A heavy-duty template trailer device

Abstract

This utility model discloses a heavy-duty formwork trailer device, belonging to the field of engineering machinery. The device includes a front lifting device, a trailer frame, a rear lifting device, and a connecting device. The front lifting device includes front wheels, axles, a slewing bearing, a first support frame, a first linkage arm, a second linkage arm, a second support frame, and a front hydraulic jack. Two front wheels are symmetrically mounted on both sides of the axle system. The front lifting device uses a four-bar linkage structure and the front hydraulic jack to adjust the height of the second support frame. Two rear lifting devices are respectively installed on both sides of the rear of the trailer frame, with a connecting device installed between the two rear lifting devices. Compared with existing technologies, the front and rear lifting devices in this device can flexibly match trailer frames of different sizes, and are characterized by convenient assembly and disassembly, flexible steering, and independent lifting capabilities, solving the technical problem of difficult movement of heavy formwork.

Description

Technical Field

[0001] This utility model belongs to the field of engineering machinery, and in particular relates to a heavy-duty formwork trailer device. Background Technology

[0002] In the construction of hardened roads in coal mine roadways, traditional methods commonly use channel steel or profiles for formwork. However, these rigid formwork materials have significant drawbacks: their individual dimensions are large and their structure is bulky, resulting in low transportation efficiency. They often require frequent trips by transport vehicles, significantly increasing energy consumption and construction costs.

[0003] To overcome the drawbacks of traditional formwork materials, engineers have developed a folding support formwork with automatic unfolding and retraction functions (hereinafter referred to as "automatic folding formwork"). This formwork can automatically unfold in underground roadways to provide support, effectively improving formwork efficiency. However, to achieve its automation function, such formwork generally integrates complex hydraulic systems and numerous actuator components (such as cylinders, hydraulic stations, control valve groups, etc.), resulting in a significant increase in its overall weight; a single formwork typically weighs 1 to 2 metric tons. Such enormous weight poses a severe challenge to underground transportation.

[0004] To address the transportation challenges of automated folding templates, existing technologies primarily employ two methods:

[0005] 1) Heavy-duty shovel truck transportation: This is currently the most common method. However, heavy-duty shovel trucks are large in size. When operating in narrow, winding, and height-restricted coal mine tunnels, they have a large turning radius, extremely poor maneuverability, and are very difficult to operate. There is a risk of colliding with tunnel walls or equipment, and the passage capacity is greatly limited.

[0006] 2) Simple tow wheel assisted movement: Some technicians attempted to install tow wheels or rollers at the bottom of the formwork to assist movement by towing. However, this method has fundamental flaws: (a) its function is limited to providing slight horizontal movement assistance after the equipment is installed in place; (b) most importantly, this type of simple tow wheel structure lacks effective lifting and adjustment functions, and cannot adjust the height of the equipment. When encountering uneven roadway floors or needing to precisely place the formwork at a predetermined elevation, it is necessary to find and transport suitable pads for manual height adjustment, which is cumbersome, inefficient, and poses safety hazards.

[0007] It is evident that existing technologies have significant shortcomings in the transportation and positioning of automated folding formwork: heavy-duty shovels are unsuitable for the confined spaces of mine roadways, while simple tugboats cannot solve the problem of precise height adjustment. Therefore, how to achieve safe, convenient, and efficient lifting (height adjustment) and transfer (horizontal movement) of heavy-duty (1-2 ton) automated folding formwork in coal mine roadways with extremely limited space and complex floor conditions has become a key technical challenge restricting the widespread application of this technology. There is an urgent need to develop a novel device or method that can effectively solve the above problems. Utility Model Content

[0008] To address the aforementioned technical problems, this utility model provides a heavy-duty template trailer device, specifically solving the problems through the following technical means:

[0009] A heavy-duty template trailer device, characterized in that it includes a front lifting device, a trailer frame, a rear lifting device, and a connecting device, wherein: the front lifting device includes front wheels, a tire axle system, a slewing bearing, a first support frame, a first connecting arm, a second connecting arm, a second support frame, and a front hydraulic jack; two front wheels are symmetrically mounted on both sides of the tire axle system; the slewing bearing is rotatably mounted on the top of the tire axle system; the first support frame is fixed on the upper side of the slewing bearing; the first support frame has a first top hole, a first middle hole, and a first bottom hole sequentially formed from top to bottom; one end of the first connecting arm is connected to the first top hole of the first support frame via a pivot shaft; one end of the second connecting arm is connected to the first middle hole of the first support frame via a pivot shaft; the bottom hole of the front hydraulic jack is connected to the first bottom hole of the first support frame via a pivot shaft; the inner side of the second support frame has a second top hole, a second upper hole, and a second middle hole sequentially formed from top to bottom; The second top hole of the second support frame is connected to the other end of the first connecting arm via a pivot shaft. The second upper hole of the second support frame is connected to the top hole of the front hydraulic jack via a pivot shaft. The second middle hole of the second support frame is connected to the other end of the second connecting arm via a pivot shaft. An outer middle hole for connecting the trailer frame is provided in the middle of the outer side of the second support frame. The outer middle hole is connected to the upper connector in the middle of the front side of the trailer frame via a pivot shaft. An outer bottom hole for connecting the trailer frame is provided at the bottom of the second support frame. The outer bottom hole is connected to the lower connector in the bottom of the front side of the trailer frame via a pivot shaft. The two rear lifting devices are respectively installed on both sides of the rear of the trailer frame, and a connecting device is installed between the two rear lifting devices.

[0010] Preferably, the middle part of the tire axle system extends outward to form a hinge joint, the outer end of the hinge joint is connected to one end of the trailer rod via a pivot, and the other end of the trailer rod is connected to a cross shaft via a pivot, the cross shaft being used to connect to the trailer.

[0011] Preferably, the rear lifting device includes caster seats, a rear hydraulic jack, lifting outriggers, and tow wheels, wherein:

[0012] The caster seat consists of a square sleeve and corner grooves, the corner grooves being used to engage with the frame of the trailer frame;

[0013] The main body of the lifting outrigger is a hollow square tube. The bottom of the hollow square tube is provided with a square platform for connecting the towing wheel. The outer diameter of the square platform is larger than the inner diameter of the square tube. One end of the hollow square tube is movably set inside the square tube.

[0014] The height of the rear hydraulic jack is greater than the depth of the hollow square tube. The lower part of the rear hydraulic jack is installed inside the hollow square tube. The top hole of the rear hydraulic jack is fixed to the upper side of the inside of the square tube by a rotating shaft. The lifting and lowering movement of the rear hydraulic jack can drive the caster seat to lift and lower.

[0015] Preferably, the corner groove of the caster seat is provided with a slot for connecting the clip of the trailer frame.

[0016] Preferably, the connecting device is a strap, and the end of the strap is connected to a strap tightener.

[0017] The heavy-duty template trailer device of this utility model has the following beneficial effects:

[0018] 1) Solving the problem of lifting heavy formwork in confined spaces: By setting up front and rear lifting devices with independent lifting functions (both using a four-bar linkage structure in conjunction with hydraulic jacks), the height of different parts of the formwork can be adjusted independently and precisely. This effectively solves the pain point of the simple tow wheel solution in the background technology, which cannot adjust the equipment height and relies on manual height adjustment. It is especially suitable for the uneven working conditions of coal mine roadway floors, realizing the safe and convenient lifting and leveling of heavy formwork in confined spaces.

[0019] 2) Significantly improves the efficiency and safety of transfer in narrow alleyways: The device itself has a compact structure and flexible steering (thanks to the front wheel steering mechanism), overcoming the fatal defects of heavy-duty shovel trucks, such as large size, large turning radius, poor maneuverability, difficult operation, and limited passage in narrow alleyways. Combined with its lifting function, it realizes efficient and safe horizontal transfer (towing movement) of heavy templates in complex and confined spaces.

[0020] 3) Enhanced equipment versatility and adaptability: The front and rear lifting devices can flexibly match trailer frames of different sizes, and the entire device is easy to assemble and disassemble. This allows the device to be adapted to different specifications and models of automatic folding formwork (1-2 ton class), improving the equipment's versatility and adaptability to different construction needs.

[0021] 4) Modular design facilitates underground transportation and deployment: The modular design of this device (such as front lifting, rear lifting, trailer frame, connecting device, etc. can be disassembled and combined) effectively reduces the transportation volume and weight of individual components, facilitates transportation in narrow tunnels, reduces transportation frequency and energy consumption, and solves the transportation problems caused by the large and heavy equipment in the background technology.

[0022] 5) Convenient operation, reduced reliance on manual labor and safety risks: The integrated hydraulic lifting control (front and rear hydraulic jacks) makes lifting operation simple and efficient, greatly reducing the manual handling, raising work intensity and time required by traditional methods, and significantly reducing the labor intensity and safety risks of workers. Attached Figure Description

[0023] To more clearly illustrate the technical solution of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0025] Figure 2 This is a front structural diagram of the present invention;

[0026] Figure 3 This is a schematic diagram of the front lifting device parts of this utility model;

[0027] Figure 4 This is a schematic diagram of the front lifting device of this utility model;

[0028] Figure 5 This is a schematic diagram of the rear lifting device parts of this utility model;

[0029] Figure 6 This is a schematic diagram of the rear lifting device structure of this utility model;

[0030] Figure 7 This is a schematic diagram of the card slot position of this utility model.

[0031] In the diagram, 1-front lifting device, 101-front wheel, 102-tire axle system, 103-slewing bearing, 104-first support frame, 105-first linkage arm, 106-second linkage arm, 107-second support frame, 108-front hydraulic jack, 109-hinged joint, 110-trailer tie rod, 111-cross shaft, 2-trailer frame, 201-upper connector, 202-lower connector, 203-clamp, 3-rear lifting device, 301-caster seat, 302-rear hydraulic jack, 303-lifting outrigger, 304-trailer wheel, 305-slot, 4-connecting device. Detailed Implementation

[0032] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0033] The present invention will now be described in detail with reference to the accompanying drawings.

[0034] like Figures 1 to 7 As shown, the heavy-duty template trailer device includes a front lifting device 1, a trailer frame 2, a rear lifting device 3, and a connecting device 4. In the figure, the front lifting device 1 is installed at the front center of the trailer frame 2. The front lifting device 1 includes a front wheel 101, a tire axle system 102, a slewing bearing 103, a first support frame 104, a first linkage arm 105, a second linkage arm 106, a second support frame 107, and a front hydraulic jack 108. The two front wheels 101 are symmetrically installed on both sides of the tire axle system 102. The slewing bearing 103 is rotatably installed on the top of the tire axle system 102. The first support frame 104 is fixed on the upper side of the slewing bearing 103.

[0035] In the figure, the first support frame 104 has a first top hole, a first middle hole, and a first bottom hole sequentially from top to bottom; one end of the first connecting arm 105 is connected to the first top hole of the first support frame 104 via a pivot, one end of the second connecting arm 106 is connected to the first middle hole of the first support frame 104 via a pivot, and the bottom hole of the front hydraulic jack 108 is connected to the first bottom hole of the first support frame 104 via a pivot; the inner side of the second support frame 107 has a second top hole, a second upper hole, and a second middle hole sequentially from top to bottom. The second top hole of the second support frame 107 is connected to the other end of the first connecting arm 105 via a pivot. The second upper hole of the second support frame 107 is connected to the top hole of the front hydraulic jack 108 via a pivot. The second middle hole of the second support frame 107 is connected to the other end of the second connecting arm 106 via a pivot. An outer middle hole for connecting the trailer frame 2 is provided on the outer middle part of the second support frame 107. The outer middle hole is connected to the upper connector 201 on the front middle part of the trailer frame 2 via a pivot. An outer bottom hole for connecting the trailer frame 2 is provided on the bottom of the second support frame 107. The outer bottom hole is connected to the lower connector 202 on the front bottom part of the trailer frame 2 via a pivot.

[0036] Specifically, a front lifting device with independent lifting function is installed, and a four-bar linkage structure is used in conjunction with a hydraulic jack to complete the height adjustment of the front end. Furthermore, the middle of the tire axle system 102 extends outward to form a hinge joint 109. The outer end of the hinge joint 109 is connected to one end of the trailer tie rod 110 via a pivot. The other end of the trailer tie rod 110 is connected to a cross shaft 111 via a pivot. The cross shaft 111 is used to connect to the trailer. By operating the tie rod to the trailer equipment and connecting it, towing can be initiated. The trailer tie rod adopts a cross shaft structure, which is convenient for installation and adjustment and can adapt to multi-angle transmission.

[0037] In the figure, two rear lifting devices 3 are respectively installed on both sides of the rear of the trailer frame 2, and a connecting device 4 is installed between the two rear lifting devices 3. Specifically, preferably, the rear lifting device 3 includes a caster seat 301, a rear hydraulic jack 302, a lifting outrigger 303, and a tow wheel 304. In the figure: the caster seat 301 is composed of a square sleeve and a corner groove, the corner groove being used to engage the frame of the trailer frame 2; the main body of the lifting outrigger 303 is a hollow square tube, and a square platform for connecting the tow wheel 304 is provided at the bottom of the hollow square tube. The outer diameter of the square platform is larger than the inner diameter of the square sleeve, and one end of the hollow square tube is movably set inside the square sleeve; the height of the rear hydraulic jack 302 is greater than the depth of the hollow square tube, the lower part of the rear hydraulic jack 302 is installed inside the hollow square tube, and the top hole of the rear hydraulic jack 302 is fixed to the upper side of the inside of the square sleeve by a rotating shaft. The lifting movement of the rear hydraulic jack 302 can drive the caster seat 301 to lift.

[0038] In actual operation, by setting up independent lifting devices at the front and rear, both employing a four-bar linkage structure in conjunction with hydraulic jacks, the height of different parts of the formwork can be adjusted independently and precisely. This effectively solves the pain point of the simple tow wheel solution in the background technology, which cannot adjust the equipment height and relies on manual shimming for adjustment. It is especially suitable for the uneven working conditions of coal mine roadways, enabling the safe and convenient lifting and leveling of heavy formwork in confined spaces.

[0039] It should be noted that the corner groove of the caster seat 301 is provided with a slot 305, which is used to connect the clip 203 of the trailer frame 2. The connecting device 4 is a strap, and the end of the strap is connected to a strap tightener. By operating the strap tightener, the equipment can be connected into a whole. The front lifting device and the rear lifting device can flexibly match trailer frames of different sizes, and the whole device is easy to assemble and disassemble. This makes the device adaptable to different specifications and models of automatic folding formwork of 1-2 tons, improving the versatility of the equipment and its adaptability to different construction needs.

[0040] In practical applications, this solution specifically addresses the key technical challenge of safely, conveniently, and efficiently lifting, adjusting, and horizontally moving heavy-duty 1-2 ton automatic folding formwork in coal mine roadways with extremely limited space and complex floor conditions. Through innovative independent lifting modules, flexible steering mechanisms, and modular design, it significantly improves construction efficiency, safety, and equipment adaptability while reducing energy consumption and labor costs.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A heavy-duty template trailer device, characterized in that, Includes a front lifting device (1), a trailer frame (2), a rear lifting device (3), and a connecting device (4), wherein: The front lifting device (1) includes a front wheel (101), a tire axle system (102), a slewing bearing (103), a first support frame (104), a first linkage arm (105), a second linkage arm (106), a second support frame (107), and a front hydraulic jack (108). The two front wheels (101) are symmetrically installed on both sides of the tire axle system (102). The slewing bearing (103) is rotatably installed on the top of the tire axle system (102). The first support frame (104) is fixed on the upper side of the slewing bearing (103). The first support frame (104) has a first top hole, a first middle hole and a first bottom hole in sequence from top to bottom; One end of the first connecting arm (105) is connected to the first top hole of the first support frame (104) via a pivot, one end of the second connecting arm (106) is connected to the first middle hole of the first support frame (104) via a pivot, and the bottom hole of the front hydraulic jack (108) is connected to the first bottom hole of the first support frame (104) via a pivot. The second support frame (107) has a second top hole, a second upper hole and a second middle hole sequentially formed from top to bottom on its inner side; The second top hole of the second support frame (107) is connected to the other end of the first connecting rod arm (105) through a rotating shaft, the second upper hole of the second support frame (107) is connected to the top hole of the front hydraulic jack (108) through a rotating shaft, and the second middle hole of the second support frame (107) is connected to the other end of the second connecting rod arm (106) through a rotating shaft. The second support frame (107) has an outer central hole for connecting the trailer frame (2) at the outer center. The outer central hole is connected to the upper connector (201) at the front center of the trailer frame (2) through a pivot. The bottom of the second support frame (107) has an outer bottom hole for connecting the trailer frame (2). The outer bottom hole is connected to the lower connector (202) at the front bottom of the trailer frame (2) through a pivot. The two rear lifting devices (3) are respectively installed on both sides of the rear of the trailer frame (2), and a connecting device (4) is installed between the two rear lifting devices (3).

2. The heavy-duty template trailer device according to claim 1, characterized in that, The middle part of the tire axle system (102) extends outward to form a hinge joint (109). The outer end of the hinge joint (109) is connected to one end of the trailer rod (110) through a pivot. The other end of the trailer rod (110) is connected to a cross shaft (111) through a pivot. The cross shaft (111) is used to connect to the trailer.

3. The heavy-duty template trailer device according to claim 1, characterized in that, The rear lifting device (3) includes a caster seat (301), a rear hydraulic jack (302), lifting outriggers (303), and a tow wheel (304), wherein: The caster seat (301) consists of a square sleeve and a corner groove, the corner groove being used to engage the frame of the trailer frame (2); The main body of the lifting outrigger (303) is a hollow square tube. The bottom of the hollow square tube is provided with a square platform for connecting the towing wheel (304). The outer diameter of the square platform is larger than the inner diameter of the square sleeve. One end of the hollow square tube is movably set inside the square sleeve. The height of the rear hydraulic jack (302) is greater than the depth of the hollow square tube. The lower part of the rear hydraulic jack (302) is installed inside the hollow square tube. The top hole of the rear hydraulic jack (302) is fixed to the upper side of the inside of the square tube by a rotating shaft. The lifting and lowering movement of the rear hydraulic jack (302) can drive the caster seat (301) to lift and lower.

4. The heavy-duty template trailer device according to claim 3, characterized in that, The corner groove of the caster seat (301) is provided with a slot (305), which is used to connect the clip (203) of the trailer frame (2).

5. The heavy-duty template trailer device according to claim 1, characterized in that, The connecting device (4) is a strap, and the end of the strap is connected to a strap tightener.

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