A board lifting device for a floating board

Abstract

A kind of plate lifting device for floating plate, including drive motor and multiple plate lifting assemblies, multiple plate lifting assemblies are distributed in the four around of floating plate, plate lifting assembly includes lifting lug, hydraulic jack, drive mechanism, synchronous belt transmission mechanism, the input end of multiple synchronous belt transmission mechanisms is sequentially set on the output shaft of drive motor, the input end of drive mechanism is connected with the output end of synchronous belt transmission mechanism, and the output end is connected with the hydraulic rod of hydraulic jack, lifting lug is installed on the side of floating plate and is located above the jacking end of hydraulic jack.In the design, multiple hydraulic jacks are driven to work by drive mechanism, and the driving force of drive motor is transmitted to drive mechanism through synchronous belt transmission mechanism, so that multiple drive mechanisms can be driven to work synchronously by one drive motor, so that the jacking height of each hydraulic jack remains consistent, and the floating plate can always be kept in horizontal state to move, avoiding the occurrence of floating plate bumping rail table.

Description

Technical Field

[0001] This utility model relates to the field of track construction equipment technology, and in particular to a lifting device for floating slabs. Background Technology

[0002] As an important component of railway lines, the track is an integral engineering structure, consisting of major components such as rails, sleepers, connecting parts, ballast bed, anti-creep devices, and turnouts.

[0003] The track bed in a railway is generally composed of multiple floating slabs connected together. The floating slab track bed is usually constructed using a prefabrication and installation method. This involves first installing the bottom and side forms, then installing the reinforcing cage and pouring concrete. After the pouring is completed and the concrete reaches the design strength, the floating slabs are demolded. During demolding, the side forms are first opened, and then the floating slabs are lifted a certain distance using jacks. Then, a gantry crane is used to lift the floating slabs. During the demolding process, because the jacking process is operated manually, there is a possibility that the four jacks are not synchronized. This makes the floating slabs unstable during the lifting process and prone to damaging the rail support platform, thus affecting the service life of the equipment. Summary of the Invention

[0004] The purpose of this invention is to overcome the defects and problems of unstable lifting of the plate in the existing technology, and to provide a lifting device for floating plates with stable lifting.

[0005] To achieve the above objectives, the technical solution of this utility model is: a lifting device for a floating slab, comprising a drive motor and multiple lifting assemblies, wherein the multiple lifting assemblies are evenly distributed around the floating slab, and each lifting assembly includes a lifting lug, a hydraulic jack, a drive mechanism, and a synchronous belt transmission mechanism. The input ends of the multiple synchronous belt transmission mechanisms are sequentially sleeved on the output shaft of the drive motor, and the output ends of the synchronous belt transmission mechanisms are connected to the input ends of the drive mechanism. The output ends of the drive mechanism are connected to the hydraulic rod end of the hydraulic jack, and the lifting lug is installed on the side of the floating slab and located above the lifting end of the hydraulic jack.

[0006] Each of the synchronous belt conveyor mechanisms includes a driving gear, a synchronous belt, a driven gear, a support rod, a rotating seat, and a drive gear. Multiple driving gears are sequentially mounted on the output shaft of the drive motor from top to bottom. The support rod is arranged vertically and rotatably connected to the upper side of the rotating seat. The driven gear and drive gear are respectively mounted on the support rod. The synchronous belt is wound around the outer circumference of the driving gear and the driven gear. The input end of the drive mechanism is meshed with the drive gear.

[0007] The output shaft of the drive motor is fitted with an upper limit plate and a lower limit plate from top to bottom. Multiple drive gears are located between the upper limit plate and the lower limit plate. A limit block is connected between two adjacent drive gears. The limit block is fitted onto the output shaft of the drive motor.

[0008] The heights of the multiple drive gears are the same.

[0009] The drive mechanism includes a vertical gear, a mounting plate, a rotating shaft, a reciprocating linear motion mechanism, and a drive rod. The mounting plate is vertically arranged, the rotating shaft is horizontally arranged and rotatably connected to the mounting plate, the vertical gear is connected to one end of the rotating shaft and meshes with the drive gear, the input end of the reciprocating linear motion mechanism is connected to the other end of the rotating shaft, the drive rod is slidably connected to the mounting plate vertically, one end of the drive rod is connected to the output end of the reciprocating linear motion mechanism, and the other end of the drive rod is connected to the hydraulic rod end of the hydraulic jack.

[0010] The reciprocating linear motion mechanism includes a rocker arm and a connecting rod. One end of the rocker arm is connected to the other end of the rotating shaft, one end of the connecting rod is hinged to the other end of the rocker arm, and the other end of the connecting rod is hinged to one end of the drive rod.

[0011] One end of the drive rod is connected to an end cap, and a connecting shaft is rotatably connected inside the end cap. One end of the connecting shaft is connected to the other end of the connecting rod.

[0012] Multiple clamping plates are connected to the outer side of the other end of the drive rod, and bolts are threaded onto the multiple clamping plates. The bottom of the bolts abuts against the outer periphery of the hydraulic rod.

[0013] A support column is connected to one side of the mounting plate, and a collar is connected to one end of the support column. The drive rod is slidably connected inside the collar.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] 1. In this utility model, a lifting device for a floating slab utilizes multiple hydraulic jacks driven by a drive mechanism. Simultaneously, the driving force of the drive motor is transmitted to the drive mechanism via a synchronous belt transmission mechanism. Thus, a single drive motor can drive multiple drive mechanisms to work synchronously, ensuring that the lifting height of each hydraulic jack remains consistent. This allows the floating slab to remain horizontal during movement, preventing it from colliding with the rail support platform. Therefore, the lifting process of this utility model is stable.

[0016] 2. In this utility model, a lifting device for floating slabs utilizes a gear transmission connection. Since the driving gears are all mounted on the output shaft of the drive motor, each driving gear rotates at the same angle during operation, resulting in uniform motion of the drive mechanism. This effectively ensures synchronous lifting of the hydraulic jacks and allows for control of the lifting rate. Different lifting heights can be set for different types of floating slabs, adapting to various slab shapes. By setting limit plates and limit blocks, the vertical movement of the driving gears is limited, preventing vertical movement during rotation and ensuring a relatively stable lifting process. Therefore, this utility model offers a stable lifting process and has a wide range of applications.

[0017] 3. In this utility model, a lifting device for a floating slab utilizes a drive mechanism consisting of a vertical gear, a rocker arm, and a connecting rod. The vertical gear provides rotational force, which is then converted into reciprocating linear motion via the rocker arm and connecting rod. This simulates the manual lifting and lowering of a handle, making operation convenient. A threaded connection is used to link the drive rod and the hydraulic rod, facilitating installation and disassembly, and ensuring a relatively secure connection. Therefore, this utility model offers high reliability, ease of use, and stable lifting process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the drive motor and lifting plate assembly in this utility model.

[0020] Figure 3 This is a structural schematic diagram of the lifting plate assembly in this utility model.

[0021] Figure 4 This is a schematic diagram of the drive motor in this utility model.

[0022] Figure 5 This is a schematic diagram of the drive motor and synchronous belt transmission mechanism in this utility model.

[0023] Figure 6 This is a schematic diagram of the drive mechanism in this utility model.

[0024] In the diagram: Floating plate 1, bottom mold 2, drive motor 3, lifting plate assembly 4, lifting lug 41, hydraulic jack 42, synchronous belt transmission mechanism 43, driving gear 431, synchronous belt 432, driven gear 433, support rod 434, rotating seat 435, drive gear 436, drive mechanism 44, vertical gear 440, mounting plate 441, rotating shaft 442, drive rod 443, end 444, connecting shaft 445, clamping plate 446, bolt 447, support column 448, collar 449, reciprocating linear motion mechanism 45, rocker arm 451, connecting rod 452, upper limit plate 5, lower limit plate 6, limit block 7. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] Example 1:

[0027] See Figures 1 to 6 A lifting device for a floating slab includes a drive motor 3 and multiple lifting assemblies 4. The multiple lifting assemblies 4 are evenly distributed around the floating slab 1. Each lifting assembly 4 includes a lifting lug 41, a hydraulic jack 42, a drive mechanism 44, and a synchronous belt transmission mechanism 43. The input ends of the multiple synchronous belt transmission mechanisms 43 are sequentially sleeved on the output shaft of the drive motor 3. The output ends of the synchronous belt transmission mechanisms 43 are connected to the input ends of the drive mechanism 44. The output ends of the drive mechanism 44 are connected to the hydraulic rod end of the hydraulic jack 42. The lifting lug 41 is installed on the side of the floating slab 1 and is located above the lifting end of the hydraulic jack 42.

[0028] In this embodiment, there are four lifting plate components 4. The structure and principle of the hydraulic jack 42 can be referred to a detachable two-section piston rod manual hydraulic jack disclosed in Chinese Patent CN2063119U. Before lifting the plate, the floating plate 1 is placed on the bottom mold 2. First, the side mold is removed, and then the fixing bolts on the bottom mold 2 are removed. After all the bolts are removed, four lifting lugs 41 are inserted into the floating plate 1. Then, the hydraulic jack 42 is aligned with the lifting lugs 41 and the drive motor 3 works. The driving force of the drive motor 3 is synchronously transmitted to four drive mechanisms 44 through four synchronous belt transmission mechanisms 43. The drive mechanism 44 drives the hydraulic rod of the hydraulic jack 42 to move continuously, so that the lifting end of the hydraulic jack 42 is lifted upward until it contacts the lifting lugs 41 and drives the floating plate 1 to move upward.

[0029] Example 2:

[0030] The basic content is the same as in Example 1, except that:

[0031] See Figure 3 and Figure 5Each of the synchronous belt conveying mechanisms 43 includes a driving gear 431, a synchronous belt 432, a driven gear 433, a support rod 434, a rotating seat 435, and a drive gear 436. The multiple driving gears 431 are sequentially sleeved on the output shaft of the drive motor 3 from top to bottom. The support rod 434 is arranged vertically and rotatably connected to the upper side of the rotating seat 435. The driven gear 433 and the drive gear 436 are respectively sleeved on the support rod 434. The synchronous belt 432 is wound around the outer circumference of the driving gear 431 and the driven gear 433. The input end of the drive mechanism 44 is meshed with the drive gear 436. The multiple drive gears 436 have the same height.

[0032] In this embodiment, each drive gear 431 has the same size, and the position of the support rod 434 can be adjusted according to the actual working conditions. The driven gear 433, drive gear 436 and drive gear 431 have the same size. In this way, no matter where the hydraulic jack 42 is, the rotation angle of each drive gear 436 is the same, so that the drive mechanism 44 can work synchronously and drive the hydraulic jack 42 to lift synchronously.

[0033] Example 3:

[0034] The basic content is the same as Example 2, except that:

[0035] See Figure 4 The output shaft of the drive motor 3 is fitted with an upper limit plate 5 and a lower limit plate 6 from top to bottom. Multiple drive gears 431 are located between the upper limit plate 5 and the lower limit plate 6. A limit block 7 is connected between two adjacent drive gears 431. The limit block 7 is fitted on the output shaft of the drive motor 3.

[0036] In this embodiment, the spacing between each drive gear 431 can be adjusted according to the actual working conditions. Before lifting the plate, if the output shaft of the drive motor 3 is short, a coupling and an extension shaft can be added to the output shaft of the drive motor 3. The lower limit plate 6 is installed on the extension shaft, and then the drive gear 431 and the limit block 7 are placed in sequence. Finally, the upper limit block 5 is installed on the end of the extension shaft.

[0037] Example 4:

[0038] The basic content is the same as Example 2, except that:

[0039] See Figure 6The drive mechanism 44 includes a vertical gear 440, a mounting plate 441, a rotating shaft 442, a reciprocating linear motion mechanism 45, and a drive rod 443. The mounting plate 441 is vertically arranged, the rotating shaft 442 is horizontally arranged and rotatably connected to the mounting plate 441, the vertical gear 440 is connected to one end of the rotating shaft 442 and meshes with the drive gear 436, the input end of the reciprocating linear motion mechanism 45 is connected to the other end of the rotating shaft 442, the drive rod 443 is slidably connected to the mounting plate 441 vertically, one end of the drive rod 443 is connected to the output end of the reciprocating linear motion mechanism 45, and the other end of the drive rod 443 is connected to the hydraulic rod end of the hydraulic jack 42.

[0040] The reciprocating linear motion mechanism 45 includes a rocker arm 451 and a connecting rod 452. One end of the rocker arm 451 is connected to the other end of the rotating shaft 442, one end of the connecting rod 452 is hinged to the other end of the rocker arm 451, and the other end of the connecting rod 452 is hinged to one end of the drive rod 443.

[0041] In this embodiment, the horizontal rotational force is converted into a vertical rotational force by meshing with the vertical gear 440 and the drive gear 436. Then, the rocker arm 451 is driven to make a circular motion through the rotating shaft 442. The rocker arm 451 drives the connecting rod 452 to swing back and forth, thereby driving the drive rod 443 to move up and down reciprocally.

[0042] Example 5:

[0043] The basic content is the same as Example 4, except that:

[0044] See Figure 6 One end of the drive rod 443 is connected to an end head 444, and a connecting shaft 445 is rotatably connected inside the end head 444. One end of the connecting shaft 445 is connected to the other end of the connecting rod 452.

[0045] Multiple clamping plates 446 are connected to the outer side of the other end of the drive rod 443. Bolts 447 are threaded onto the multiple clamping plates 446, and the bottom of the bolts 447 abuts against the outer periphery of the hydraulic rod of the hydraulic jack 42.

[0046] A support column 448 is connected to one side of the mounting plate 441, and a collar 449 is connected to one end of the support column 448. The drive rod 443 is slidably connected to the collar 449.

[0047] In this embodiment, the drive rod 443 is first aligned with the hydraulic rod, and then the bolt 447 is tightened so that the bolt 447 abuts against the outer periphery of the hydraulic rod. A rib can be provided between the support column 448 and the mounting plate 441. A plug rod can be provided at the other end of the rocker arm 451. Mounting holes are provided at both ends of the connecting rod 452. One mounting hole is connected to the plug rod, and the other mounting hole is connected to the connecting shaft 445.

Claims

1. A lifting device for a floating slab, characterized in that: The system includes a drive motor (3) and multiple lifting assemblies (4). The multiple lifting assemblies (4) are evenly distributed around the floating plate (1). Each lifting assembly (4) includes a lifting lug (41), a hydraulic jack (42), a drive mechanism (44), and a synchronous belt transmission mechanism (43). The input ends of the multiple synchronous belt transmission mechanisms (43) are sequentially sleeved on the output shaft of the drive motor (3). The output ends of the synchronous belt transmission mechanisms (43) are connected to the input ends of the drive mechanism (44). The output ends of the drive mechanism (44) are connected to the hydraulic rod end of the hydraulic jack (42). The lifting lug (41) is installed on the side of the floating plate (1) and located above the lifting end of the hydraulic jack (42). Each of the synchronous belt conveyor mechanisms (43) includes a driving gear (431), a synchronous belt (432), a driven gear (433), a support rod (434), a rotating seat (435), and a drive gear (436). Multiple driving gears (431) are sequentially sleeved on the output shaft of the drive motor (3) from top to bottom. The support rod (434) is arranged vertically and rotatably connected to the upper side of the rotating seat (435). The driven gear (433) and the drive gear (436) are respectively sleeved on the support rod (434). The synchronous belt (432) is wound around the outer circumference of the driving gear (431) and the driven gear (433). The input end of the drive mechanism (44) is meshed with the drive gear (436). The drive mechanism (44) includes a vertical gear (440), a mounting plate (441), a rotating shaft (442), a reciprocating linear motion mechanism (45), and a drive rod (443). The mounting plate (441) is arranged vertically, the rotating shaft (442) is arranged horizontally and rotatably connected to the mounting plate (441), the vertical gear (440) is connected to one end of the rotating shaft (442) and meshes with the drive gear (436), the input end of the reciprocating linear motion mechanism (45) is connected to the other end of the rotating shaft (442), the drive rod (443) is slidably connected to the mounting plate (441) in the vertical direction, one end of the drive rod (443) is connected to the output end of the reciprocating linear motion mechanism (45), and the other end of the drive rod (443) is connected to the hydraulic rod end of the hydraulic jack (42).

2. The lifting device for a floating slab according to claim 1, characterized in that: The output shaft of the drive motor (3) is fitted with an upper limit plate (5) and a lower limit plate (6) from top to bottom. Multiple drive gears (431) are located between the upper limit plate (5) and the lower limit plate (6). A limit block (7) is connected between two adjacent drive gears (431). The limit block (7) is fitted on the output shaft of the drive motor (3).

3. A lifting device for a floating slab according to claim 1, characterized in that: The height of the multiple drive gears (436) is the same.

4. A lifting device for a floating slab according to claim 1, characterized in that: The reciprocating linear motion mechanism (45) includes a rocker arm (451) and a connecting rod (452). One end of the rocker arm (451) is connected to the other end of the rotating shaft (442). One end of the connecting rod (452) is hinged to the other end of the rocker arm (451), and the other end of the connecting rod (452) is hinged to one end of the drive rod (443).

5. A lifting device for a floating slab according to claim 4, characterized in that: One end of the drive rod (443) is connected to an end head (444), and a connecting shaft (445) is rotatably connected inside the end head (444). One end of the connecting shaft (445) is connected to the other end of the connecting rod (452).

6. A lifting device for a floating slab according to claim 1, characterized in that: Multiple clamping plates (446) are connected to the outer side of the other end of the drive rod (443), and bolts (447) are threaded onto the multiple clamping plates (446). The bottom of the bolts (447) abuts against the outer periphery of the hydraulic rod of the hydraulic jack (42).

7. A lifting device for a floating slab according to claim 1, characterized in that: A support column (448) is connected to one side of the mounting plate (441), and a collar (449) is connected to one end of the support column (448). The drive rod (443) is slidably connected inside the collar (449).

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