Telescopic crossing frame

Abstract

The invention relates to the technical field of spanning frames, and discloses a telescopic spanning frame which comprises a plurality of bases, every two adjacent bases are arranged on the two sides of a spanning object respectively, and supporting shafts are connected to the bases through angle adjusting pieces; the lifting assembly is arranged on the supporting shaft and comprises a supporting table and a lifting part, the supporting table is arranged on the supporting shaft in a sleeving mode, the lifting part is arranged on the supporting table, and the supporting table is in sliding connection with the supporting shaft through the lifting part; the telescopic assembly comprises a plurality of telescopic pieces, the telescopic pieces are arranged on the supporting tables respectively, and the two telescopic pieces on the two supporting tables located on the two sides of the same spanning object are connected in a limiting mode; and the protection assembly comprises a moving table and a protection part, the moving table moves on the two telescopic parts which are connected in a limiting mode, and the protection part is arranged on the supporting table and is unfolded through the moving table. The device is simple in structure, convenient to adjust and flexible to assemble, and the overall construction efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of crossing frames, in particular to a telescopic crossing frame. Background Art

[0002] At present, in the construction of power transmission lines, various obstacles such as crossing roads, railways, broadcasting lines, power lines, etc. are often encountered. In order to prevent the conductors from being damaged and not affect the safe operation of the objects being crossed, crossing frames must be set up at these crossings before laying the lines to allow the conductors to pass safely and smoothly.

[0003] On the one hand, the construction workers splice bamboo poles together and then fasten them for the spanning frame built on site. This method is time-consuming, labor-intensive, and material-consuming, and the firmness is also a major problem, which has a great impact on the later stage and is highly dangerous. On the other hand, the movable and adjustable spanning frame is mostly an integral structure, which can usually only be built and placed for a single spanning object. For the construction of multiple spanning objects, it needs to be built and adjusted repeatedly, and the overall construction efficiency is low. In addition, the spanning frame in the prior art usually does not have a protective function and cannot guarantee the safety of the construction workers.

[0004] Therefore, a telescopic spanning frame is urgently needed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a telescopic spanning frame to solve the problems existing in the above-mentioned prior art.

[0006] To achieve the above object, the present invention provides the following solution: The present invention provides a telescopic spanning frame, comprising:

[0007] A plurality of bases, wherein two adjacent bases are respectively arranged on both sides of the spanning object, and the bases are connected with support shafts through angle adjustment members;

[0008] A lifting assembly is arranged on the support shaft, the lifting assembly comprises a support platform and a lifting member, the support platform is sleeved on the support shaft, the lifting member is arranged on the support platform, and the support platform is slidably connected with the support shaft through the lifting member;

[0009] The telescopic assembly comprises a plurality of telescopic parts, wherein the plurality of telescopic parts are respectively arranged on a plurality of support platforms, and two telescopic parts on two support platforms on both sides of the same spanning object are limitedly connected;

[0010] The protection component comprises a moving platform and a protection member, wherein the moving platform moves on the two telescopic members connected in a limiting manner, the protection member is arranged on the supporting platform, and the protection member is unfolded through the moving platform.

[0011] Preferably, the angle adjustment member includes an adjustment seat fixedly connected to the top of the base, an adjustment platform is slidably connected to the adjustment seat, the support shaft is arranged on the adjustment platform, a half worm gear is fixedly connected in the adjustment seat, a first worm is rotatably connected to the bottom end of the adjustment platform, the first worm is meshed with the half worm gear, a first motor is fixedly connected in the adjustment platform, and the output end of the first worm is fixedly connected to the output shaft of the first motor.

[0012] Preferably, the support shaft is rotatably connected to the adjustment platform via a connecting shaft, one end of the connecting shaft extends into the adjustment platform and is fixedly connected to a first gear, a second motor is fixedly connected to the base, a second gear is fixedly connected to the output shaft of the second motor, and the first gear is meshed with the second gear.

[0013] Preferably, the lifting member includes two rotating shafts rotatably connected to the support platform, the two rotating shafts are vertically arranged, and a second worm and a worm wheel are fixedly connected to the two rotating shafts respectively, the second worm and the worm wheel are meshed, a vertical plate is fixedly connected to the support shaft, a tooth groove is opened on the vertical plate, the worm wheel is meshed with the tooth groove, a third motor is fixedly connected to the support platform, and one end of the rotating shaft connected to the second worm is fixedly connected to the output shaft of the third motor.

[0014] Preferably, a plurality of limit slots are axially provided on one side of the support shaft away from the vertical plate, a cylinder is fixedly connected to the support platform, a limit rod is fixedly connected to the telescopic end of the cylinder, and the limit rod is adapted to the limit slot.

[0015] Preferably, the telescopic member includes a support plate hinged at one end on the support platform, a groove is provided at the other end of the support plate, the telescopic plate is slidably connected in the groove via a first electric telescopic rod, a second electric telescopic rod is arranged between the support plate and the support platform, and both ends of the second electric telescopic rod are respectively hinged to the support platform and the support plate.

[0016] Preferably, plug-in blocks and plug-in slots are respectively provided at both ends of the telescopic plate, and the plug-in blocks and the plug-in slots on the two telescopic plates are adapted to each other.

[0017] Preferably, a snap-on buckle is fixedly connected to the plug-in block, a snap-on slot is provided on the plug-in slot, a snap-on rod is fixedly connected in the snap-on slot, the snap-on buckle extends into the snap-on slot in the corresponding plug-in slot, and is limit-connected to the snap-on rod.

[0018] Preferably, the snap-fit ​​buckle is a C-shaped elastic metal snap-fit ​​buckle, and protrusions are fixedly connected to the outer sides of both ends of the snap-fit ​​buckle, and two pits are opened on the inner wall of the snap-fit ​​groove, and the protrusions are matched with the pits.

[0019] Preferably, slide rails are provided on both sides of the support plate and the telescopic plate, and the movable platform moves on the slide rails. The protective member includes two boxes fixedly connected to both sides of the support platform, a winding roller is rotatably connected in the box, one end of the protective net is fixedly connected to the winding roller, and a long hole is opened on the box, and the other end of the protective net extends out of the long hole and is fixedly connected to the movable platform.

[0020] Compared with the prior art, the present invention has the following advantages and technical effects:

[0021] 1. The present invention provides a telescopic spanning frame, which can select two bases to be placed on both sides of the spanning object, and adjust the angle of the support platform on the base through the provided angle adjustment member, and adjust the height of the support platform through the lifting member, so that the telescopic members on the two support platforms on both sides correspond to each other, and the connection of the devices on both sides is achieved by connecting the two telescopic members. At the same time, after the telescopic members are connected, the top is protected by unfolding the protective member to protect the safety of the construction workers.

[0022] 2. The telescopic spanning frame provided by the present invention can select several bases for placement in the case of several spanning objects, and adjust one of the support platforms to the corresponding positions of several adjacent support platforms through the rotation of the support platform, and connect the telescopic parts for construction, thereby improving the overall use range of the device. The present application has a simple structure, convenient adjustment, flexible assembly, and improves the overall construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative labor:

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the internal structure of the adjustment platform of the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the telescopic member of the present invention;

[0027] Figure 4 It is a schematic diagram of the internal structure of the box body of the present invention;

[0028] Figure 5 This is a schematic diagram of the snap-fit ​​buckle structure of the present invention;

[0029] Among them, 1. base; 2. support shaft; 3. support platform; 4. moving platform; 5. universal wheel; 6. adjustment seat; 7. adjustment platform; 8. half worm gear; 9. first worm; 10. connecting shaft; 11. first gear; 12. second gear; 13. rotating shaft; 14. second worm; 15. worm gear; 16. vertical plate; 17. support plate; 18. groove; 19. first electric telescopic rod; 20. telescopic plate; 21. second electric telescopic rod; 22. plug-in block; 23. plug-in slot; 24. box; 25. winding roller; 26. protective net; 27. long hole; 28. limit slot; 29. ​​cylinder; 30. limit plug rod; 31. snap buckle; 32. snap slot; 33. snap rod; 34. protrusion; 35. pit. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] Reference Figure 1-Figure 5 The present invention provides a telescopic spanning frame, comprising:

[0033] A plurality of bases 1, two adjacent bases 1 are respectively arranged on both sides of the spanning object, and a support shaft 2 is connected to the base 1 through an angle adjustment member;

[0034] A lifting assembly is arranged on the support shaft 2. The lifting assembly includes a support platform 3 and a lifting member. The support platform 3 is sleeved on the support shaft 2. The lifting member is arranged on the support platform 3. The support platform 3 is slidably connected to the support shaft 2 through the lifting member.

[0035] The telescopic assembly includes a plurality of telescopic parts, wherein the plurality of telescopic parts are respectively arranged on a plurality of support platforms 3, and two telescopic parts on two support platforms 3 on both sides of the same spanning object are limitedly connected;

[0036] The protection component includes a moving platform 4 and a protection member. The moving platform 4 moves on two telescopic members that are limitedly connected. The protection member is arranged on the supporting platform 3 and is unfolded through the moving platform 4 .

[0037] As a further optimization scheme, a plurality of universal wheels 5 are installed at the bottom end of the base 1 to facilitate the overall movement of the device.

[0038] A further optimized solution is that the angle adjustment member includes an adjustment seat 6 fixedly connected to the top of the base 1, an adjustment platform 7 is slidably connected to the adjustment seat 6, the support shaft 2 is arranged on the adjustment platform 7, a half worm gear 8 is fixedly connected to the adjustment seat 6, a first worm 9 is rotatably connected to the bottom end of the adjustment platform 7, the first worm 9 is meshed with the half worm gear 8, a first motor is fixedly connected to the adjustment platform 7, and the output end of the first worm 9 is fixedly connected to the output shaft of the first motor.

[0039] Reference Figure 2 By setting a first motor to drive the corresponding first worm 9 to rotate, the first worm 9 drives the adjustment platform 7 to slide on the adjustment seat 6 when rotating, so as to achieve the adjustment of the angle of the adjustment platform 7.

[0040] The specific adjustment seat 6 is also provided with a scale for observing the adjustment angle.

[0041] A further optimized solution is that the support shaft 2 is rotatably connected to the adjusting platform 7 through the connecting shaft 10, one end of the connecting shaft 10 extends into the adjusting platform 7 and is fixedly connected to a first gear 11, a second motor is fixedly connected to the base 1, and a second gear 12 is fixedly connected to the output shaft of the second motor, and the first gear 11 is meshed with the second gear 12.

[0042] The second motor is provided to drive the second gear 12 to rotate, and the second gear 12 drives the first gear 11 to rotate, so as to realize the rotation of the support shaft 2, thereby realizing the steering of the support platform 3. For the situation of several spanning objects, it is convenient to set up and improve the overall construction efficiency.

[0043] A further optimized solution is that the lifting member includes two rotating shafts 13 rotatably connected to the support platform 3, the two rotating shafts 13 are vertically arranged, and the second worm 14 and the worm wheel 15 are respectively fixedly connected to the two rotating shafts 13, the second worm 14 and the worm wheel 15 are meshed, a vertical plate 16 is fixedly connected to the support shaft 2, the vertical plate 16 is provided with a tooth groove, the worm wheel 15 is meshed with the tooth groove, and a third motor is fixedly connected to the support platform 3, and one end of the rotating shaft 13 connected to the second worm 14 is fixedly connected to the output shaft of the third motor.

[0044] Reference Figure 2 When the correspondingly connected second worm 14 is driven to rotate by the third motor, the second worm 14 drives the worm wheel 15 to rotate. When the worm wheel 15 rotates, it drives the support platform 3 to move vertically on the support shaft 2, thereby realizing the adjustment of the height of the support platform 3.

[0045] To further optimize the solution, a plurality of limit slots 28 are axially opened on the side of the support shaft 2 away from the vertical plate 16, and a cylinder 29 is fixedly connected to the support platform 3. The telescopic end of the cylinder 29 is fixedly connected to a limit rod 30, and the limit rod 30 is adapted to the limit slot 28.

[0046] The limit rod 30 is driven by the provided cylinder 29 to extend into the limit slot 28 to ensure the stability of the support platform 3 after the height is adjusted.

[0047] A further optimized solution is that the telescopic member includes a support plate 17 whose one end is hinged on the support platform 3, and a groove 18 is provided at the other end of the support plate 17. A telescopic plate 20 is slidably connected in the groove 18 through a first electric telescopic rod 19. A second electric telescopic rod 21 is arranged between the support plate 17 and the support platform 3, and both ends of the second electric telescopic rod 21 are respectively hinged to the support platform 3 and the support plate 17.

[0048] The extension and retraction of the telescopic plate 20 is controlled by the first electric telescopic rod 19 , and the retraction and unfolding of the support plate 17 is controlled by the second electric telescopic rod 21 .

[0049] According to a further optimized solution, plug-in blocks 22 and plug-in slots 23 are respectively provided at both ends of the telescopic plate 20 , and the plug-in blocks 22 and plug-in slots 23 on the two telescopic plates 20 are adapted to each other.

[0050] The plug-in block 22 is correspondingly plugged into the plug-in slot 23 to improve the force bearing capacity of the connection between the two telescopic plates 20 and ensure the stability of the connection point after the two telescopic plates 20 are butt-jointed.

[0051] To further optimize the solution, a snap-fit ​​buckle 31 is fixedly connected to the plug-in block 22, a snap-fit ​​groove 32 is provided on the plug-in groove 23, a snap-fit ​​rod 33 is fixedly connected in the snap-fit ​​groove 32, the snap-fit ​​buckle 31 extends into the snap-fit ​​groove 32 in the corresponding plug-in groove 23, and is limitedly connected to the snap-fit ​​rod 33.

[0052] The provided snap-fit ​​buckle 31 is connected to the snap-fit ​​rod 33 , thereby further ensuring a stable connection between the plug-in block 22 and the plug-in slot 23 .

[0053] According to a further optimized solution, the snap buckle 31 is a C-shaped elastic metal snap buckle, and protrusions 34 are fixedly connected to the outer sides of both ends of the snap buckle 31. Two pits 35 are opened on the inner wall of the snap groove 32, and the protrusions 34 are matched with the pits 35.

[0054] Reference Figure 5 The C-shaped structure snap-fit ​​buckle 31 has elastic deformation characteristics. The connection is that the snap-fit ​​buckle 31 is squeezed by the snap-fit ​​rod 33 to drive the protrusions 34 on both sides to extend into the pit 35, so that the protrusions 34 contact the pit 35. For the middle connection point, under the action of the gravity of the heavy object above or its own gravity, the two protrusions 34 apply a force to the pit 35, further ensuring the stability of the two telescopic plates 20 after connection, and improving the overall bearing capacity.

[0055] A further optimized solution is that slide rails are provided on both sides of the support plate 17 and the telescopic plate 20, and the movable platform 4 moves on the slide rails. The protective part includes two boxes 24 fixedly connected to both sides of the support platform 3, and a winding roller 25 is rotatably connected in the box 24. One end of the protective net 26 is fixedly connected to the winding roller 25. A long hole 27 is opened on the box 24, and the other end of the protective net 26 extends out of the long hole 27 and is fixedly connected to the movable platform 4.

[0056] Reference Figure 4 The winding roller 25 is controlled to rotate by a separate motor, and the protective net 26 is driven to unfold when the movable platform 4 moves on the support plate 17 and the telescopic plate 20. Later, the movable platforms 4 corresponding to the two sides can be connected by bolts and other structures, so that the protective net 26 can be unfolded and its stability after unfolding can be ensured. Conversely, the protective net 26 can be rolled up by the winding roller 25.

[0057] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0058] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A telescopic spanning frame, characterized in that: include: A plurality of bases (1), wherein two adjacent bases (1) are respectively arranged on both sides of the spanning object, and a support shaft (2) is connected to the base (1) via an angle adjustment member; A lifting component is arranged on the support shaft (2), the lifting component comprises a support platform (3) and a lifting member, the support platform (3) is sleeved on the support shaft (2), the lifting member is arranged on the support platform (3), and the support platform (3) is slidably connected to the support shaft (2) via the lifting member; The telescopic assembly comprises a plurality of telescopic parts, wherein the plurality of telescopic parts are respectively arranged on a plurality of support platforms (3), and two of the telescopic parts on two support platforms (3) located on both sides of the same spanning object are limit-connected; The protection component comprises a moving platform (4) and a protection member, wherein the moving platform (4) moves on two telescopic members that are limit-connected, and the protection member is arranged on the supporting platform (3), and the protection member is unfolded through the moving platform (4).

2. A telescopic spanning frame according to claim 1, characterized in that: The angle adjustment member comprises an adjustment seat (6) fixedly connected to the top of the base (1); an adjustment platform (7) is slidably connected to the adjustment seat (6); the support shaft (2) is arranged on the adjustment platform (7); a half worm gear (8) is fixedly connected inside the adjustment seat (6); a first worm (9) is rotatably connected to the bottom end of the adjustment platform (7); the first worm gear (9) is meshed with the half worm gear (8); a first motor is fixedly connected inside the adjustment platform (7); and an output end of the first worm gear (9) is fixedly connected to an output shaft of the first motor.

3. A telescopic spanning frame according to claim 2, characterized in that: The support shaft (2) is rotatably connected to the adjustment platform (7) via a connecting shaft (10); one end of the connecting shaft (10) extends into the adjustment platform (7) and is fixedly connected to a first gear (11); a second motor is fixedly connected to the base (1); a second gear (12) is fixedly connected to the output shaft of the second motor; the first gear (11) is meshed with the second gear (12).

4. The telescopic spanning frame according to claim 3, characterized in that: The lifting member comprises two rotating shafts (13) rotatably connected to the support platform (3), the two rotating shafts (13) are vertically arranged, and the two rotating shafts (13) are respectively fixedly connected with a second worm (14) and a worm wheel (15), the second worm (14) and the worm wheel (15) are meshed, a vertical plate (16) is fixedly connected to the support shaft (2), a tooth groove is provided on the vertical plate (16), and the worm wheel (15) is meshed with the tooth groove, a third motor is fixedly connected to the support platform (3), and one end of the rotating shaft (13) connected with the second worm (14) is fixedly connected to the output shaft of the third motor.

5. The telescopic spanning frame according to claim 4, characterized in that: A plurality of limit slots (28) are axially provided on a side of the support shaft (2) away from the vertical plate (16); a cylinder (29) is fixedly connected to the support platform (3); a limit rod (30) is fixedly connected to the telescopic end of the cylinder (29); and the limit rod (30) is adapted to fit the limit slot (28).

6. The telescopic spanning frame according to claim 1, characterized in that: The telescopic member comprises a support plate (17) with one end hinged on the support platform (3); a groove (18) is provided at the other end of the support plate (17); a telescopic plate (20) is slidably connected in the groove (18) via a first electric telescopic rod (19); a second electric telescopic rod (21) is provided between the support plate (17) and the support platform (3); two ends of the second electric telescopic rod (21) are respectively hinged to the support platform (3) and the support plate (17).

7. The telescopic spanning frame according to claim 6, characterized in that: The two ends of the telescopic plate (20) are respectively provided with a plug-in block (22) and a plug-in slot (23), and the plug-in block (22) and the plug-in slot (23) on the two telescopic plates (20) are adapted to each other.

8. The telescopic spanning frame according to claim 7, characterized in that: A snap-fit ​​buckle (31) is fixedly connected to the plug-in block (22), a snap-fit ​​groove (32) is provided in the plug-in groove (23), a snap-fit ​​rod (33) is fixedly connected in the snap-fit ​​groove (32), the snap-fit ​​buckle (31) extends into the snap-fit ​​groove (32) corresponding to the plug-in groove (23), and is position-limitingly connected to the snap-fit ​​rod (33).

9. The telescopic spanning frame according to claim 8, characterized in that: The snap-fit ​​buckle (31) is a C-shaped elastic metal snap-fit ​​buckle. Both ends of the snap-fit ​​buckle (31) are fixedly connected to the outer sides with protrusions (34). The inner wall of the snap-fit ​​groove (32) is provided with two recesses (35), and the protrusions (34) are matched with the recesses (35).

10. The telescopic spanning frame according to claim 6, characterized in that: Slide rails are arranged on both sides of the support plate (17) and the telescopic plate (20), and the movable platform (4) moves on the slide rails. The protective member comprises two boxes (24) fixedly connected to both sides of the support platform (3), a winding roller (25) is rotatably connected inside the box (24), one end of a protective net (26) is fixedly connected to the winding roller (25), a long hole (27) is opened on the box (24), and the other end of the protective net (26) extends out of the long hole (27) and is fixedly connected to the movable platform (4).

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