of the groove 19 is adjusted to adjust the height of the prism 8, so that the prism 8 moves downward relative to the movable block 3, changing the deformation degree of the compression spring 9, and then the movable block 3 drives the bottom end of the universal wheel 6 to extend out of the through hole 5, which is convenient for actual use. The third lead screw 30 is manually driven to rotate, so that the third lead screw 30 moves relative to the third fixed plate 28, and then the pressing plate 29 is tightly attached to the fixed ring 24, so that the third gear ring 26 is fixed relative to the fixed ring 24, reducing the possibility of the third gear ring 26 rotating due to non-human factors.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0030] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A semitrailer support device, comprising a base (1), characterized in that: A support plate (2) is provided above the base (1), a first lead screw (12) is provided above the base (1), a threaded sleeve (11) is provided on the outer sleeve of the first lead screw (12), the top end of the threaded sleeve (11) is fixedly connected to the support plate (2), the bottom end of the first lead screw (12) is connected to the base (1) via a first bearing (13), the support plate (2) and the base (1) are connected via a telescopic member, a driver matching the first lead screw (12) is provided on the base (1), a plurality of side plates (4) are fixedly connected to the base (1), and a plurality of side plates (4) are provided on the base (1). A plurality of through holes (5) are provided, a movable block (3) is provided on one side of the side plate (4), a universal wheel (6) is provided at the bottom of the movable block (3), the universal wheel (6) passes through the through hole (5), the movable block (3) and the side plate (4) are connected via a sliding unit, a groove (7) is provided at the top of the movable block (3), a prism (8) is provided on one side of the side plate (4), the bottom end of the prism (8) is located in the groove (7), the bottom end of the prism (8) and the bottom inner wall of the groove (7) are connected via a compression spring (9), and the prism (8) and the side plate (4) are connected via a lifting assembly; The telescopic member comprises two support rods (18) arranged at the bottom of the support plate (2), the support rods (18) and the support plate (2) are fixedly connected, the support rods (18) are externally sleeved with a support sleeve (17), and the bottom end of the support sleeve (17) is fixedly connected to the base (1); The lifting assembly comprises a first fixing plate (10) arranged on one side of the side plate (4), the first fixing plate (10) and the side plate (4) are fixedly connected, the prism (8) passes through the first fixing plate (10), a thread groove (19) is formed on the top of the prism (8), a second lead screw (20) is arranged in the thread groove (19), a second fixing plate (21) is fixedly connected to one side of the side plate (4), and the top end of the second lead screw (20) and the second fixing plate (21) are connected via a second bearing (22); The second lead screw (20) is provided with a second gear ring (23) on its outer sleeve, the second gear ring (23) and the second lead screw (20) are fixedly connected, the first lead screw (12) is provided with a fixing ring (24) on its outer sleeve, the fixing ring (24) is provided with a third gear ring (26) on its outer sleeve, the third gear ring (26) and the fixing ring (24) are connected via a third bearing (27), the second gear ring (23) and the third gear ring (26) are meshed with each other, and the second fixing plate (21) and the fixing ring (24) are connected via a connecting rod (25).

2. The semitrailer support device according to claim 1, characterized in that: The driver comprises a first gear ring (14) sleeved on the outside of the first lead screw (12), the first gear ring (14) and the first lead screw (12) being fixedly connected, a motor (15) being provided on the top of the base (1), a gear (16) being provided at the output end of the motor (15), and the gear (16) and the first gear ring (14) being meshed.

3. The semitrailer support device according to claim 1, characterized in that: The bottom of the third gear ring (26) is fixedly connected to two third fixing plates (28); a pressing plate (29) is provided on one side of the third fixing plate (28); a third lead screw (30) is provided on one side of the pressing plate (29); the third lead screw (30) passes through the third fixing plate (28); the third lead screw (30) and the third fixing plate (28) are connected in a threaded manner; one end of the third lead screw (30) and the pressing plate (29) are connected via a fourth bearing (31); and the pressing plate (29) and the fixing ring (24) are in contact.

4. The semitrailer supporting device according to claim 1, characterized in that: The sliding unit comprises a sliding block (33) arranged on one side of the movable block (3); a sliding groove (32) is provided on one side of the side plate (4); the sliding block (33) is located in the sliding groove (32); the sliding block (33) and the movable block (3) are connected via a connecting block (34); and the cross sections of the sliding block (33) and the sliding groove (32) are both T-shaped structures.

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