A portal baffle trolley
By using a gantry trolley with symmetrical double-sided support and motor drive, simultaneous construction on both sides of the bridge was achieved, solving the problems of insufficient stability and low efficiency of single-sided trolleys, and improving construction efficiency and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO10 ENGINEERING GROUP THIRD CONSTRUCTION CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-07-21
AI Technical Summary
Existing gantry trolleys are not stable enough when supporting one side, are prone to overturning, and have low construction efficiency. They are especially risky in strong winds or vibration environments, and require two moves to complete the installation of formwork on both sides of the bridge.
A gantry trolley with symmetrical double-sided support was designed, which allows for simultaneous construction on both sides of the bridge. The combined structure of crossbeams and lifting platforms achieves uniform load distribution. The movement of rollers is driven by a motor, and the coordinated operation of the lifting platform and the construction platform reduces the number of moves and improves construction efficiency.
It improves construction stability, reduces the risk of overturning, and allows the formwork installation on both sides of the bridge to be completed in a single move, significantly improving construction efficiency.
Smart Images
Figure CN224531447U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of railway bridge construction technology, specifically to a gantry-type baffle trolley. Background Technology
[0002] A gantry crane is a device used for auxiliary operations on the beam surface of railway and municipal bridges. Most gantry cranes currently used are single-sided cranes. A single-sided crane includes a car body and a lifting platform set on one side of the car body and connected to the car body. Construction workers start the motor, which drives the car body to move along one side of the bridge. Once it reaches the construction site, the lifting platform is lowered from one side of the bridge, and the construction workers stand on the lifting platform to carry out construction on one side of the bridge. Since the single-sided trolley only supports the working load on one side, it is prone to insufficient overall stability due to the shift of the center of gravity, and may overturn in strong winds or vibration environments. At the same time, after completing the work on one side, the single-sided trolley needs to be returned to the starting point and then moved to the other side of the bridge for construction, which results in low construction efficiency. Utility Model Content
[0003] This utility model provides a gantry baffle trolley that can overcome some or more defects of the prior art.
[0004] According to the present invention, a gantry-type baffle trolley includes: a main body, the main body including a crossbeam arranged along the width direction of the bridge, a traveling frame for supporting the crossbeam below the crossbeam; a first driving device for driving the traveling frame to move at the traveling frame; lifting platforms at both ends of the crossbeam, the lifting platforms including crossbars arranged along the length direction of the bridge, a construction platform below the crossbars, and a second driving device for driving the construction platform to rise or fall between the crossbars and the construction platform.
[0005] With this invention, when construction workers are building the crash barriers on both sides of a bridge, they first start the first motor on the gantry crane. The first motor drives the rollers to rotate, thereby driving the gantry crane onto the bridge deck. Then, the construction workers enter the lifting platforms at both ends of the crossbeam. The lifting machine lowers the construction platform to the designated position by raising and lowering the ropes. Then, the construction workers on the bridge deck and the construction workers in the lifting platforms work together to fix the pouring templates of the crash barriers on both sides of the bridge. As the gantry crane moves, the construction workers install and fix the templates on both sides of the bridge in sequence until all templates are installed. Compared with the prior art, this gantry crane allows for simultaneous construction on both sides of the bridge. A single-sided crane needs to move to the other side to assist in the installation of templates after the templates on one side of the bridge are installed, which is time-consuming. However, a double-sided crane only needs to move once to complete the template installation, improving construction efficiency. The symmetrical support on both sides ensures even load distribution and reduces the risk of overturning.
[0006] Preferably, the traveling frame includes two support frames, each including a base arranged along the length of the bridge, and two inclined support feet between the base and the crossbeam, with each end of the support foot connected to the base and the crossbeam respectively; rollers are provided below the base, and the first driving device includes a first motor located at the base for driving the rollers to rotate.
[0007] With this invention, when installing the traveling frame, the installer first installs two support frames. To install the support frames, a crane is used to lift the crossbeam and support legs. Then, the installer uses a ladder truck to connect the upper end of the support legs to the connecting plate on the crossbeam. The lower end of the support legs is connected to the base by the installer on the ground. During connection, bolts are passed through pre-drilled holes in the base and connecting plate, and the bolts are used to secure the support legs. Next, the base of the first motor is fixed to the base, and the wiring is connected to the rollers. The first motor is started via the controller, driving the rollers to rotate, thus facilitating the movement of the gantry trolley.
[0008] Preferably, the lifting platform includes a crossbar arranged along the length of the bridge, an inclined brace between the crossbar and the crossbeam, one end of the inclined brace being connected to the crossbeam and the other end being connected to the crossbar; fixed pulleys are provided at both ends of the crossbar, a support platform is provided below the crossbar, and a hoist is provided at both ends of the support platform; a rope passing through the fixed pulley and the hoist is provided between the hoist and the fixed pulley.
[0009] With this invention, after the support legs are installed, the installers place the crossbar on top of the crossbeam, and then connect the diagonal bracing rod on the crossbeam to the crossbeam by welding, thereby fixing the crossbar. Then, the construction platform is lifted by a crane, the installers pass the rope through the fixed pulley, and finally the construction platform is lowered to complete the assembly of the gantry trolley. The construction workers can freely raise and lower the rope through the hoist on the construction platform to adjust the height of the construction platform, which is convenient for the construction workers to install the template.
[0010] Preferably, the crossbeam includes a main beam, with a reinforcing beam connected to the main beam above it; and a sliding beam connected to the main beam and having a T-shaped cross-section is provided below it.
[0011] This invention provides a reinforcing beam to enhance the overall structural strength of the main beam.
[0012] Preferably, a winch is provided below the sliding beam, and a sliding seat connected to the winch is provided between the winch and the sliding beam. The upper end of the sliding seat is recessed downward to form a groove for the sliding beam to extend into. A pulley extending towards the sliding beam is provided on the inner side wall of the groove. A second motor for driving the pulley to rotate is provided on the outer side wall of the sliding seat.
[0013] With this utility model, after the template is installed, the construction workers will pour concrete into the template. After the concrete solidifies, the template needs to be dismantled. During dismantling, the construction workers can move the sliding seat by driving the second motor and lift the template by the winch, thereby assisting the construction workers in dismantling the template. When installing the template, the winch can also be used to lift the template and transport it to both ends of the gantry trolley to assist the construction workers in installing the template.
[0014] Preferably, the base has limiting blocks with triangular cross-sections at both ends, and a chain is provided between the limiting blocks and the base to connect the limiting blocks and the base.
[0015] With this invention, during the template installation process, the gantry trolley needs to stop after moving a certain distance to assist construction workers in installing the template. When the gantry trolley stops, the construction workers need to remove the limiting block from the base and place the limiting block against the roller to prevent the roller from moving further, ensuring that the gantry trolley is stationary and avoiding affecting the construction workers' work.
[0016] The limiting block is welded together from a base plate, triangular side plates, and a top plate.
[0017] Preferably, the main beam is provided with connecting plates on both sides for connecting the main beam and the support legs.
[0018] In this invention, a connecting plate is used to connect the support feet. The connecting plate creates a gap between the support feet and the sliding beam, thereby preventing the sliding seat from being blocked by the support feet when it moves, which would prevent the sliding seat from moving to both ends of the gantry trolley. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the main body of the device in Example 1.
[0020] Figure 2 This is a schematic diagram of the crossbeam in Example 1.
[0021] Figure 3 This is a schematic diagram of the fit between the support foot and the base in Example 1.
[0022] Figure 4 This is a schematic diagram of the lifting platform in Example 1.
[0023] Figure 5 This is a schematic diagram of the limiting block in Example 1.
[0024] Figure 6 This is a schematic diagram of the winch in Example 1. Detailed Implementation
[0025] To further understand the content of this utility model, a detailed description of the utility model is provided in conjunction with the embodiments. It should be understood that the embodiments are merely illustrative and not limiting of the utility model.
[0026] Example 1 like Figure 1-6 As shown, this embodiment provides a gantry-type baffle trolley, including a device body 100. The device body 100 includes a crossbeam 200 arranged along the width direction of the bridge. A traveling frame 130 for supporting the crossbeam 200 is provided below the crossbeam 200. A first driving device for driving the traveling frame 130 to move is provided at the traveling frame 130. Lifting platforms 110 are provided at both ends of the crossbeam 200. The lifting platform 110 includes a crossbar 420 arranged along the length direction of the bridge. A construction platform 450 is provided below the crossbar 420. A second driving device for driving the construction platform 450 to rise or fall is provided between the crossbar 420 and the construction platform 450.
[0027] In this embodiment, when construction workers are building the crash barriers on both sides of the bridge, they first start the first motor 120 on the gantry crane. The first motor 120 drives the roller 150 to rotate, thereby driving the gantry crane onto the bridge deck. Then, the construction workers enter the lifting platforms 110 at both ends of the crossbeam 200. The hoist 440 raises and lowers the construction platform 450 to the designated position. Then, the construction workers on the bridge deck and the construction workers in the lifting platforms 110 work together to fix the casting templates of the crash barriers on both sides of the bridge. As the gantry crane moves, the construction workers install and fix the templates on both sides of the bridge in sequence until all templates are installed. Compared with the prior art, this gantry crane allows for simultaneous construction on both sides of the bridge. A single-sided crane needs to move to the other side to assist in the installation of templates after the templates on one side of the bridge are installed, which is time-consuming. However, a double-sided crane only needs to move once to complete the template installation, improving construction efficiency. The symmetrical support on both sides ensures even load distribution and reduces the risk of overturning.
[0028] In this embodiment, the walking frame 130 includes two support frames. Each support frame includes a base 320 arranged along the length of the bridge. Two inclined support feet 310 are provided between the base 320 and the crossbeam 200. The two ends of the support feet 310 are connected to the base 320 and the crossbeam 200, respectively. A roller 150 is provided below the base 320. The first driving device includes a first motor 120 disposed at the base 320 and used to drive the roller 150 to rotate.
[0029] In this embodiment, when installing the traveling frame 130, the installer first installs two support frames. During installation, the crossbeam 200 and support legs 310 are first lifted by a crane. Then, the installer uses a ladder truck to connect the upper end of the support leg 310 to the connecting plate 210 on the crossbeam 200. The lower end of the support leg 310 is connected to the base 320 by the installer on the ground. During connection, bolts are passed through pre-drilled holes in the base 320 and connecting plate 210, and the support leg 310 is secured with bolts. Next, the base of the first motor 120 is fixed to the base 320, and the wiring is connected to the rollers 150. The controller starts the first motor 120, driving the rollers 150 to rotate, thus facilitating the movement of the gantry trolley.
[0030] In this embodiment, the lifting platform 110 includes a crossbar 420 arranged along the length of the bridge. An inclined brace 410 is provided between the crossbar 420 and the crossbeam 200. One end of the inclined brace 410 is connected to the crossbeam 200, and the other end is connected to the crossbar 420. Fixed pulleys 430 are provided at both ends of the crossbar 420. A support platform is provided below the crossbar 420. A hoist 440 is provided at both ends of the support platform. A rope passing through the fixed pulley 430 and the hoist 440 is provided between the hoist 440 and the fixed pulley 430.
[0031] In this embodiment, after the support leg 310 is installed, the installer places the crossbar 420 above the crossbeam 200, and then connects the diagonal brace 410 on the crossbeam 200 to the crossbeam 200 by welding, thereby fixing the crossbar 420. Then, the construction platform 450 is lifted by a crane, and the installer passes the rope through the fixed pulley 430. Finally, the construction platform 450 is lowered to complete the assembly of the gantry trolley. The construction workers can freely raise and lower the rope through the hoist 440 on the construction platform 450 to adjust the height of the construction platform 450, which is convenient for the construction workers to install the template.
[0032] In this embodiment, the crossbeam 200 includes a main beam 260, a reinforcing beam 270 connected to the main beam 260 is provided above the main beam 260, and a sliding beam 250 connected to the main beam 260 and having a T-shaped cross-section is provided below the main beam 260.
[0033] In this embodiment, the reinforcing beam 270 is used to improve the overall structural strength of the main beam 260.
[0034] In this embodiment, a winch 220 is provided below the sliding beam 250, and a sliding seat 230 connected to the winch 220 is provided between the winch 220 and the sliding beam 250. The upper end of the sliding seat 230 is recessed downward to form a groove 610 for the sliding beam 250 to extend into. A pulley 620 extending towards the sliding beam 250 is provided on the inner side wall of the groove 610. A second motor 240 for driving the pulley 620 to rotate is provided on the outer side wall of the sliding seat 230.
[0035] In this embodiment, after the template is installed, the construction workers will pour concrete into the template. After the concrete solidifies, the template needs to be dismantled. During dismantling, the construction workers can use the second motor 240 to drive the sliding seat 230 to move, and use the winch 220 to lift the template, thereby assisting the construction workers in dismantling the template. When installing the template, the winch 220 can also be used to lift the template and transport it to both ends of the gantry trolley to assist the construction workers in installing the template.
[0036] In this embodiment, the base 320 is provided with limiting blocks 140 with triangular cross-section at both ends, and a chain 330 is provided between the limiting blocks 140 and the base 320. The chain 330 is used to connect the limiting blocks 140 and the base 320.
[0037] In this embodiment, during the template installation process, the gantry trolley needs to stop after moving a certain distance to assist the construction workers in installing the template. When the gantry trolley stops, the construction workers need to remove the limiting block 140 from the base 320 and place the limiting block 140 against the roller 150 to prevent the roller 150 from continuing to move, ensuring that the gantry trolley is stationary and avoiding affecting the construction workers' work.
[0038] The limiting block 140 is welded together from the base plate 530, the triangular side plate 510 and the top plate.
[0039] In this embodiment, connecting plates 210 are provided on both sides of the main beam 260 for connecting the main beam 260 and the support legs 310.
[0040] In this embodiment, the connecting plate 210 is used to connect the support foot 310. The connecting plate 210 creates a gap between the support foot 310 and the sliding beam 250, thereby preventing the sliding seat 230 from being blocked by the support foot 310 when it moves, which would prevent the sliding seat 230 from moving to both ends of the gantry baffle trolley.
[0041] It is readily understood that those skilled in the art can combine, split, or reorganize the embodiments provided in this application to obtain other embodiments, all of which do not exceed the protection scope of this application.
[0042] The present invention and its embodiments have been described above illustratively. This description is not restrictive, and the embodiments shown are only part of the embodiments of the present invention. The actual structure is not limited to this. Therefore, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.
Claims
1. A gantry-type baffle trolley, characterized in that: The device includes a main body (100), which includes a crossbeam (200) arranged along the width of the bridge. A traveling frame (130) is provided below the crossbeam (200) to support the crossbeam (200). A first driving device is provided at the traveling frame (130) to drive the traveling frame (130) to move. Lifting platforms (110) are provided at both ends of the crossbeam (200). The lifting platform (110) includes a crossbar (420) arranged along the length of the bridge. A construction platform (450) is provided below the crossbar (420). A second driving device is provided between the crossbar (420) and the construction platform (450) to drive the construction platform (450) to rise or fall.
2. The gantry-type baffle trolley according to claim 1, characterized in that: The traveling frame (130) includes two support frames. Each support frame includes a base (320) arranged along the length of the bridge. Two inclined support feet (310) are provided between the base (320) and the crossbeam (200). The two ends of the support feet (310) are connected to the base (320) and the crossbeam (200) respectively. A roller (150) is provided below the base (320). The first driving device includes a first motor (120) located at the base (320) and used to drive the roller (150) to rotate.
3. A gantry baffle trolley according to claim 2, characterized in that: The lifting platform (110) includes a crossbar (420) arranged along the length of the bridge. An inclined brace (410) is provided between the crossbar (420) and the crossbeam (200). One end of the brace (410) is connected to the crossbeam (200), and the other end is connected to the crossbar (420). Fixed pulleys (430) are provided at both ends of the crossbar (420). A support platform is provided below the crossbar (420). A hoist (440) is provided at both ends of the support platform. A rope passing through the fixed pulley (430) and the hoist (440) is provided between the hoist (440) and the fixed pulley (430).
4. A gantry baffle trolley according to claim 3, characterized in that: The crossbeam (200) includes a main beam (260), a reinforcing beam (270) connected to the main beam (260) is provided above the main beam (260), and a sliding beam (250) connected to the main beam (260) and having a T-shaped cross section is provided below the main beam (260).
5. A gantry baffle trolley according to claim 4, characterized in that: A winch (220) is provided below the sliding beam (250). A sliding seat (230) connected to the winch (220) is provided between the winch (220) and the sliding beam (250). The upper end of the sliding seat (230) is recessed downward to form a slot (610) into which the sliding beam (250) extends. A pulley (620) extending towards the sliding beam (250) is provided on the inner side wall of the slot (610). A second motor (240) for driving the pulley (620) to rotate is provided on the outer side wall of the sliding seat (230).
6. A gantry baffle trolley according to claim 2, characterized in that: The base (320) has a limiting block (140) with a triangular cross-section at both ends. A chain (330) is provided between the limiting block (140) and the base (320). The chain (330) is used to connect the limiting block (140) and the base (320).
7. A gantry baffle trolley according to claim 2, characterized in that: The main beam (260) has connecting plates (210) on both sides for connecting the main beam (260) and the support foot (310).