Lifting type steel trestle

Abstract

The utility model belongs to the technical field of trestles, and provides a lifting type steel trestle which comprises a supporting structure, a bridge floor layer and a lifting structure. A plurality of sets of double-output-shaft motors are controlled to synchronously rotate to enable a first bevel gear and a second bevel gear to be meshed to drive a threaded sleeve to rotate, the threaded sleeve rotates to be in threaded fit with a screw rod, and then the screw rod can be driven to drive a bridge floor layer to ascend and move; the threaded sleeve rotates reversely and is in threaded fit with the threaded rod to drive the threaded rod to drive the bridge floor layer to descend and move conveniently, so that the bridge floor height is adjusted conveniently and effortlessly according to the water level, the device is convenient to use in areas with large water level changes, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of trestle bridges, in particular to a lifting steel trestle bridge. Background Art

[0002] Steel trestles are primarily constructed of steel. They are often used as temporary transport alternatives during bridge construction or maintenance, boasting strong load-bearing capacity and excellent stability. Steel trestles are also widely used in logistics, particularly at ports and docks, for loading and unloading cargo, significantly improving logistics efficiency and capacity.

[0003] Existing steel trestles mostly include a bridge deck structure and a supporting structure. The height of the bridge deck structure is determined by the length of the supporting structure. However, the supporting structures in existing steel trestles are mostly integral or spliced. When the bridge deck height needs to be adjusted according to the water level, it is necessary to replace the supporting structures of different lengths or change the number of spliced ​​groups. Adjusting the bridge deck height according to the water level is cumbersome and laborious, and is not convenient for use in areas with large water level fluctuations, which reduces the practicality of the device. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the utility model proposes a lifting steel trestle, which is convenient and labor-saving to adjust the bridge deck height according to the water level, is easy to use in areas with large water level changes, and improves the practicality of the device.

[0005] A lifting steel trestle, comprising:

[0006] A supporting structure, wherein the supporting structure is provided in multiple groups at intervals, and the supporting structure comprises two groups of vertical columns arranged at intervals and a crossbeam connecting the top ends of the two groups of columns;

[0007] a bridge deck layer, the bridge deck layer being capable of being placed on top of the beams in the plurality of groups of the support structures; and

[0008] A lifting structure is provided on multiple groups of support structures. The lifting structure includes a screw, a double-output shaft motor and a threaded sleeve. The screw that can slide in the vertical direction is provided at both ends of the beam. The top ends of the two groups of screws are connected to the bridge deck layer, and the thread rotation directions are opposite. The threaded sleeves that are threadedly connected to the two groups of screws are rotatable at both ends of the beam. The double-output shaft motor is provided on the beam, and the output shafts at both ends are coaxially provided with a first bevel gear. The circumferential sides of the two groups of threaded sleeves are coaxially provided with a second bevel gear. The two groups of the first bevel gears are respectively meshed with the two groups of the second bevel gears.

[0009] The beneficial effects of the above-mentioned lifting steel trestle are:

[0010] By controlling the synchronous rotation of multiple sets of double-output shaft motors, the first bevel gear and the second bevel gear are engaged to drive the threaded sleeve to rotate. The rotation of the threaded sleeve cooperates with the screw thread to drive the screw to drive the bridge deck to move up. Conversely, by changing the synchronous rotation direction of multiple sets of double-output shaft motors, the threaded sleeve is rotated in the opposite direction. The reverse rotation of the threaded sleeve cooperates with the screw thread to drive the screw to drive the bridge deck to move down. It is convenient to drive the bridge deck to move up and down, so that it is convenient and labor-saving to adjust the bridge deck height according to the water level. It is easy to use in areas with large water level changes, thereby improving the practicality of the device.

[0011] In one embodiment, a mounting slot is defined on one side of the crossbeam, the dual-shaft motor is disposed within the mounting slot, the threaded sleeve is rotatably disposed within the mounting slot, and a baffle is bolted to one side of the crossbeam to seal the mounting slot opening. By defining the mounting slot and bolting the baffle to seal the mounting slot opening, the dual-shaft motor can be protected within the crossbeam, which not only improves the compactness of the device structure but also effectively protects the dual-shaft motor. Furthermore, removal of the baffle facilitates inspection and maintenance of the dual-shaft motor.

[0012] In one embodiment, a ring groove is formed on the bottom surface of the mounting groove, and a fixing ring is coaxially provided around the bottom end of the threaded sleeve, and the fixing ring is rotatably disposed in the ring groove. The cooperation between the ring groove and the fixing ring improves the rotation stability of the threaded sleeve.

[0013] In one embodiment, guide rods are vertically mounted on the top surfaces of both ends of the crossbeam, and guide seats are detachably mounted on both sides of the bridge deck, corresponding to the guide rods. The guide seats are sleeved onto the guide rods. The cooperation between the guide rods and the guide seats improves the stability of the bridge deck during lifting and lowering. The guide rods located on both sides of the bridge deck act as barriers, thereby improving the safety of traffic on the bridge deck. Furthermore, the guide seats are detachably connected to the bridge deck, facilitating the connection and disconnection of the bridge deck and the guide rods, making assembly and disassembly of the device easy.

[0014] In one embodiment, a barrier rod is vertically mounted on the guide seat and sleeved onto the guide rod. When the bridge deck is raised or lowered, the bridge deck drives the barrier rod up or down, ensuring that it can function as a barrier after the bridge deck height is adjusted, improving safety for traffic on the bridge deck. Furthermore, the barrier rod is sleeved onto the guide rod, further enhancing its strength and stability.

[0015] In one embodiment, the fence rod is covered with a rubber sleeve, which can cushion the impact on the fence rod, improve the fence rod's impact resistance, reduce the probability of damage to the fence rod, and reduce the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present invention, the following briefly introduces the drawings required for use in the specific embodiments. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0017] Figure 1 A schematic diagram of the three-dimensional structure of a lifting steel trestle provided in one embodiment of the present utility model;

[0018] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of a lifting steel trestle in another state is shown;

[0019] Figure 3 for Figure 1 An exploded view of some components of a lifting steel trestle is shown;

[0020] Figure 4 for Figure 1 The exploded view of a crossbeam in a lifting steel trestle is shown.

[0021] Reference numerals:

[0022] 10. Support structure; 101. Column; 102. Beam; 1021. Mounting groove; 1022. Baffle; 1023. Ring groove; 1024. Guide rod;

[0023] 20. Bridge deck; 201. Guide seat; 202. Guardrail; 203. Rubber sleeve;

[0024] 30. Screw; 301. Double-shaft motor; 302. First bevel gear; 303. Second bevel gear; 304. Threaded sleeve; 3041. Fixed ring. DETAILED DESCRIPTION

[0025] The following embodiments of the technical solution of the present invention are described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention and are therefore only examples and are not intended to limit the scope of protection of the present invention.

[0026] See also Figures 1 to 4 In one embodiment, a lifting steel trestle includes a supporting structure 10, a bridge deck layer 20 and a lifting structure.

[0027] Specifically, the support structure 10 is provided in multiple groups at intervals, and includes two groups of vertical and spaced columns 101 and a beam 102 connecting the top ends of the two groups of columns 101. The bridge deck 20 can be placed on the top ends of the beams 102 in the multiple groups of support structures 10. Multiple groups of support structures 10 are each provided with a lifting structure, which includes a screw 30, a double-output shaft motor 301 and a threaded sleeve 304. Screws 30 that can slide in a vertical direction are provided at both ends of the beam 102. The top ends of the two groups of screws 30 are connected to the bridge deck 20, and the thread rotation directions are opposite. Threaded sleeves 304 that are threadably connected to the two groups of screws 30 are provided at both ends of the beam 102. The double-output shaft motor 301 is provided on the beam 102, and the output shafts at both ends are coaxially provided with a first bevel gear 302. The circumferential sides of the two groups of threaded sleeves 304 are coaxially provided with a second bevel gear 303. The two groups of first bevel gears 302 are respectively engaged with the two groups of second bevel gears 303.

[0028] In the above embodiment, by controlling the synchronous rotation of multiple groups of double-output shaft motors 301, the first bevel gear 302 and the second bevel gear 303 are engaged to drive the threaded sleeve 304 to rotate. The rotation of the threaded sleeve 304 cooperates with the thread of the screw 30 to drive the screw 30 to drive the bridge deck 20 to move up. Conversely, by changing the synchronous rotation direction of multiple groups of double-output shaft motors 301, the threaded sleeve 304 is rotated in the opposite direction. The reverse rotation of the threaded sleeve 304 cooperates with the thread of the screw 30 to drive the screw 30 to drive the bridge deck 20 to move down. It is convenient to drive the bridge deck 20 to move up and down, so that it is convenient and labor-saving to adjust the bridge deck height according to the water level, and it is convenient to use in areas with large water level changes, thereby improving the practicality of the device.

[0029] See also Figure 3 、 Figure 4 In one embodiment, a mounting groove 1021 is opened on one side of the beam 102, the dual-shaft motor 301 is set in the mounting groove 1021, the threaded sleeve 304 is rotatably set in the mounting groove 1021, and a baffle 1022 that seals the opening of the mounting groove 1021 is fixed to one side of the beam 102 by bolts.

[0030] In the above embodiment, the dual-shaft motor 301 can be protected in the crossbeam 102 by opening the installation groove 1021 and fixing the baffle 1022 that seals the opening of the installation groove 1021 with bolts. This not only improves the compactness of the device structure, but also effectively protects the dual-shaft motor 301. At the same time, by removing the baffle 1022, it is also convenient to inspect and maintain the dual-shaft motor 301.

[0031] See also Figure 4In one embodiment, an annular groove 1023 is formed on the bottom surface of the mounting groove 1021, and a fixing ring 3041 is coaxially provided around the bottom end of the threaded sleeve 304. The fixing ring 3041 is rotatably disposed in the annular groove 1023. The cooperation between the annular groove 1023 and the fixing ring 3041 improves the rotational stability of the threaded sleeve 304.

[0032] See also Figure 2 、 Figure 3 In one embodiment, guide rods 1024 are vertically provided on the top surfaces of both ends of the beam 102 , and guide seats 201 are detachably provided on both sides of the bridge deck 20 corresponding to the guide rods 1024 , and the guide seats 201 are sleeved on the guide rods 1024 .

[0033] In the above embodiment, the cooperation between the guide rod 1024 and the guide seat 201 can improve the stability of the bridge deck 20 during lifting and moving, and the guide rod 1024 is located on both sides of the bridge deck 20 to play a blocking role, thereby improving the safety of passing on the bridge deck 20. At the same time, the guide seat 201 and the bridge deck 20 are detachably connected, which facilitates the connection and separation of the bridge deck 20 and the guide rod 1024, and the assembly and disassembly of the device is convenient.

[0034] In addition to the above embodiment, a vertical barrier rod 202 is provided on the guide seat 201, and the barrier rod 202 is sleeved on the guide rod 1024. When the bridge deck 20 is raised or lowered, the bridge deck 20 drives the barrier rod 202 to rise or fall, ensuring that the barrier rod 202 can play a blocking role after the height of the bridge deck 20 is adjusted, further improving the safety of passage on the bridge deck 20. In addition, the barrier rod 202 is sleeved with the guide rod 1024, further improving the strength and stability of the barrier rod 202.

[0035] On the basis of the above embodiment, further, a rubber sleeve 203 is provided on the enclosure rod 202. By providing the rubber sleeve 203, the impact received by the enclosure rod 202 can be cushioned, the impact resistance of the enclosure rod 202 can be improved, the damage probability of the enclosure rod 202 can be reduced, and the use cost can be reduced.

[0036] The specific implementation of the above-mentioned lifting steel trestle is as follows:

[0037] By controlling the synchronous rotation of multiple sets of double-output shaft motors 301, the first bevel gear 302 and the second bevel gear 303 are engaged to drive the threaded sleeve 304 to rotate. The threaded sleeve 304 rotates and cooperates with the screw 30 thread to drive the screw 30 to drive the bridge deck 20 to move up. Conversely, by changing the synchronous rotation direction of multiple sets of double-output shaft motors 301, the threaded sleeve 304 rotates in the opposite direction. The threaded sleeve 304 rotates in the opposite direction and cooperates with the screw 30 thread to drive the screw 30 to drive the bridge deck 20 to move down. It is convenient to drive the bridge deck 20 to move up and down, thereby conveniently and labor-savingly adjusting the bridge deck height according to the water level, and convenient for use in areas with large water level changes. The practicability of the device is improved. At the same time, when the bridge deck 20 is raised or lowered, the bridge deck 20 drives the enclosure rod 202 to rise or fall, ensuring that the enclosure rod 202 can play a blocking role after the height of the bridge deck 20 is adjusted, further improving the safety of passing on the bridge deck 20, and the enclosure rod 202 and the guide rod 1024 are sleeved, further improving the strength and stability of the enclosure rod 202, and by arranging a rubber sleeve 203 on the enclosure rod 202, the rubber sleeve 203 can cushion the impact of the enclosure rod 202, thereby improving the impact resistance of the enclosure rod 202, reducing the probability of damage to the enclosure rod 202, and reducing the cost of use.

[0038] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. A lifting steel trestle, characterized in that: include: A support structure (10), wherein the support structure (10) is arranged in multiple groups at intervals, and the support structure (10) comprises two groups of vertical columns (101) arranged at intervals, and a crossbeam (102) connecting the top ends of the two groups of columns (101); A bridge deck (20), the bridge deck (20) being capable of being placed on top of the beams (102) in a plurality of groups of the support structures (10); and A lifting structure, wherein the lifting structure is provided on multiple groups of the support structures (10), and the lifting structure comprises a screw (30), a double-output shaft motor (301) and a threaded sleeve (304); both ends of the beam (102) are provided with the screw (30) capable of sliding in a vertical direction; the top ends of the two groups of screws (30) are connected to the bridge deck (20), and the thread rotation directions are opposite; both ends of the beam (102) are rotatably provided with the threaded sleeve (304) threadedly connected to the two groups of screws (30); the double-output shaft motor (301) is provided on the beam (102), and the output shafts at both ends are coaxially provided with a first bevel gear (302); the circumferential sides of the two groups of threaded sleeves (304) are coaxially provided with a second bevel gear (303); the two groups of the first bevel gears (302) are respectively meshed with the two groups of the second bevel gears (303).

2. The lifting steel trestle according to claim 1, characterized in that: A mounting groove (1021) is provided on one side of the crossbeam (102), the dual-shaft motor (301) is arranged in the mounting groove (1021), the threaded sleeve (304) is rotatably arranged in the mounting groove (1021), and a baffle (1022) for sealing the opening of the mounting groove (1021) is fixed to one side of the crossbeam (102) by bolts.

3. The lifting steel trestle according to claim 2, characterized in that: The bottom surface of the mounting groove (1021) is provided with an annular groove (1023), and a fixing ring (3041) is coaxially provided on the circumferential side of the bottom end of the threaded sleeve (304), and the fixing ring (3041) is rotatably arranged in the annular groove (1023).

4. The lifting steel trestle according to claim 1, characterized in that: Guide rods (1024) are vertically provided on the top surfaces of both ends of the crossbeam (102), and guide seats (201) are detachably provided on both sides of the bridge deck (20) corresponding to the guide rods (1024), and the guide seats (201) are sleeved on the guide rods (1024).

5. The lifting steel trestle according to claim 4, characterized in that: A barrier rod (202) is vertically provided on the guide seat (201), and the barrier rod (202) is sleeved on the guide rod (1024).

6. The lifting steel trestle according to claim 5, characterized in that: The enclosure rod (202) is sleeved with a rubber sleeve (203).

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