A protective fence hoisting jig

Abstract

The present application belongs to the technical field of hoisting of protective fences, and solves the problems of poor hoisting stability and low efficiency of the prior art. The present application provides a hoisting jig for protective fences, comprising: a suspension wheel connectable with a crane; a sling suspended on the suspension wheel; a high-position hanger connected with the higher end of the sling; a low-position hanger arranged on one side of the high-position hanger; a connecting assembly rotatably connecting the high-position hanger and the low-position hanger and connecting the lower end of the sling with the low-position hanger; the height of the high-position hanger is greater than the height of the low-position hanger; the connecting assembly enables the high-position hanger and the low-position hanger to have a hoisting state of being locked back-to-back and a docking state of being distributed front-to-back in the length direction of the protective fence. The device improves the hoisting stability and construction efficiency of the protective fence by simultaneously hoisting two protective fences and assisting in docking.

Description

Technical Field

[0001] This invention relates to the field of protective fence hoisting technology, specifically to a protective fence hoisting fixture. Background Technology

[0002] During the installation of concrete guardrails, the base, posts, and protective fences are all installed using hoisting. Since there are various styles of protective fences, commonly solid plate-shaped and grid-shaped structures, the current use of diamond-shaped self-tightening clamps for hoisting operations suffers from reduced clamping surface due to the grid-shaped structure. This negatively impacts the safety, efficiency, and overall installation efficiency of the hoisting operation. This is especially true when two protective fences need to be installed in adjacent posts, as the connection between the two fences also requires hoisting. Therefore, to improve the safety, efficiency, and overall installation efficiency of the hoisting operation of protective fences, there is an urgent need for a hoisting fixture capable of quickly hoisting and connecting grid-shaped concrete protective fences. Summary of the Invention

[0003] In order to solve the above-mentioned technical problems, or at least partially solve the technical problems of low safety, low hoisting efficiency and low installation efficiency in the current technology of protective fence hoisting operation, this disclosure provides a protective fence hoisting jig with the function of hoisting two protective fences and achieving precise docking of the two protective fences.

[0004] To achieve the aforementioned objectives, the present invention provides a protective fence hoisting fixture, comprising: a suspension wheel capable of being connected to a crane; a sling suspended on the suspension wheel; a high-level hanger connected to the higher end of the sling and supported on the lower surface of the top beam of the protective fence by being inserted into a slot in the protective fence; a low-level hanger disposed on one side of the high-level hanger and supported on the lower surface of the top beam of the protective fence by being inserted into a slot in another protective fence; a connecting assembly rotatably connecting the high-level hanger and the low-level hanger and connecting the lower end of the sling to the low-level hanger; the height of the high-level hanger is greater than the height of the low-level hanger; the connecting assembly enables the high-level hanger and the low-level hanger to be locked in a back-to-back hoisting state and in a docking state distributed front-to-back along the length of the protective fence;

[0005] The high-level suspension frame includes a high-level crossbeam and a high-level boom, with a high-level boom fixedly installed at both ends of the high-level crossbeam; the low-level suspension frame includes a low-level crossbeam and a low-level boom, with a low-level boom fixedly installed at both ends of the low-level crossbeam; the connecting assembly is disposed between the high-level boom and the low-level boom; and the higher end of the sling is connected to the top of the high-level boom.

[0006] The high-level gantry also includes a high-level telescopic arm that can be vertically installed in the high-level boom, and the low-level gantry also includes a low-level telescopic arm that can be vertically installed in the low-level boom. The connecting assembly is disposed between the high-level boom and the low-level telescopic arm, and the higher end of the sling is connected to the top of the high-level telescopic arm. The high-level boom and the low-level boom are fixedly connected.

[0007] Both the high-position telescopic boom and the low-position telescopic boom are connected to cable at their bottom ends. Both the high-position boom and the low-position boom have slidably installed clamps that are fixedly connected to the cable on their transverse sections. Both the high-position boom and the low-position boom have stop blocks installed on their transverse sections that abut against the side of the clamps facing the cable. When the high-position boom and the low-position boom are supported on the lower surface of the top beam of the protective fence, the top beam of the protective fence presses down on the stop blocks, causing the stop blocks to detach from the clamps.

[0008] Optionally, the connecting assembly includes a connecting shaft, a connecting plate, a slot, and a locking block. The connecting shaft is vertically fixed to one end of the lower-positioned hanger. The connecting plate is slidably fitted onto the upper-positioned hanger in the height direction, and the connecting plate is located above the lower-positioned hanger. The lower end of the sling is fixedly connected to the connecting plate. The slot is located on the bottom of the connecting plate facing the lower-positioned hanger. The locking block is fixedly located at the top of the lower-positioned hanger, and the slot is fitted onto the locking block. When the upper-positioned hanger and the lower-positioned hanger switch from the hoisting state to the docking state, the slot disengages from the locking block.

[0009] Optionally, the connecting assembly further includes a locking rod, which is rotatably mounted on the connecting plate. The locking rod includes a locking end that contacts the side of the lower-position hanger away from the higher-position hanger, a mounting part that rotatably passes through the connecting plate, and a trigger end that is pushed up by the higher-position hanger and abuts against the side of the higher-position hanger. When the locking end contacts the side of the lower-position hanger away from the higher-position hanger, the higher-position hanger and the lower-position hanger are locked in the hoisting state. After the trigger end disengages from the higher-position hanger, the locking rod rotates under its own weight, causing the trigger end to separate from the lower-position hanger.

[0010] Optionally, the connecting assembly further includes a sliding sleeve fixedly installed at the bottom of the connecting plate. The end of the sliding sleeve facing the high-position hanger is slidably fitted onto the high-position hanger, and the side of the sliding sleeve facing the low-position hanger is set in an open state. The slot is set at the top of the side of the sliding sleeve facing the low-position hanger.

[0011] Optionally, a transverse spring is provided in the transverse section of both the high-position boom and the low-position boom. The end of the transverse spring facing the clamp is connected to the clamp, which is used to keep the clamp at the farthest distance from the vertical section of the high-position boom and the low-position boom in the initial state.

[0012] Optionally, vertical springs are provided on the sides of the transverse sections of both the high-position boom and the low-position boom, and the top of the vertical springs is connected to the stop block.

[0013] Preferably, both the high-position boom and the low-position boom are provided with through grooves in their transverse sections, and wheel grooves are provided on both sides of the through grooves. A slider is fixedly installed at the bottom of the clamping plate, and a pair of rollers that roll in the wheel grooves are provided on both sides of the slider.

[0014] Optionally, one suspension wheel and one sling are provided on each side of the protective fence along its length, and the two suspension wheels are connected by a suspension beam, which in turn connects to the crane.

[0015] The technical solution provided in this disclosure has the following advantages compared with the prior art:

[0016] 1. The coordination of the high-level hanger, low-level hanger, and connecting components enables the balanced, stable, and safe hoisting of two protective fences in one go during hoisting, effectively improving hoisting stability and efficiency. When docking the two protective fences, after the protective fence on the low-level hanger is lowered onto the base, the high-level hanger and low-level hanger are directly adjusted to the docking position, so that the protective fence on the high-level hanger automatically aligns with the protective fence on the low-level hanger in the length direction, greatly improving the docking and installation efficiency of the protective fences.

[0017] 2. The connection components are designed so that when docking protective fences, the reaction force of the protective fence already placed on the base on the lower hanger can stabilize the rotation center of the protective fence to be docked on the upper hanger through the hoisting fixture, thereby improving docking accuracy and facilitating operation. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the protective fence hoisting fixture of the present invention when hoisting two protective fences;

[0020] Figure 2 This is the present invention. Figure 1 A schematic diagram of the hoisting fixture for the central protective fence;

[0021] Figure 3 This is the present invention. Figure 2 A partial schematic diagram of the hoisting fixture for the central protective fence;

[0022] Figure 4 This is the present invention. Figure 2 Another perspective view of the hoisting fixture for the protective fence;

[0023] Figure 5 This is a schematic diagram of the structure of the connecting plate, sliding sleeve, and locking rod of the present invention;

[0024] Figure 6 This is a schematic diagram showing the cut-open high-position boom and low-position boom of one side of the protective fence hoisting fixture of the present invention.

[0025] The components are as follows: 1. Suspension wheel; 2. Lifting cable; 3. High-position hanger; 301. High-position crossbeam; 302. High-position boom; 303. High-position telescopic boom; 4. Low-position hanger; 401. Low-position crossbeam; 402. Low-position boom; 403. Low-position telescopic boom; 5. Connecting shaft; 6. Connecting plate; 7. Slot; 8. Locking block; 9. Locking rod; 901. Locking end; 902. Mounting part; 903. Triggering end; 10. Sliding sleeve; 11. Cable; 12. Clamping plate; 13. Stop block; 14. Horizontal spring; 15. Vertical spring; 16. Through groove; 17. Wheel groove; 18. Slider; 19. Roller; 20. Suspension beam; 21. Guide wheel. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should fall within the scope of the technical content disclosed in the present invention. It should be noted that in this specification, relational terms such as "first" and "second" are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0028] like Figure 1 As shown, the protective fence hoisting fixture disclosed in this embodiment includes:

[0029] The suspension wheel 1, which can be connected to the crane, has a lifting ring installed on its frame, which is then connected to the crane's hook. The sling 2, which can be made of steel wire rope, is suspended from the suspension wheel 1.

[0030] A high-level hanger 3 is connected to the higher end of the sling 2 and is inserted into the strip-shaped hole of the protective fence to support the lower surface of the top crossbeam of the protective fence. The protective fence includes a top crossbeam, a bottom crossbeam, and a longitudinal beam integrally cast between the top and bottom crossbeams. Two adjacent longitudinal beams, together with the top and bottom crossbeams, form a strip-shaped hole. The high-level hanger 3 is inserted into the strip-shaped hole, and the high-level hanger 3 lifts the protective fence by supporting the top crossbeam.

[0031] A low-level hanger 4 is installed on one side of the high-level hanger 3 and is supported on the lower surface of the top beam of another protective fence by being inserted into a slot in the top beam of the fence. The low-level hanger 4 is inserted into the slot, and by supporting the top beam, it lifts the other protective fence.

[0032] Therefore, by setting up a high-level sling 3 and a low-level sling 4 at both ends of the sling 2, the hoisting operations of the two protective fences can be carried out simultaneously. First, it can improve the hoisting efficiency of the protective fences. Second, since the weights of the two protective fences are roughly the same, they can be effectively balanced during hoisting, ensuring the stability and safety of the hoisting.

[0033] The height of the high-level scaffold 3 is greater than the height of the low-level scaffold 4. In actual operation, due to the significant weight of the concrete fence, manual movement is laborious, and the storage position and distance between the two protective fences are highly random. Therefore, to facilitate the installation of the two protective fences onto the lifting fixture, the following method can be used:

[0034] First, the high-level gantry 3 lifts the No. 1 protective fence. At this time, the bottom of the No. 1 protective fence is far from the ground. When the low-level gantry 4 is inserted into the strip hole of the No. 2 protective fence, the bottom of the No. 1 protective fence will not collide with the ground and cause interference. This makes it easy to install the two protective fences onto the hoisting fixture.

[0035] The protective fence hoisting fixture disclosed in this embodiment further includes: a connecting component that rotatably connects the high-position hanger 3 and the low-position hanger 4 and connects the lower end of the sling 2 to the low-position hanger 4; the connecting component enables the high-position hanger 3 and the low-position hanger 4 to be locked in a back-to-back hoisting state and to be docked in a front-to-back distribution along the length of the protective fence.

[0036] During the hoisting of the two protective fences, the connecting assembly locks the high-position hanger 3 and the low-position hanger 4 in a back-to-back position. At this time, the two protective fences are symmetrically distributed on both sides of the suspension wheel 1 to ensure the balance, stability and safety of the hoisting.

[0037] When installing the protective fence onto the base and posts, follow these steps:

[0038] First, place the No. 2 protective fence on the low-level hanger 4 onto the base, and then align the No. 2 protective fence with the column by operating the crane. Then, pre-connect the No. 2 fence, the base, and the column. At this time, the bottom height of the No. 1 fence on the high-level hanger 3 is still greater than the height of the base.

[0039] Then, the high-level hanger 3 and the low-level hanger 4 are unlocked through the connecting components. At this time, the No. 2 protective fence can stably lift the fixture, so that during the rotation of the high-level hanger 3, the rotation center of the high-level hanger 3 can be relatively stable within a controllable range. When the high-level hanger 3 rotates, the No. 1 protective fence moves to the rear of the No. 2 protective fence in the length direction. At this time, the No. 1 and No. 2 protective fences are on the same plane in the length direction, but the height of the No. 1 protective fence is greater than that of the No. 2 protective fence in the height direction. Therefore, it is only necessary to operate the crane to lower the No. 1 protective fence directly onto the base.

[0040] Firstly, the tension of the sling 2 is directly applied to the high-level gantry 3, making the high-level gantry 3 a stable lifting platform. The connecting component applies the tension of the sling 2 to the low-level gantry 4, making the low-level gantry 4 another stable lifting platform. This allows for the simultaneous lifting of two protective fences, improving the lifting efficiency of the protective fences.

[0041] Secondly, when hoisting two protective fences, the connecting assembly locks the high-position hanger 3 and the low-position hanger 4 in a back-to-back state, thereby improving the balance, stability and safety of the hoisting.

[0042] Thirdly, the connecting components enable the high-position hanger 3 to rotate relative to the low-position hanger 4, allowing the two protective fences to switch to a state where they are distributed front and back along the length of the protective fence, so as to connect and align the two protective fences along the length of the base, thereby improving the installation efficiency of the protective fences.

[0043] Fourthly, during the process of lowering the No. 1 protective fence onto the base, the No. 2 protective fence is restricted to the top of the low-position hanger 4, preventing the low-position hanger 4 from moving upward. At this time, the No. 2 protective fence can serve as a stable fulcrum when the high-position hanger 3 is lowered.

[0044] like Figure 2 , Figure 3 and Figure 5As shown, the connecting assembly includes a connecting shaft 5, a connecting plate 6, a slot 7, and a locking block 8. The connecting shaft 5 is vertically fixed to one end of the lower-position hanger 4. The connecting plate 6 is slidably fitted onto the upper-position hanger 3 in the height direction, and the connecting plate 6 is located above the lower-position hanger 4. The lower end of the sling 2 is fixedly connected to the connecting plate 6. The slot 7 is located on the bottom of the connecting plate 6 facing the lower-position hanger 4. The locking block 8 is fixedly located at the top of the lower-position hanger 4, and the slot 7 is fitted onto the locking block 8. When the upper-position hanger 3 and the lower-position hanger 4 switch from the hoisting state to the docking state, the slot 7 disengages from the locking block 8.

[0045] The connecting shaft 5 can be adapted to the position of one end of the protective fence to ensure that when the high-position hanger 3 and the low-position hanger 4 switch from the hoisting state to the docking state, the No. 1 protective fence can move to the rear side of the No. 2 protective fence.

[0046] When the high-level hanger 3 and the low-level hanger 4 are in the hoisting state, the connecting plate 6 is suspended by the sling 2, and the connecting plate 6 suspends the low-level hanger 4 through the slot 7 and the locking block 8. When the high-level hanger 3 and the low-level hanger 4 are in the docking state, the low-level hanger 4 is suspended by the high-level hanger 3 through the connecting plate 6 and the connecting shaft 5.

[0047] In this embodiment, the outer diameter of the top end of the connecting shaft 5 is larger than the outer diameter of the shaft body of the connecting shaft 5. The connecting plate 6 is provided with a circular hole that matches the outer diameter of the shaft body of the connecting shaft 5, so that the top end of the connecting shaft 5 can suspend the connecting shaft 5 on the connecting plate 6.

[0048] like Figures 2 to 4 As shown, the connecting assembly also includes a locking rod 9, which is rotatably mounted on the connecting plate 6. The locking rod 9 includes a locking end 901 that contacts the side of the lower hanger 4 away from the upper hanger 3, a mounting part 902 that rotatably passes through the connecting plate 6, and a trigger end 903 that is pushed up by the upper hanger 3 and abuts against the side of the upper hanger 3. When the locking end 901 contacts the side of the lower hanger 4 away from the upper hanger 3, the upper hanger 3 and the lower hanger 4 are locked in the hoisting state. After the trigger end 903 is disengaged from the upper hanger 3, the locking rod 9 rotates under its own weight, causing the trigger end 903 to separate from the lower hanger 4.

[0049] When the locking end 901 contacts the side of the lower gantry 4 away from the upper gantry 3, the locking end 901 cooperates with the upper gantry 3 to clamp the lower gantry 4. At this time, the upper gantry 3 and the lower gantry 4 are locked, so that the upper gantry 3 and the lower gantry 4 are locked in the hoisting state.

[0050] The weight of the locking end 901 is set to be greater than the weight of the trigger end 903. When the trigger end 903 is separated from the high-position hanger 3, the locking rod 9 swings under its own weight, causing the locking end 901 to swing to the outside of the low-position hanger 4, thereby unlocking the high-position hanger 3.

[0051] In order to unlock the high-level hanger 3 by locking rod 9, after the No. 2 protective fence is pre-fixed, the No. 1 protective fence is lowered a certain distance by a crane. During this process, the tension of the No. 1 protective fence on the sling 2, combined with the limiting effect of the No. 2 protective fence on the connecting plate 6, keeps the connecting plate 6 at a constant height. When the high-level hanger 3 falls, it will disengage from the trigger end 903.

[0052] like Figure 3 As shown, the connecting assembly also includes a sliding sleeve 10 fixedly installed at the bottom of the connecting plate 6. The end of the sliding sleeve 10 facing the high-position hanger 3 is slidably sleeved on the high-position hanger 3, and the side of the sliding sleeve 10 facing the low-position hanger 4 is set in an open state. The slot 7 is set on the top of the side of the sliding sleeve 10 facing the low-position hanger 4.

[0053] During the process of rotating the high-position gantry 3 to switch the high-position gantry 3 and the low-position gantry 4 to the docking state, the sliding sleeve 10 is pulled away from the low-position gantry 4 through the opening, thereby separating the slot 7 from the locking block 8. During the next lifting operation, during the process of rotating the high-position gantry 3 to switch the high-position gantry 3 and the low-position gantry 4 to the lifting state, the sliding sleeve 10 is put back onto the low-position gantry 4 through the opening, thereby putting the locking block 8 into the slot 7.

[0054] like Figure 2 As shown, the high-level hanger 3 includes a high-level crossbeam 301 and a high-level boom 302. Both ends of the high-level crossbeam 301 are fixedly installed with the high-level boom 302, which is L-shaped. The low-level hanger 4 includes a low-level crossbeam 401 and a low-level boom 402. Both ends of the low-level crossbeam 401 are fixedly installed with the low-level boom 402, which is L-shaped. A connecting component is set between the high-level boom 302 and the low-level boom 402. The higher end of the sling 2 is connected to the top of the high-level boom 302.

[0055] The transverse sections of the two high-level booms 302 are inserted into the two outermost slots of the No. 1 protective fence, while the transverse sections of the two low-level booms 402 are inserted into the two outermost slots of the No. 2 protective fence. The high-level booms 3 and low-level booms 4 simultaneously suspend the protective fence at two symmetrical positions, which can improve the stability and safety of the hoisting.

[0056] like Figure 2 As shown, the high-level gantry 3 also includes a high-level telescopic boom 303 that can be lifted and lowered and installed in the high-level boom 302, and the low-level gantry 4 also includes a low-level telescopic boom 403 that can be lifted and lowered and installed in the low-level boom 402. The connecting component is disposed between the high-level boom 302 and the low-level telescopic boom 403, and the higher end of the sling 2 is connected to the top of the high-level telescopic boom 303.

[0057] Both the high-position telescopic boom 303 and the low-position telescopic boom 403 are connected to the bottom end of a cable 11. Both the high-position boom 302 and the low-position boom 402 are slidably installed on the transverse section of a clamp plate 12 that is fixedly connected to the cable 11. Both the high-position boom 302 and the low-position boom 402 are installed on the transverse section of a stop block 13 that abuts against the side of the clamp plate 12 facing the cable 11. When the high-position boom 302 and the low-position boom 402 are supported on the lower surface of the top beam of the protective fence, the top beam of the protective fence presses down on the stop block 13, causing the stop block 13 to disengage from the clamp plate 12.

[0058] like Figure 6 As shown, in this embodiment, guide wheels 21 are installed at the corners of both the high-position boom 302 and the low-position boom 402. When the cable 11 passes through the guide wheels 21, the guide wheels 21 cause the cable 11 to form a suitable L-shape within both the high-position boom 302 and the low-position boom 402. The height of the stop block 13 is less than the height difference between the high-position boom 302 and the low-position boom 402. The locking blocks 8 are fixedly installed on both sides of the top of the low-position telescopic boom 403.

[0059] During hoisting, the tension of sling 2 is applied to clamping plate 12 through the high-position telescopic boom 303, the low-position telescopic boom 403, and cable 11. Utilizing the weight of the protective fence, clamping plate 12 shifts to one side of the protective fence. Ultimately, the high-position boom 302, in conjunction with clamping plate 12, clamps protective fence No. 1, ensuring it is close to the vertical section of the high-position boom 302. Similarly, the low-position boom 402, in conjunction with clamping plate 12, clamps protective fence No. 2, ensuring it is close to the vertical section of the low-position boom 402. Thus, during each hoisting operation, protective fences No. 1 and No. 2 can be confined to their standard positions, facilitating subsequent docking and installation work.

[0060] like Figure 6 As shown, both the high-level boom 302 and the low-level boom 402 are equipped with transverse springs 14. The end of the transverse spring 14 facing the clamping plate 12 is connected to the clamping plate 12, which is used to keep the clamping plate 12 at its furthest point from the vertical sections of the high-level boom 302 and the low-level boom 402 in the initial state. The transverse springs 14 ensure that, in the initial state, there is sufficient space on the transverse sections of both the high-level boom 302 and the low-level boom 402 for the top crossbeam of the protective fence to be fitted from bottom to top. After the protective fence is removed from the high-level boom 302 and the low-level boom 402, the transverse springs 14 automatically reset, causing the clamping plate 12 to return to its initial position.

[0061] like Figure 3 As shown, vertical springs 15 are provided on the sides of the transverse sections of both the high-position boom 302 and the low-position boom 402. The top of the vertical spring 15 is connected to the stop block 13. The vertical spring 15 keeps the stop block 13 in the highest position in the initial state, thus maintaining the limiting effect on the clamping plate 12.

[0062] like Figure 6 As shown, both the high-level boom 302 and the low-level boom 402 have through grooves 16 in their transverse sections. Each side wall of the through groove 16 has a wheel groove 17. A slider 18 is fixedly installed at the bottom of the clamping plate 12. Each side of the slider 18 has a pair of rollers 19 that roll within the wheel grooves 17. The cooperation between the through grooves 16 and the sliders 18 effectively limits the clamping plate 12 along the length of the protective fence. Simultaneously, the cooperation between the rollers 19 and the wheel grooves 17 reduces the resistance when the clamping plate 12 moves along the transverse sections of the high-level boom 302 and the low-level boom 402. One end of the cable 11 near the clamping plate 12 is fixedly connected to the slider 18.

[0063] like Figure 1 As shown, there is one suspension wheel 1 and one sling 2 on each side of the length of the protective fence. The two suspension wheels 1 are connected by a suspension beam 20, and the suspension wheels 1 are connected to the crane through the suspension beam 20.

[0064] The working process of the protective fence hoisting fixture in this embodiment is as follows:

[0065] I. In the initial state:

[0066] 1. Under the action of the transverse spring 14, the high-position telescopic boom 303 and the low-position telescopic boom 403 are respectively located at the lowest position in the high-position boom 302 and the low-position boom 402.

[0067] 2. The stop block 13 is in the highest position under the action of the vertical spring 15. At this time, the stop block 13 abuts against the bottom of the side of the clamp plate 12 facing the cable 11, restricting the clamp plate 12 to the position furthest from the vertical section of the high-position boom 302 and the low-position boom 402.

[0068] 3. The trigger end 903 of the locking rod 9 abuts against the side of the high-level boom 302, and the trigger end 903 is tilted upward. The locking end 901 of the locking rod 9 is tilted towards the inside of the low-level telescopic boom 403, and the locking end 901 contacts the side of the low-level telescopic boom 403 away from the high-level telescopic boom 303, thus locking the high-level hanger 3 and the low-level hanger 4 in the hoisting state.

[0069] II. When installing guardrail No. 1 onto the high-level hanger 3:

[0070] 1. Operate the crane to move the lifting fixture so that the horizontal sections of the two high-level booms 302 pass through the two outermost strip holes of the No. 1 protective fence. At this time, the vertical section of the high-level boom 302 and the clamping plate 12 on the high-level boom 302 are located on both sides of the No. 1 protective fence.

[0071] 2. During the lifting of the hoisting fixture by the crane, as the high-level boom 302 moves upward, the No. 1 protective fence presses down on the stop block 13 on the high-level boom 302, compressing the vertical spring 15. The stop block 13 disengages from the clamp on the high-level boom 302. At this time, the tension of the sling 2 is applied to the slider 18 through the high-level telescopic boom 303 and the cable 11, pulling the slider 18 to move towards the vertical section of the high-level boom 302. This causes the clamp plate 12 to press the protective fence against the vertical section of the high-level boom 302, and the clamp plate 12 cooperates with the high-level boom 302 to clamp the protective fence.

[0072] 3. When installing guardrail No. 2 onto low-position hanger 4:

[0073] 1. Operate the crane so that the horizontal sections of the two low-position hangers 4 pass through the two outermost strip holes of the No. 2 protective fence, and then lift the hoisting fixture. The No. 2 protective fence is held by the low-position boom 402 and the clamping plate 12 on the low-position boom 402.

[0074] IV. When installing guardrail No. 1 and guardrail No. 2 onto the base:

[0075] 1. First, operate the crane to place the No. 2 protective fence onto the base and pre-connect the No. 2 protective fence to the column.

[0076] 2. The crane is lowered a certain distance. During this process, the No. 2 protective fence limits the top of the low-position hanger 4. During the lowering of the No. 1 protective fence, the connecting plate 6 remains at a constant height, while the high-position boom 302 moves down and disengages from the trigger end 903 of the locking rod 9. The locking rod 9 rotates under its own weight, causing the locking end 901 to disengage from the low-position telescopic boom 403, thus unlocking the high-position hanger 3 and the low-position hanger 4.

[0077] 3. The worker pushes the connecting plate 6 away from the end of the connecting shaft 5, so that the connecting plate 6, the high-level hanger 3 and the No. 1 protective fence rotate synchronously around the connecting shaft 5. During this process, the crane operator can control the position of the crane boom by operating the crane to coordinate with the rotation of the high-level hanger 3.

[0078] When the high-position hanger 3 is rotated to the rear of the low-position hanger 4 and is flush with the low-position hanger 4 in the length direction, the No. 1 protective fence is located behind the No. 2 protective fence, and the height of the No. 1 protective fence is greater than the height of the No. 2 protective fence.

[0079] 4. Continue operating the crane to lower the No. 1 protective fence, so that the No. 1 protective fence falls onto the base. At this time, pre-connect the No. 1 protective fence with the base and the column.

[0080] 5. Continue operating the crane to lower the lifting fixture, causing the high-position boom 302 and the low-position boom 402 to separate from guardrails No. 1 and No. 2, respectively. During this process, the horizontal spring 14 causes the clamping plate 12 to return to its original position, and the high-position telescopic boom 303 retracts into the high-position boom 302, while the low-position telescopic boom 403 retracts into the low-position boom 402. After the clamping plate 12 disengages from the top of the stop block 13, the vertical spring 15 causes the stop block 13 to return to its original position, locking the clamping plate 12 in its initial position.

[0081] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A hoisting fixture for protective fences, characterized in that, include: A suspension wheel (1) that can be connected to a crane; a sling (2) suspended on the suspension wheel (1); a high-level hanger (3) connected to the higher end of the sling (2) and supported on the lower surface of the top beam of the protective fence by inserting it into a slot in the protective fence; a low-level hanger (4) located on one side of the high-level hanger (3) and supported on the lower surface of the top beam of the protective fence by inserting it into a slot in another protective fence; a connecting assembly that rotatably connects the high-level hanger (3) and the low-level hanger (4) and connects the lower end of the sling (2) to the low-level hanger (4); the height of the high-level hanger (3) is greater than the height of the low-level hanger (4); the connecting assembly allows the high-level hanger (3) and the low-level hanger (4) to be locked in a back-to-back hoisting state and to be docked in a front-to-back distribution along the length of the protective fence; The high-level hanger (3) includes a high-level crossbeam (301) and a high-level boom (302), with the high-level boom (302) fixedly installed at both ends of the high-level crossbeam (301); the low-level hanger (4) includes a low-level crossbeam (401) and a low-level boom (402), with the low-level boom (402) fixedly installed at both ends of the low-level crossbeam (401), the connecting assembly being disposed between the high-level boom (302) and the low-level boom (402), and the higher end of the sling (2) being connected to the top end of the high-level boom (302); The high-level hanger (3) also includes a high-level telescopic arm (303) that can be vertically installed in the high-level boom (302), and the low-level hanger (4) also includes a low-level telescopic arm (403) that can be vertically installed in the low-level boom (402). The connecting assembly is disposed between the high-level boom (302) and the low-level telescopic arm (403), and the higher end of the sling (2) is connected to the top end of the high-level telescopic arm (303). The high-level boom (302) and the low-level boom (402) are fixedly connected. The bottom ends of the high-position telescopic boom (303) and the low-position telescopic boom (403) are connected to cables (11). The horizontal sections of the high-position boom (302) and the low-position boom (402) are slidably installed with clamps (12) that are fixedly connected to the cables (11). The horizontal sections of the high-position boom (302) and the low-position boom (402) are each equipped with a stop block (13) that abuts against the side of the clamp (12) facing the cables (11). When the high-position boom (302) and the low-position boom (402) are supported on the lower surface of the top beam of the protective fence, the top beam of the protective fence presses down on the stop block (13) so that the stop block (13) is separated from the clamp (12). The connecting assembly includes a connecting shaft (5), a connecting plate (6), a slot (7), and a locking block (8). The connecting shaft (5) is vertically fixed to one end of the low-position hanger (4). The connecting plate (6) is slidably sleeved on the high-position hanger (3) in the height direction, and the connecting plate (6) is located above the low-position hanger (4). The lower end of the sling (2) is fixedly connected to the connecting plate (6). The slot (7) is located on the bottom of the connecting plate (6) facing the low-position hanger (4). The locking block (8) is fixedly located at the top of the low-position hanger (4), and the slot (7) is sleeved on the locking block (8). When the high-position hanger (3) and the low-position hanger (4) switch from the hoisting state to the docking state, the slot (7) disengages from the locking block (8).

2. The protective fence hoisting fixture according to claim 1, characterized in that, The connecting assembly also includes a locking rod (9), which is rotatably mounted on the connecting plate (6). The locking rod (9) includes a locking end (901) that contacts the side of the lower-position hanger (4) away from the upper-position hanger (3), a mounting part (902) that rotatably passes through the connecting plate (6), and a trigger end (903) that is pushed up by the upper-position hanger (3) and abuts against the side of the upper-position hanger (3). When the locking end (901) contacts the side of the lower-position hanger (4) away from the upper-position hanger (3), the upper-position hanger (3) and the lower-position hanger (4) are locked in the hoisting state. After the trigger end (903) is disengaged from the upper-position hanger (3), the locking rod (9) rotates under its own weight, causing the trigger end (903) to separate from the lower-position hanger (4).

3. The protective fence hoisting fixture according to claim 1, characterized in that, The connecting assembly also includes a sliding sleeve (10) fixedly installed at the bottom of the connecting plate (6). The end of the sliding sleeve (10) facing the high-position hanger (3) is slidably sleeved on the high-position hanger (3). The side of the sliding sleeve (10) facing the low-position hanger (4) is set in an open state. The slot (7) is set on the top of the side of the sliding sleeve (10) facing the low-position hanger (4).

4. The protective fence hoisting fixture according to claim 1, characterized in that, Both the high-position boom (302) and the low-position boom (402) are provided with transverse springs (14) in their transverse sections. The end of the transverse spring (14) facing the clamp (12) is connected to the clamp (12) to keep the clamp (12) at its farthest point from the vertical section of the high-position boom (302) and the low-position boom (402) in the initial state.

5. The protective fence hoisting fixture according to claim 1, characterized in that, Vertical springs (15) are provided on the sides of the transverse sections of the high-position boom (302) and the low-position boom (402), and the top of the vertical springs (15) is connected to the stop block (13).

6. The protective fence hoisting fixture according to claim 1, characterized in that, Both the high-level boom (302) and the low-level boom (402) are provided with through grooves (16) in their transverse sections. Both sides of the through grooves (16) are provided with wheel grooves (17). The bottom end of the clamping plate (12) is fixedly installed with a slider (18). Both sides of the slider (18) are provided with a pair of rollers (19) that roll in the wheel grooves (17).

7. The protective fence hoisting fixture according to claim 1, characterized in that, One suspension wheel (1) and one sling (2) are provided on each side of the length of the protective fence. The two suspension wheels (1) are connected by a suspension beam (20), and the suspension wheel (1) is connected to the crane through the suspension beam (20).

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