Lifting device for engineering machinery offline

Abstract

The utility model provides a lifting device for engineering machinery offline, relates to the field of engineering machinery offline, and adopts the technical scheme that the lifting device comprises a box body, a driving motor is arranged in the box body, the driving motor is connected with a reversing assembly, and the reversing assembly drives a lifting driving rod to rotate and can move up and down along the lifting driving rod; the lifting driving rod can rotate around the axis of the lifting driving rod, the lifting driving rod downwards penetrates through the box body and can move relative to the box body in the vertical direction, the upper portion of the lifting driving rod is in threaded connection with a supporting column in a sleeving mode, the supporting column is connected with the box body, the supporting column is used for supporting an equipment body, and when the lifting driving rod rotates, the supporting column is connected with the box body. The supporting columns drive the box body to move up and down, and walking wheels are arranged at the bottom of the box body. The hydraulic lifting device can replace a hydraulic oil cylinder to achieve lifting without leakage and is safe and flexible to use.

Description

Technical Field

[0001] The utility model relates to the field of off-line engineering machinery, in particular to a lifting device for off-line engineering machinery. Background Technique

[0002] For engineering machinery such as bulldozers and excavators, when assembling, the main body of the equipment needs to be supported by a support rod about 80 - 100 cm above the ground to facilitate the installation of components such as traveling bogies. When all components on the main body of the equipment, such as engines, radiators, transmission systems, final drives, cabs, etc., are installed, it is necessary to rent a crane or set up a special lifting platform to lower the whole machine. This process is called off-line.

[0003] The prior art provides a lifting platform for off-line engineering machinery. The lifting platform includes two front and rear lifting platforms, which are supported by hydraulic cylinders and can provide a large lifting force, up to 40 tons at most. The lifting process is slow, stable, safe and reliable. When in use, the lifting platform needs to be raised to a suitable position to support the main body of the equipment. After the main body of the equipment is installed with components such as engines, transmission systems, and bogies, the lifting platform is lowered. According to the assembly requirements, it is lowered to the ground, or lowered to the side platform of the track chain to complete the chain installation.

[0004] Supported by hydraulic cylinders, it has the technical advantage of a large lifting force. However, due to the long assembly time of the main body of the equipment, there is a risk of leakage and potential safety hazards when the hydraulic cylinders are under pressure for a long time. And it is necessary to excavate the foundation to install the lifting platform, resulting in a fixed position and immobility, making it inflexible to use. Content of the Utility Model

[0005] In order to solve the technical problems that the lifting device for off-line engineering machinery in the above-mentioned prior art has a risk of leakage during long-term use and its position is fixed and inflexible to use, the utility model provides a lifting device for off-line engineering machinery, which can replace the hydraulic cylinder to achieve leak-free lifting, and is safe and flexible to use.

[0006] The technical solution adopted by the utility model to solve the above technical problems is: a lifting device for off-line engineering machinery, including a box body. A driving motor is arranged inside the box body. The driving motor is connected with a commutation component. The commutation component drives a lifting driving rod to rotate and can move up and down along the lifting driving rod. The lifting driving rod can rotate around its own axis. The lifting driving rod penetrates downward through the box body and can have a relative movement in the vertical direction with the box body. A support column is threadedly sleeved on the upper part of the lifting driving rod. The support column is connected with the box body. The support column is used to support the main body of the equipment. When the lifting driving rod rotates, the support column drives the box body to move up and down. Traveling wheels are arranged at the bottom of the box body.

[0007] The utility model adopts a driving motor as a power source and adopts threaded transmission to achieve lifting, replacing the hydraulic cylinder for lifting, without hydraulic oil leakage, and realizes self-locking through threaded connection, which has high safety. The flexible movement of the device is achieved through the walking wheels, and it is easy to use.

[0008] Furthermore, two of the reversing assemblies and two of the lifting drive rods are provided, and the drive motor includes two output shafts, which are respectively connected to the corresponding reversing assemblies.

[0009] Furthermore, the reversing assembly includes a meshing driving gear and a driven gear, and the driving gear and the driven gear are both bevel gears. The driving gear and the driven gear are connected by an L-shaped connecting frame, and the two ends of the connecting frame are rotatably connected to the driving gear and the driven gear respectively. The driving gear is connected to the corresponding output shaft, and the driven gear is sleeved on the lifting drive rod. The inner hole of the driven gear is provided with a keyway, and the outer circumference of the lifting drive rod is provided with a key, and the key can slide along the keyway. The outer circumference of the lifting drive rod is located at the upper part of the keyway and is provided with a lifting thread, and the lifting thread matches the internal thread of the pillar.

[0010] Furthermore, the reversing assembly includes a horizontally arranged active worm, the active worm is connected to the corresponding output shaft, the lifting drive rod is a worm, the active worm is engaged with the lifting drive rod and can move up and down along the lifting drive rod.

[0011] Furthermore, a through hole is provided at a corresponding position on the bottom of the box body, a shaft sleeve is provided in the through hole, and the shaft sleeve is clearance-matched with the lifting drive rod.

[0012] The utility model can ensure the stability of the box body's up and down movement by setting a clearance fit between the shaft sleeve and the lifting drive rod, ensure that the relative position changes of the lifting drive rod and the reversing component in their radial direction are small, and ensure smooth relative movement between the two.

[0013] Furthermore, the lower parts of the two lifting drive rods are connected through a bottom plate, and the bottom plate is located at the lower part of the box body.

[0014] The utility model can increase the contact area between the device and the ground and improve the stability of the support by providing the bottom plate.

[0015] Furthermore, a pedal is provided on the box.

[0016] The utility model is provided with a pedal to facilitate climbing up to the equipment body for assembly.

[0017] Furthermore, a protective sleeve is provided at the end of the support.

[0018] Furthermore, a traction seat is provided on the box body, and the traction seat can be connected to the traction rope.

[0019] The utility model is convenient for manual dragging of the device to move by arranging a traction seat.

[0020] Furthermore, it also includes a control module and a remote controller, the control module includes a communication unit, the communication unit is used to receive operation instructions of the remote controller, and the control module is electrically connected to the drive motor.

[0021] The utility model can realize remote control by providing a remote controller, which makes the control more convenient and improves work efficiency.

[0022] It can be seen from the above technical solutions that the present invention has the following advantages:

[0023] The utility model provides a lifting device for engineering machinery offline production line, which adopts a driving motor as a power source and adopts a screw transmission to achieve lifting, replacing the hydraulic oil cylinder for lifting, without hydraulic oil leakage, and self-locking through the screw connection, which has high safety, and the flexible movement of the device is achieved by the walking wheel, which is easy to use, and the walking wheel is lifted and lowered together with the box body and the support, so as to ensure that only the lifting driving rod is in contact with the ground during support, thereby achieving static friction, avoiding the high probability of movement of the device caused by rolling friction of the walking wheel, and avoiding the need to set a brake, which greatly reduces the cost; by setting a clearance fit between the shaft sleeve and the lifting driving rod, the stability of the box body moving up and down can be guaranteed, and the relative position change of the lifting driving rod and the reversing component in their radial direction can be guaranteed to be small, thereby ensuring smooth relative movement of the two; by setting a bottom plate, the contact area between the device and the ground can be enhanced, and the stability of the support can be improved; by setting a pedal, it is convenient to climb up to the equipment body for assembly; by setting a traction seat, it is convenient to manually drag the device to move; by setting a remote control, remote control can be achieved, which is more convenient and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the present invention, the following is a brief introduction to the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 It is a structural diagram of a specific implementation method of the utility model.

[0026] In the figure, 1. support; 2. box body; 3. walking wheel; 4. bottom plate; 5. driving motor; 6. lifting driving rod; 7. driving worm; 8. driving gear; 9. driven gear; 10. connecting frame; 11. traction seat; 12. output shaft. Detailed implementation manners

[0027] To make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below with reference to the accompanying drawings in the specific embodiments. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0028] As Figure 1 shown, this specific implementation manner provides a lifting device for off-line construction machinery, including a box body 2. A driving motor 5 is arranged in the box body 2 through bolts. The driving motor 5 is a motor reducer. The output shaft 12 of the driving motor 5 is connected with a commutation assembly. The commutation assembly drives the lifting driving rod 6 to rotate and can move up and down along the lifting driving rod 6. The lifting driving rod 6 can rotate around its own axis. The lifting driving rod 6 penetrates downward through the box body 2 and can perform relative movement in the vertical direction with the box body 2. A support column 1 is threadedly sleeved on the upper part of the lifting driving rod 6. The support column 1 is connected with the box body 2. The support column 1 is used to support the equipment main body. When the lifting driving rod 6 rotates, the support column 1 drives the box body 2 to move up and down. The driving motor 5 and the commutation assembly in the box body 2 are lifted together with the box body 2. A traveling wheel 3 is arranged at the bottom of the box body 2.

[0029] In this specific implementation manner, the driving motor 5 is adopted to replace the hydraulic cylinder as the power source, and screw drive is used to achieve lifting, replacing the hydraulic cylinder for lifting. There is no hydraulic oil leakage, and self-locking is achieved through screw connection, with relatively high safety. The flexible movement of this device is realized through the traveling wheel 3, which is convenient to use. And to avoid potential movement hazards after adopting the traveling wheel 3, this specific implementation manner creatively lifts the traveling wheel 3 together with the box body 2 and the support column 1, so as to ensure that when supporting, the lifting driving rod 6 supports on the ground, realizing static friction, avoiding the relatively high probability of movement of this device caused by the rolling friction of the traveling wheel 3, and at the same time avoiding setting a brake, greatly reducing the cost.

[0030] As Figure 1 shown, for stable support, in this specific implementation manner, two commutation assemblies and two lifting driving rods 6 are respectively provided. The driving motor 5 includes two output shafts 12, and the output shafts 12 are respectively connected with the corresponding commutation assemblies.

[0031] As Figure 1As shown, in this specific embodiment, the reversing assembly can adopt the following specific structure: the reversing assembly includes a meshing driving gear 8 and a driven gear 9, the driving gear 8 and the driven gear 9 are both bevel gears, the driving gear 8 and the driven gear 9 are connected by an L-shaped connecting frame 10, and the connecting frame 10 is provided with a ring at both ends to be rotatably connected to the shaft ends of the driving gear 8 and the driven gear 9, the driving gear 8 is connected to the corresponding output shaft 12 through a coupling, the driven gear 9 is sleeved on the lifting drive rod 6, and the inner hole of the driven gear 9 is provided with a keyway. The outer circumference of the lifting drive rod 6 is provided with a key, which can slide along the key slot. The outer circumference of the lifting drive rod 6 is located at the upper part of the key slot and is provided with a lifting thread, which matches the internal thread of the pillar 1; when the driving gear 8 rotates, the driven gear 9 drives the lifting drive rod 6 to rotate, the lifting drive rod 6 drives the pillar 1 to rise and fall, and the box body 2 drives the driving motor 5 to rise and fall accordingly, the driving motor 5 and the driving gear 8 rise and fall, and the driven gear 9 is driven to rise and fall along the lifting drive rod 6 through the connecting frame 10, and the walking wheel 3 rises and falls with the box body 2, thereby leaving or lifting the ground.

[0032] In order to ensure smooth movement between the box body 2 and the lifting drive rod 6, a through hole is provided at the corresponding position of the bottom of the box body 2, and a shaft sleeve is provided in the through hole. The shaft sleeve is clearance-matched with the lifting drive rod 6 to ensure that the relative position of the lifting drive rod 6 and the driven gear 9 and the driving gear 8 in their radial direction changes little, thereby ensuring smooth relative movement.

[0033] like Figure 1 As shown, in this specific embodiment, the lower part of the lifting drive rod 6 transfers the gravity of the equipment body to the ground or other platform. In order to enhance the supporting strength of the device, the lower parts of the two lifting drive rods 6 are connected through the bottom plate 4, and the bottom plate 4 is located at the lower part of the box body 2.

[0034] In order to facilitate the assembly of the equipment body, a pedal is provided on the box body 2, and workers can climb with the help of the pedal, which is safe and convenient; a protective cover is provided at the end of the pillar 1, and the protective cover is made of additive material to avoid scratching the equipment body.

[0035] like Figure 1 As shown, in order to save more effort, a travel motor may be included, which is connected to the corresponding travel wheel 3 through a transmission mechanism, and is also provided with a steering mechanism. The steering mechanism and the transmission mechanism are existing technologies. In this specific embodiment, in order to reduce manufacturing costs, a traction seat 11 is provided on the box body 2, and movement is achieved by manual traction during movement, and the travel wheel 3 is a universal wheel.

[0036] For convenient control, this embodiment further includes a control module and a remote controller. The control module includes a communication unit configured to receive operation instructions from the remote controller. The control module is electrically connected to the drive motor 5 .

[0037] In this specific embodiment, after the walking wheels 3 descend to contact the ground, the height of the entire device is less than the distance between the bottommost part of the device main body and the ground, facilitating the movement of this device out of the device main body after the device main body comes off the production line.

[0038] The working process of using this device is as follows:

[0039] When this device is used for support, it moves to the bottom of the device main body. The lifting drive rod 6 rotates to drive the support column 1 to rise, thereby driving the box body 2 and the walking wheels 3 to rise until the support column 1 contacts the device. At this time, the walking wheels 3 leave the ground, and the bottom plate 4 supports on the ground. When the main body assembly is completed and needs to come off the production line, the installation platforms on both sides are removed to avoid interference with the device main body. The drive motor 5 drives the lifting drive rod 6 to rotate in the reverse direction. The lifting drive rod 6 drives the support column 1 to move downward, and the box body 2 and the walking wheels 3 move downward together until reaching the lowest position of the device main body or the wheels contact the ground. Then, by continuously rotating, the support column 1 drives the box body 2 and the walking wheels 3 to move downward together until the walking wheels 3 contact the ground. The device is remotely controlled to move from inside the device main body to the outside.

[0040] It can be seen from the above specific embodiments that the utility model has the following beneficial effects:

[0041] 1. By using the drive motor 5 as the power source and adopting screw transmission to achieve lifting, replacing the hydraulic cylinder for lifting, there is no hydraulic oil leakage, and self-locking is achieved through screw connection, with relatively high safety. The flexible movement of this device is realized through the walking wheels 3, which is convenient to use. At the same time, the walking wheels 3 are lifted and lowered together with the box body 2 and the support column 1, so as to ensure that when in support, the lifting drive rod 6 supports on the ground, realizing static friction, avoiding the relatively high probability of the movement of this device caused by the rolling friction of the walking wheels 3, and avoiding the setting of brakes, greatly reducing the cost;

[0042] 2. By setting the clearance fit between the bushing and the lifting drive rod 6, the stability of the up and down movement of the box body 2 can be ensured, ensuring that the relative position change of the lifting drive rod 6 and the commutation component in its radial direction is relatively small, and ensuring the smooth relative movement between the two;

[0043] 3. By setting the bottom plate 4, the contact area between this device and the ground can be enhanced, improving the stability of support; by setting the pedal, it is convenient to climb onto the device main body for assembly;

[0044] 4. By setting the towing seat 11, it is convenient for manual dragging of this device to move;

[0045] 5. By setting the remote controller, remote control can be realized, the control is more convenient, and the work efficiency is improved.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lifting device for off-line construction machinery, comprising a box body (2), characterized in that, A drive motor (5) is arranged inside the box body (2). The drive motor (5) is connected with a commutation component. The commutation component drives the lifting drive rod (6) to rotate and can move up and down along the lifting drive rod (6). The lifting drive rod (6) can rotate around its own axis. The lifting drive rod (6) penetrates downward through the box body (2) and can perform relative movement in the vertical direction with respect to the box body (2). A support column (1) is sleeved on the upper part of the lifting drive rod (6) in a threaded manner. The support column (1) is connected with the box body (2). The support column (1) is used to support the main body of the equipment. When the lifting drive rod (6) rotates, the support column (1) drives the box body (2) to move up and down. A traveling wheel (3) is arranged at the bottom of the box body (2).

2. The lifting device for off-line construction machinery according to claim 1, characterized in that, There are two commutation components and two lifting drive rods (6) respectively. The drive motor (5) includes two output shafts (12). The output shafts (12) are respectively connected with the corresponding commutation components.

3. The lifting device for the off-line construction machinery according to claim 2, characterized in that, The commutation component includes a meshing driving gear (8) and a driven gear (9). Both the driving gear (8) and the driven gear (9) are bevel gears. The driving gear (8) and the driven gear (9) are connected through an L-shaped connecting frame (10). The two ends of the connecting frame (10) are respectively rotatably connected with the driving gear (8) and the driven gear (9). The driving gear (8) is connected with the corresponding output shaft (12). The driven gear (9) is sleeved on the lifting drive rod (6). A keyway is arranged in the inner hole of the driven gear (9). A key is arranged on the outer circumference of the lifting drive rod (6). The key can slide along the keyway. An elevating thread is arranged on the outer circumference of the lifting drive rod (6) above the keyway. The elevating thread matches the internal thread of the support column (1).

4. The lifting device for the off-line construction machinery according to claim 3, characterized in that, Through holes are arranged at corresponding positions at the bottom of the box body (2). Bushings are arranged in the through holes. The bushings are in clearance fit with the lifting drive rods (6).

5. The lifting device for off-line construction machinery according to claim 2, wherein, The lower parts of the two lifting drive rods (6) are connected through a bottom plate (4). The bottom plate (4) is located below the box body (2).

6. The lifting device for off-line construction machinery according to claim 1, characterized in that, A pedal is arranged on the box body (2).

7. The lifting device for the off-line construction machinery according to claim 6, characterized in that, A protective sleeve is arranged at the end of the support column (1).

8. The lifting device for off-line construction machinery according to claim 1, wherein, A towing seat (11) is arranged on the box body (2). The towing seat (11) can be connected with a towing rope.

9. The lifting device for the off-line construction machinery according to claim 8, wherein, It also includes a control module and a remote controller. The control module includes a communication unit. The communication unit is used to receive the operation instructions of the remote controller. The control module is electrically connected with the drive motor (5).

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