Arch frame lifting trolley and arch frame mounting trolley

Abstract

The utility model discloses an arch frame hoisting trolley and an arch frame mounting trolley, the hoisting trolley comprises arch frame hoisting equipment constructed based on a winch, a hoisting oil cylinder and a hoisting arm, and the hoisting arm is driven by the hoisting oil cylinder to pitch and swing; the device further comprises a rail trolley running based on double rails. The arch frame hoisting equipment is arranged on the rail trolley, wheels are symmetrically arranged on the rail trolley left and right through two trolley longitudinal beams, an anti-rollover device for preventing the rail trolley from rollover is arranged on the rail trolley, the anti-rollover device comprises a protective roller, and the protective roller is connected with a rail through a groove in the side face of the rail; the trolley longitudinal beam is of a self-walking structure; or the rail trolley is driven by the driving oil cylinder to move. The mounting trolley comprises the hoisting trolley. The arch frame hoisting trolley has the beneficial effects that the hoisting device is arranged on the double-track rail trolley, so that the return time of the hoisting arm can be effectively shortened, and the mounting efficiency of an arch frame is improved. The arch frame mounting trolley lifts the arch frame through the arch frame lifting trolley, and the arch frame mounting efficiency is high.

Description

Technical Field

[0001] The utility model relates to a tunnel operation trolley, in particular to an arch frame hoisting trolley and an arch frame installation trolley. Background Art

[0002] In the construction of railway or highway tunnels, it is necessary to erect steel arches in the excavation section with weak surrounding rock grade. The existing arch installation method is to hoist the arch from one end of the trolley above the installation trolley, then transfer the arch to the arch carrying trolley on the trolley, and transport the arch to the installation position by the carrying trolley. Finally, the arch is lifted to the installation height by the lifting device on the trolley and fixed to the excavated tunnel wall by anchor rods. There are two main ways to move the existing arch frame from the ground to the transport trolley of the trolley. One is the method of lifting and hoisting relay, such as the Chinese patent CN219691551U, published on September 15, 2023, and the name of the invention is "A tunnel arch frame installation system", which uses a winch to pull the arch frame from the ground to a vertical state and lift it to a set height. After that, the arch frame is lifted to a height higher than the transport trolley using a lifting device, and then the cantilever platform of the cantilever platform trolley is run under the arch frame, and then the arch frame is unloaded onto the cantilever platform of the trolley. In this method, since the trolley carries the steel arch frame on the cantilever platform, the arch frame cannot be lifted to the installation height directly by the lifting trolley, and the arch frame needs to be transferred to a load-bearing trolley again for lifting and installation. As a result, the trolley structure is complex, the trolley manufacturing material consumption is large, and it is bulky, and the manufacturing and use costs are high, which increases the cost of tunnel construction. The other is a single lifting method to lift the arch frame, such as the Chinese patent publication number CN211737162U, the publication date of October 23, 2020, and the name of the invention "Small-section tunnel or cavern construction trolley". The trolley lifts the arch frame by raising the lifting arm. When the lifting arm is in a vertical state, the lifting device lifts the arch frame carrying trolley to the set height, and then the arch frame is transferred to the carrying trolley. Then, the lifting arm needs to be turned down toward the face to avoid the arch frame, and then the carrying trolley can carry the arch frame to the face. The arch frame carrying trolley of the trolley can be directly lifted to the installation height by the lifting device without the need for secondary transfer on the trolley. Compared with the trolley of the lifting method of lifting and lifting relay, the overall structure is simple, the trolley is light in weight, the material consumption is small, and the manufacturing and use costs are relatively low. However, the trolley has a flipping movement of the boom to avoid the arch frame, the boom flipping amplitude is large, the lifting auxiliary time is long, and the lifting efficiency is low. Chinese patent publication number CN116480381A, publication date July 5, 2023, invention name "A multi-frame combined arch frame, installation trolley and installation method", the arch frame lifting device of the trolley adopts a telescopic boom. After the arch frame is transferred to the carrying trolley, the arch frame is avoided by retracting and falling back. Compared with the pure pitch swing boom, the swing amplitude can be reduced and auxiliary time can be saved. However, the telescopic speed of the boom in this way is relatively slow, and further improvement is needed to further shorten the arch frame lifting time and improve the arch frame installation efficiency. Summary of the invention

[0003] The first purpose of the utility model is to provide an arch frame lifting trolley to address the defect that the existing light trolleys are prone to local damage when adjusting their direction. The lifting device is arranged on a double-track track trolley so that after the arch frame and the lifting device are separated. The movable feature of the track trolley is utilized to quickly move the trolley away from the arch frame, and then the boom is lowered and returned to its original position in time. Compared with the tilting boom that continues to flip and increase the return stroke, or the lifting device of the telescopic boom that slowly retracts, the return time of the boom can be effectively shortened, thereby improving the arch frame installation efficiency. The second purpose of the utility model is to provide an arch frame installation trolley with the aforementioned arch frame lifting trolley.

[0004] To achieve the first purpose, the utility model adopts the following technical solution.

[0005] An arch lifting trolley comprises an arch lifting device constructed based on a winch, a lifting cylinder and a lifting arm, the lifting arm being driven by the lifting cylinder to pitch and swing; it also comprises a track trolley running on double tracks; the arch lifting device is arranged on the track trolley, the track trolley has wheels symmetrically arranged on the left and right through two trolley longitudinal beams, the track trolley is provided with an anti-tipping device for preventing the track trolley from tipping over, the anti-tipping device comprises a protective roller, and the protective roller is connected to the track by means of a groove on the side of the track; the trolley longitudinal beam is a self-propelled structure; or, the track trolley is driven to move by a driving cylinder.

[0006] The arch frame hoisting trolley adopting the above-mentioned scheme is formed into a hoisting trolley that can run along the track by setting the hoisting equipment on the track trolley based on the double track. The hoisting trolley lifts the arch frame through the wheels arranged symmetrically on the left and right, and the hoisting trolley moves stably and reliably. When in use, it is set on the arch frame installation trolley, and when the arch frame is hoisted, it moves to the rear end of the trolley close to the tunnel entrance. When the arch frame is lifted, after the arch frame is lifted onto the installation trolley by raising the lifting arm, the lifting lifting arm can transfer the arch frame to the carrying trolley on the arch frame lifting device; the lifting trolley can also be moved a set distance along the longitudinal direction of the trolley toward the tunnel face, and then the arch frame can be transferred to the carrying trolley on the arch frame lifting device, so that the arch frame can be transferred at a position closer to the center of gravity of the trolley, reducing the risk of tipping over of the trolley and improving the safety of the entire arch frame installation operation; more importantly, after the arch frame is transferred from the lifting trolley to the carrying trolley on the arch frame lifting device, the lifting trolley can continue to move forward quickly, so that a certain activity distance is formed between the lifting trolley, the carrying trolley and the arch frame, and the lifting arm can be safely lowered using this distance, so that the lifting arm roughly returns to the arch frame lifting position, thereby avoiding the arch frame and quickly retreating to the rear end of the trolley close to the tunnel entrance. Compared with a tipping boom that continues to tip over to increase the return stroke, or a lifting device for a telescopic boom that slowly retracts, the return time of the boom can be effectively shortened, thereby improving the efficiency of arch installation.

[0007] Preferably, the hoist is a single-drum hoist; four single-drum hoists are arranged on the rail trolley, and every two single-drum hoists correspond to one lifting arm, and each lifting arm is provided with a plurality of fixed pulleys for guiding the lifting wire rope, and the plurality of fixed pulleys are distributed into two groups, and each group of fixed pulleys corresponds to one wire rope. By utilizing the four lifting wire ropes corresponding to the four hoists, four lifting points can be formed, which can effectively increase the lifting stability and lifting capacity, ensure the lifting safety, and meet the lifting requirements of lifting multiple steel arch frames that have been pre-assembled outside the cave at the same time, thereby improving the lifting efficiency. Obviously, the hoist can also adopt a double-drum hoist with two rope drums that synchronously reel in and release the rope, which can also form a lifting device with four lifting points and the same functions as four single-drum hoists, and can also simplify the control circuit, but the motor power of a single hoist needs to be increased.

[0008] Preferably, the longitudinal beam of the self-propelled structure is composed of the end beam of the bridge crane, and the driving wheel and the load-bearing wheel on the end beam of the bridge crane together constitute the wheel. In the bridge crane (also known as a traveling crane or an overhead crane, which is usually used for lifting equipment in industrial plants) in the prior art, the end beams are located at both ends of the main beam to support the main beam and drive the main beam (trolley) to travel. The load-bearing box beam includes a driving wheel and a load-bearing wheel. The driving wheel constitutes the output end of the driving wheel box. The driving wheel box constitutes the power source of the end beam and also constitutes the travel power source of the bridge crane main beam. The technology is mature and has its own brake device, which can realize parking brake so that the trolley does not move when the arch frame is hoisted to ensure safety in use. Goods can be purchased directly from the market to shorten the manufacturing cycle and reduce production costs, or they can be designed and manufactured separately according to actual needs to meet special structural needs.

[0009] Preferably, in the structure where the rail trolley is driven to move by a driving oil cylinder, two driving oil cylinders are connected in parallel on the rail trolley. The two oil cylinders are hydraulically controlled to synchronously extend and retract, thereby ensuring that the trolley runs smoothly and flexibly.

[0010] To achieve the second purpose, the utility model adopts the following technical solution.

[0011] An arch frame installation trolley comprises a trolley body, on which an arch frame lifting device and an arch frame hoisting device are provided, wherein the arch frame lifting device is composed of an arch frame lifting trolley for achieving the first purpose; two tracks for the operation of the arch frame lifting trolley are provided on the top of the trolley body, and the two tracks are connected by at least two cross beams to form a frame structure, and pedals are arranged on the plane of the cross beams, and the pedals constitute the top working platform of the installation trolley; the track trolley is located above the top working platform.

[0012] The arch frame installation trolley adopting the above-mentioned technical solution sets a track for the arch frame lifting trolley to run on the top of the trolley, and uses the arch frame lifting trolley to lift the arch frame. After the arch frame is lifted and transferred, the lifting trolley can continue to move forward quickly, so that a certain movable distance is formed between the lifting trolley, the carrying trolley and the arch frame, and this distance is used to safely lower the lifting arm so that the lifting arm roughly returns to the arch frame lifting position, thereby avoiding the arch frame and quickly retreating to the rear end of the trolley close to the hole. Compared with the tilting arm that continues to flip and increase the return stroke of the boom, or the lifting device of the telescopic boom that slowly retracts, it can effectively shorten the return time of the lifting arm and improve the efficiency of arch frame installation. At the same time, the track and the crossbeam are used to form the framework of the top working platform, so that the high strength and high rigidity characteristics of the track are fully utilized, thereby effectively saving the trolley material and reducing the manufacturing cost of the trolley.

[0013] Preferably, the track is formed by welding two H-shaped steels or I-shaped steels in parallel, or by welding two channel steels back to back, so that the groove is formed on the track by means of the cross-sectional shape of the H-shaped steel, I-shaped steel or channel steel; a track steel plate is flatly welded on the combination of the H-shaped steel, I-shaped steel or channel steel, and the upper plane of the track steel plate constitutes the bearing surface of the track. The combination of two H-shaped steels, I-shaped steels or channel steels and the track steel plate can effectively improve the bearing strength and rigidity of the track, reduce the risk of track deformation, ensure the flexible operation of the trolley, and ensure that the top working platform erected with the help of the track has sufficient bearing capacity to meet the bearing requirements of personnel, tools, materials and small construction equipment during arch lifting, transfer and installation.

[0014] Preferably, in the structure where the rail trolley is driven to move by a driving cylinder, the driving cylinder is connected between the arch frame lifting trolley and the cross beam, and passes through the pedal via a avoidance hole provided on the pedal. The hydraulic drive can be used instead of the electric drive to improve the stability of the lifting trolley operation.

[0015] The utility model has the beneficial effect that the arch frame lifting trolley can effectively shorten the return time of the lifting arm and improve the arch frame installation efficiency by arranging the lifting device on the double-track track trolley and utilizing the movable characteristics of the track trolley. The arch frame installation trolley utilizes the arch frame lifting trolley to lift the arch frame, and the arch frame installation efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic axonometric diagram of the structure of the middle arch frame hoisting trolley of the utility model.

[0017] Figure 2 It is a schematic front view of the structure of the arch frame lifting trolley in the utility model.

[0018] Figure 3 It is a structural schematic axonometric diagram of the arch frame lifting trolley in the utility model from another perspective.

[0019] Figure 4 It is a partial structural schematic front view of the arch frame installation trolley in the utility model.

[0020] Figure 5 This utility model Figure 4 A view in the figure.

[0021] Figure 6 It is a schematic axonometric diagram of the structure of the arch frame installation trolley of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments described.

[0023] Example 1, see Figure 1 , Figure 2 and Figure 3 A arch lifting trolley comprises an arch lifting device constructed based on a winch 1, a lifting cylinder 21 and a lifting arm 2, the lifting arm 2 is driven by the lifting cylinder 21 to pitch and swing; it also comprises a track trolley running on double tracks; the arch lifting device is arranged on the track trolley, the track trolley is provided with at least 4 even-numbered wheels 6 through two trolley longitudinal beams, the number of wheels on each trolley longitudinal beam is equal, the track trolley is provided with an anti-tipping device for preventing the track trolley from tipping over, the anti-tipping device comprises a protective roller 4, and the protective roller 4 is connected to the track by means of a groove on the side of the track; the trolley longitudinal beam is a self-propelled structure, and the winch 1 is a single-drum winch.

[0024] Among them, the rail trolley is provided with four winches 1, and every two winches 1 correspond to a lifting arm 2. Each lifting arm 2 is provided with a plurality of fixed pulleys 5 for guiding the lifting wire rope, and the plurality of fixed pulleys 5 are distributed into two groups, and each group of fixed pulleys 5 corresponds to a wire rope; the rail trolley has four wheels 6, and the number of wheels running on the two tracks is equal, and there are two wheels 6 running on each track. The two wheels 6 on the same side are arranged on the longitudinal beam of the trolley of the same square box beam 15 structure, and the wheels 6 contact the track through the part exposed from the bottom wall of the square box beam 15. The two square box beams 15 are welded together by a plurality of trolley cross beams 16, and the trolley floor 17 is welded on the trolley cross beam 16. The square box beam 15, the trolley cross beam 16 and the trolley floor 17 together constitute the trolley frame, and the arch frame lifting equipment is arranged on the trolley frame.

[0025] The longitudinal beam of the trolley of the self-propelled structure is composed of the end beam of the bridge crane, the driving wheel and the load-bearing wheel on the end beam of the bridge crane together constitute the wheel 6, and the output wheel of the driving wheel box constitutes the driving wheel of the rail trolley. The end beam of the bridge crane includes a square box beam 15, a driving motor 13 and a gear reducer 14, the gear reducer 14 is fixedly connected to the outside of the square box beam 15, the output end of the driving motor 13 is connected to the input end of the gear reducer 14, and the output end of the gear reducer 14 is connected to the driving wheel.

[0026] In this embodiment, a shoulder is formed at one end of the protective roller 4 and the wheel 6. The shoulder is located on the outer side of the track, and the shoulder is used to prevent the lifting trolley from sliding laterally.

[0027] In this embodiment, the protection roller 4 is arranged on the wheel guard bracket 20 , and each wheel guard bracket 20 is provided with two protection rollers 4 , and the wheel guard bracket 20 is hinged on the square box beam 15 .

[0028] In this embodiment, the number of wheels 6 may also be an even number of 6 or 8, and the number of wheels on the two square box beams 15 is equal.

[0029] In this embodiment, the rail trolley can also be driven to move by a driving cylinder, and two driving cylinders are connected in parallel on the rail trolley (this structure is not shown in the figure), thereby ensuring that the rail trolley runs smoothly and flexibly.

[0030] In this embodiment, the winch 1 can also adopt a double-drum winch with two rope drums for synchronously reeling and releasing the rope. When the double-drum winch is used, two winches 1 are arranged, each corresponding to a lifting arm 2, and the two sets of fixed pulleys 5 on the lifting arm 2 correspond to a rope drum respectively.

[0031] Example 2, see Figure 4 and Figure 5 A arch frame installation trolley comprises a trolley body, on which an arch frame lifting device and an arch frame hoisting device are provided, the arch frame lifting device is composed of the arch frame lifting trolley of Example 1; two tracks 3 for the arch frame lifting trolley to run are provided on the top of the trolley body, the two tracks 3 are connected by at least two cross beams 11 to form a frame structure, a pedal 12 is set on the plane of the cross beam 11, and the pedal 12 constitutes the top working platform of the installation trolley; the track trolley is located above the top working platform.

[0032] Reference Figure 6 The track 3 is formed by two H-shaped steels 31 welded in parallel, so that a groove is formed in the track 3 by means of the cross-sectional shape of the H-shaped steels 31; a track steel plate 32 is welded flat on the assembly of the H-shaped steels, and the upper plane of the track steel plate 32 constitutes the bearing surface of the track 3.

[0033] In this embodiment, the track 3 can also be formed by two I-beams welded in parallel, or by two channel steels welded back to back, so as to form a groove in the track 3 with the help of the cross-sectional shape of the I-beam or the channel steel; a track steel plate 32 is welded flat on the combination of the I-beam or the channel steel, and the upper plane of the track steel plate 32 constitutes the bearing surface of the track 3.

[0034] In this embodiment, in a structure where the driving unit is composed of a driving cylinder, the driving cylinder is connected between the arch hoisting trolley and the cross beam 11, and passes through the pedal 12 via an avoidance hole provided on the pedal 12. Although there is no drawing showing this structure, those skilled in the art can clearly know its specific structure based on the text records.

[0035] The remaining structures of this embodiment are the same as those of Embodiment 1 or 2 and will not be described again here.

[0036] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. An arch lifting trolley, comprising an arch lifting device constructed based on a winch (1), a lifting cylinder (21) and a lifting arm (2), wherein the lifting arm (2) is driven by the lifting cylinder (21) to pitch and swing; characterized in that: It also includes a rail trolley running on a double track; the arch hoisting device is arranged on the rail trolley, the rail trolley has wheels (6) symmetrically arranged on the left and right sides of the two trolley longitudinal beams, the rail trolley is provided with an anti-tipping device for preventing the rail trolley from tipping over, the anti-tipping device includes a protective roller (4), and the protective roller (4) is connected to the track by means of a groove on the side of the track; the trolley longitudinal beam is a self-propelled structure; or the rail trolley is driven to move by a driving cylinder.

2. The arch lifting trolley according to claim 1, characterized in that: The hoist (1) is a single-drum hoist; four single-drum hoists are arranged on the rail trolley, and every two single-drum hoists correspond to one lifting arm (2); each lifting arm (2) is provided with a plurality of fixed pulleys (5) for guiding the lifting wire rope, and the plurality of fixed pulleys (5) are distributed into two groups, and each group of fixed pulleys (5) corresponds to one wire rope.

3. The arch lifting trolley according to claim 1, characterized in that: The winch (1) is a double-drum winch with two rope drums for synchronously winding and releasing the rope; two double-drum winches are arranged on the rail trolley, each double-drum winch corresponds to one lifting arm (2), and each lifting arm (2) is provided with a plurality of fixed pulleys (5) for guiding the lifting wire rope, the plurality of fixed pulleys (5) are distributed into two groups, and each group of fixed pulleys (5) corresponds to one wire rope.

4. The arch lifting trolley according to claim 1, characterized in that: The longitudinal beam of the self-propelled structure is formed by the end beam of a bridge crane, and the driving wheel and the load-bearing wheel on the end beam of the bridge crane together form the wheel (6).

5. The arch lifting trolley according to claim 1, characterized in that: In the structure in which the rail trolley is driven to move by a driving cylinder, two driving cylinders are connected in parallel to the rail trolley.

6. An arch frame installation trolley, comprising a trolley body, on which an arch frame hoisting device and an arch frame lifting device are provided, characterized in that: The arch lifting device is composed of the arch lifting trolley described in any one of claims 1 to 5; two tracks (3) for the arch lifting trolley to run are provided on the top of the trolley body, and the two tracks (3) are connected by at least two cross beams (11) to form a frame structure, and pedals (12) are arranged on the plane of the cross beams (11), and the pedals (12) constitute the top working platform for installing the trolley; the track trolley is located above the top working platform.

7. The arch mounting trolley according to claim 6, characterized in that: The track (3) is formed by welding two H-shaped steels (31) or I-shaped steels in parallel, or by welding two channel steels back to back, so that the groove is formed in the track (3) by means of the cross-sectional shape of the H-shaped steel (31), I-shaped steel or channel steel; a track steel plate (32) is welded flat on the combination of the H-shaped steel, I-shaped steel or channel steel, and the upper plane of the track steel plate (32) constitutes the bearing surface of the track (3).

8. The arch mounting trolley according to claim 6 or 7, characterized in that: In a structure in which the rail trolley is driven to move by a driving cylinder, the driving cylinder is connected between the arch frame lifting trolley and the crossbeam (11), and passes through the pedal (12) via an avoidance hole provided on the pedal (12).

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