A longitudinally movable trolley with switchable travel system and application method thereof

Abstract

The present invention relates to a longitudinally movable trolley with a switchable running system and an application method, comprising two sets of independent and different running systems, namely a leg support mechanism and a trolley mechanism. The leg support mechanism serves as a guiding structure for the longitudinal movement of the trolley mechanism: the leg support mechanism is composed of a leg guide column, a leg guide sleeve, a leg lifting hydraulic cylinder, a leg horizontal push-pull hydraulic cylinder, a leg horizontal guide sleeve, a leg horizontal guide column, and a longitudinal guide column beam; the trolley mechanism is composed of a trolley frame, a driving wheel group, a driven wheel group driving a running motor, a transmission gear, a retractable guide sleeve guide column, a rotating device, a crawler track assembly, a lifting and retracting hydraulic cylinder, and a trolley push-pull hydraulic cylinder. The present invention adopts two sets of independent and different running systems, which are not restricted by running rails. The two sets of independent and different running systems can be switched freely and do not affect each other.

Description

Technical Field

[0001] The invention belongs to engineering technology science and relates to the track construction design and use method of urban rail transit engineering. Background Art

[0002] At present, the construction of urban rail transit in my country involves some lifting equipment for hoisting and the transportation of some small components. Due to the limitations of the construction environment and complex working conditions, large machinery cannot enter the construction site. Therefore, we often manufacture some special machinery to meet the construction needs. The running system of these equipments is single, the structure is simple, and they are highly limited. Summary of the invention

[0003] The purpose of the present invention is to design a new structure, in which the entire running system has two independent running devices of steel wheel group and crawler track and four outrigger devices, and can be switched and lifted to cross obstacles as needed. The steel wheel group runs on the laid main line rail, and there is no need to lay temporary auxiliary running rails. The crawler track has been wrapped with rubber and can run directly on the structural surface in the construction area.

[0004] In order to achieve the above purpose, a longitudinal moving trolley with a switchable running system is designed, which is characterized by comprising two independent and different running systems, namely, a leg support mechanism 1 and a trolley mechanism 2. The leg support mechanism 1 serves as a guide structure for the longitudinal movement of the trolley mechanism 2:

[0005] The outrigger support mechanism 1 is composed of an outrigger guide column 1-1, an outrigger guide sleeve 1-2, an outrigger lifting hydraulic cylinder 1-3, an outrigger horizontal push-pull hydraulic cylinder 1-4, an outrigger horizontal guide sleeve 1-5, an outrigger horizontal guide column 1-6, and a longitudinal guide column beam 1-7. The longitudinal guide column beam 1-7 is a guide column for the longitudinal movement of the trolley mechanism 2. The longitudinal direction is fixed by an outrigger horizontal guide column 1-6 provided with an outrigger horizontal guide sleeve 1-5. The outrigger horizontal guide column 1-6 is controlled and connected by the outrigger horizontal push-pull hydraulic cylinder 1-4. The transverse direction is fixed by an outrigger guide column 1-1 provided with an outrigger guide sleeve 1-2. The outrigger guide column 1-1 is controlled and connected by the outrigger lifting hydraulic cylinder 1-3.

[0006] The trolley mechanism 2 is composed of a trolley frame 2-1, a driving wheel group 2-2, a driven wheel group 2-3 driving a traveling motor 2-4, a transmission gear 2-5, a retractable guide sleeve and guide column 2-6, a rotating device 2-7, a track assembly 2-8, a lifting and retracting hydraulic cylinder 2-9, and a trolley push-pull hydraulic cylinder 2-10. The trolley frame 2-1 is a box structure welded from steel. The longitudinal displacement of the trolley frame 2-1 is controlled by the trolley push-pull hydraulic cylinder 2-10. A retractable guide sleeve and guide column 2-6 is provided in the top center of the trolley frame 2-1, and the connection and extension are controlled by the hydraulic cylinder 2-9. The bottom of the retractable guide sleeve and guide column 2-6 is connected to the track assembly 2-8 through the rotating device 2-7. A group of traveling wheel groups are respectively provided at the four corners of the trolley frame 2-1.

[0007] The leg guide column 1-1 is a hollow tubular structure with a spherical hinge pad at the bottom; the leg guide sleeve 1-2 is a hollow tubular structure with two ends not sealed; the leg horizontal guide sleeve 1-5 is a box structure welded by steel plates, and the middle isolation plate separates the whole into two cavity structures to provide guide sleeves for the leg horizontal guide column.

[0008] The longitudinal guide column beam 1-7 is a hollow tubular structure, which is an important component connecting the front and rear legs and is a guide column structure for the longitudinal movement of the trolley mechanism 2; and is provided with a reinforcing truss 1-8, which is a reinforcing beam similar to a truss structure welded from a hollow tubular structure, and plays a role in strengthening, stabilizing, and fixing external components in its structure.

[0009] The running frame 2-1 is a box structure welded from steel, with wheel assembly leg plates welded below the left and right sides, and reinforcing ribs are arranged between the leg plates and the lower layer of the box.

[0010] The running wheel set includes a driving wheel set 2-2, a driven wheel set 2-3, a transmission gear (2-5) and a driving running motor 2-4:

[0011] The driving wheel set 2-2 is composed of a steel wheel, a bearing, a shaft, and a gear. Bolt holes are opened at corresponding positions of the steel wheel to correspond to the bolt holes of the gear, and the gear, steel wheel, bearing, and shaft are fixed with bolts;

[0012] The driven wheel set 2-3 is composed of a steel wheel, a bearing, and a shaft, and is installed symmetrically with the driving wheel set 2-2. Bolt holes corresponding to the bolt holes of the gear are opened at corresponding positions of the steel wheel, and the steel wheel, bearing, and shaft are fixed with bolts;

[0013] The transmission gear 2-5 is installed on the output shaft of the driving travel motor, meshing with the driving wheel gear, and a clutch fork is arranged on the fork groove to separate and mesh with the driving wheel;

[0014] The driving travel motor 2-4 is installed on the outer side of the outrigger plate at the driving wheel mounting end.

[0015] The retractable guide sleeve and guide column 2-6 are welded by steel plates and hollow square tubes; the slewing device 2-7 is composed of a bearing mounting seat with a flange connection, a bearing, a turntable shaft, and a disk cover, and the disk cover controls the rotation through the turntable shaft and the bearings on the bearing mounting seat; the track assembly 2-8 is a special track assembly customized according to needs.

[0016] An application method of the longitudinally movable trolley with a switchable traveling system, characterized by comprising the following steps:

[0017] Step 1, when the trolley is traveling on a track-laid section, the trolley uses the running wheel sets 2-2 and 2-3 to travel on the track, and the operating control system adjusts the hydraulic cylinder 2-9 so that the crawler mechanism is retracted to the space between the left and right wheel set outriggers without affecting the use of the wheel set;

[0018] Step 2, when the trolley travels to a section where no track is laid, the trolley needs to switch the running system from the original wheel set running system to the crawler running system, and the operating control system adjusts the hydraulic cylinder 2-9 to make the crawler mechanism lift the retractable guide sleeve guide column 2-6 to lower the crawler running system to below the wheel set tread, so that the crawler runs directly on the ground or the structural surface;

[0019] Step 3: When the trolley moves to an obstacle, the trolley needs to cross the obstacle. The control system adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger support point in a relatively stable and solid position. The outrigger jacking hydraulic cylinder 1-3 is adjusted, and the outrigger jacking mechanism is lifted as a whole. The trolley running mechanism is higher than the obstacle. The control system adjusts the trolley push-pull hydraulic cylinder 2-10 to push and pull the trolley from one end of the longitudinal guide beam 1-7 to the other end to cross the obstacle. The control system adjusts the outrigger jacking hydraulic cylinder 1-3 to retract the outrigger off the ground, and adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger narrowest. The control system drives the running motor and continues to move;

[0020] Step 4. When the trolley walks to a step with a height difference and needs to pass through, the control system adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger support point in a relatively stable and solid position, adjusts the outrigger jacking hydraulic cylinder 1-3, and the outrigger jacking mechanism is lifted as a whole. The trolley running mechanism is higher than the higher step. The control system adjusts the trolley push-pull hydraulic cylinder 2-10 to push and pull the trolley from one end of the longitudinal guide beam 1-7 to the other end to cross the obstacle. The control system adjusts the outrigger jacking hydraulic cylinder 1-3 to retract the outrigger off the ground, and adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger narrowest. The control system drives the running motor and continues to walk;

[0021] Step 5: Follow the above steps according to the working conditions you encounter.

[0022] Compared with the prior art, the present invention has the following advantages:

[0023] 1. Two independent and different running systems are adopted, which are not restricted by running rails.

[0024] 2. Two independent and different running systems can be switched freely without affecting each other.

[0025] 3. The crawler traveling mechanism is equipped with a slewing mechanism, which can complete the curve walking and turning action by adjusting the speed of the left and right crawlers.

[0026] 4. With built-in outrigger lifting mechanism, when there are obstacles or height differences on the walking bearing surface, and it cannot be connected smoothly, the outrigger lifting mechanism can be used to lift and move the trolley longitudinally to smoothly cross the obstacles or the sections with height differences.

[0027] 5. Easy to transfer. The running wheel set is equipped with a clutch device. Long-distance transfer can be carried out by external traction machinery. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1a-1c Longitudinal moving trolley with switchable travel system

[0029] Figure 2a-2d Structural diagram of the outrigger support mechanism

[0030] Figure 3a-3e The structural diagram of the trolley mechanism

[0031] Figures 4a-4f Schematic diagram of the longitudinal moving trolley with switchable travel system

[0032] Description of symbols in the figure

[0033] 1 leg support mechanism, 2 trolley mechanism;

[0034] 1-1 outrigger guide column, 1-2 outrigger guide sleeve, 1-3 outrigger lifting hydraulic cylinder, 1-4 outrigger horizontal push-pull hydraulic cylinder, 1-5 outrigger horizontal guide sleeve, 1-6 outrigger horizontal guide column, 1-7 longitudinal guide column beam, 1-8 reinforced truss;

[0035] 2-1 trolley frame, 2-2 driving wheel set, 2-3 driven wheel set, 2-4 driving travel motor, 2-5 transmission gear, 2-6 retractable guide sleeve and guide column, 2-7 slewing device, 2-8 crawler track assembly, 2-9 lifting and retracting hydraulic cylinder, 2-10 trolley push and pull hydraulic cylinder. DETAILED DESCRIPTION

[0036] In order to make the purpose, principle and structure of the present invention more clear, it is further described below in conjunction with the drawings and specific embodiments.

[0037] Embodiment 1: Structural composition of a longitudinally movable trolley with a switchable travel system

[0038] To achieve the above purpose, the present invention mainly adopts two sets of independent and different running systems that can be switched freely and do not affect each other, and has its own outrigger lifting system, which can lift the trolley to cross the obstacle section. This invention mainly consists of two parts, namely: outrigger support mechanism 1 and trolley mechanism 2. Figure 1a-1c shown.

[0039] The outrigger support mechanism 1 is composed of an outrigger guide column 1-1, an outrigger guide sleeve 1-2, an outrigger lifting hydraulic cylinder 1-3, an outrigger horizontal push-pull hydraulic cylinder 1-4, an outrigger horizontal guide sleeve 1-5, an outrigger horizontal guide column 1-6, a longitudinal guide column beam 1-7, and a reinforcing truss 1-8. The outrigger guide column 1-1 is a hollow tubular structure, and a spherical hinged pad is provided at the bottom to be inserted into the outrigger guide sleeve 1-2 of the hollow tubular structure with unsealed ends, and is respectively connected to the outrigger lifting hydraulic cylinder 1-3, and is extended and retracted with the extension and retraction of the outrigger lifting hydraulic cylinder 1-3. One end of the outrigger horizontal guide column 1-6 is fixedly connected to the outrigger guide sleeve 1-2, and the remaining part is inserted into the outrigger horizontal guide sleeve 1-5, and is respectively connected to the outrigger horizontal push-pull hydraulic cylinder 1-4 to form a hydraulic cylinder driven retractable structure. The two ends of the longitudinal guide column beam 1-7 are connected to the side of the horizontal guide sleeve 1-5 of the leg, and the middle is inserted into the guide sleeve of the longitudinal movement of the trolley mechanism 2. The reinforcement truss 1-8 is a hollow tubular structure welded into a reinforcement beam similar to a truss structure, which plays a role in strengthening, stabilizing, and fixing external components in its structure, and the two ends are welded to the top surface of the horizontal guide sleeve 1-5 of the leg. Figure 2a-2d Shown

[0040] The trolley mechanism 2 is composed of a trolley frame 2-1, a driving wheel set 2-2, a driven wheel set 2-3, a driving travel motor 2-4, a transmission gear (2-5), a retractable guide sleeve guide column 2-6, a slewing device 2-7, a crawler assembly 2-8, a lifting and retracting hydraulic cylinder 2-9, and a trolley push-pull hydraulic cylinder 2-10. The travel frame 2-1 is a box structure welded from steel, with a guide sleeve cavity in the middle sleeved on the longitudinal guide column beam 1-7. Wheel set leg plates are welded below the left and right sides, and reinforcing ribs are set on the leg plates and the lower layer of the box. The driving wheel set 2-2 and the driven wheel set 2-3 are symmetrically installed at corresponding positions on the wheel set leg plates. The driving travel motor 2-4 is installed on the outer side of the leg plate at the driving wheel mounting end. The motor output shaft is installed in conjunction with the transmission gear (2-5), meshed with the driving wheel gear, and transmits the driving force. A fork slot is set on it to set a clutch fork device for separation and meshing of the driving and driving wheels. The guide sleeve flange of the retractable guide sleeve guide column 2-6 is connected to the reserved hole of the frame with bolts. The guide column is welded to the cover plate of the slewing device 2-7, and the lower flange of the slewing device is bolted to the connecting flange of the track assembly 2-8. The hydraulic cylinder 2-9 is respectively connected to the guide sleeve top plate of the retractable guide sleeve guide column 2-6 and the cover plate of the slewing device 2-7, and the retractable guide sleeve guide column 2-6 can be extended and retracted with the extension and retraction of the cylinder. The trolley push-pull hydraulic cylinder 2-10 is respectively connected to the running frame 2-1 and the outrigger horizontal guide sleeve 1-5, and the trolley mechanism 2 moves longitudinally along the longitudinal guide column beam 1-7 as the cylinder is extended and retracted. Figure 3a-3e shown.

[0041] Embodiment 2 A method for using a longitudinally movable trolley with a switchable travel system

[0042] See also Figures 4a-4f shown.

[0043] 1. When the trolley is traveling on a tracked area, the trolley uses the running wheel groups 2-2 and 2-3 to travel on the track. The operating control system adjusts the hydraulic cylinder 2-9 to shrink the crawler mechanism to the space between the left and right wheel group outriggers without affecting the use of the wheel group.

[0044] 2. When the trolley travels to a section where no track is laid, the trolley needs to switch the running system from the original wheel running system to the crawler running system, and the operating control system adjusts the hydraulic cylinder 2-9 to make the crawler mechanism lift the retractable guide sleeve guide column 2-6 to lower the crawler running system to below the wheel tread, so that the crawler runs directly on the ground or structural surface.

[0045] 3. When the trolley moves to an obstacle, the trolley needs to cross the obstacle. The control system adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger support point in a relatively stable and solid position, adjusts the outrigger jacking hydraulic cylinder 1-3, and the outrigger jacking mechanism is lifted as a whole. The trolley running mechanism is higher than the obstacle. The control system adjusts the trolley push-pull hydraulic cylinder 2-10 to push and pull the trolley from one end of the longitudinal guide column beam 1-7 to the other end to cross the obstacle. The control system adjusts the outrigger jacking hydraulic cylinder 1-3 to retract the outrigger off the ground, and adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger narrowest. The control system drives the running motor and continues to walk.

[0046] 4. When the trolley walks to a step with a height difference and needs to pass through, the control system adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger support point in a relatively stable and solid position, adjusts the outrigger jacking hydraulic cylinder 1-3, and the outrigger jacking mechanism is lifted as a whole. The trolley travel mechanism is higher than the higher step. The control system adjusts the trolley push-pull hydraulic cylinder 2-10 to push and pull the trolley from one end of the longitudinal guide column beam 1-6 to the other end to cross the obstacle. The control system adjusts the outrigger jacking hydraulic cylinder 1-3 to retract the outrigger off the ground, and adjusts the outrigger horizontal push-pull hydraulic cylinder 1-4 to make the outrigger narrowest. The control system drives the travel motor and continues to walk.

[0047] Just follow the above steps according to the working conditions you encounter.

Claims

1. An application method of a longitudinally movable trolley with a switchable running system, characterized in that: The following steps are involved: Step 1, when the trolley is traveling on a track-laid section, the trolley uses the running wheel set (2-2, 2-3) to travel on the track, and the control system is operated to adjust the lifting and retracting hydraulic cylinder (2-9) so that the crawler assembly is retracted to the space between the left and right wheel set outrigger plates without affecting the use of the wheel set; Step 2, when the trolley travels to a section where no track is laid, the trolley needs to switch the running system from the original wheel set running system to the crawler running system, and the operating control system adjusts the lifting and retracting hydraulic cylinder (2-9) to make the crawler assembly lift the retractable guide sleeve guide column (2-6) to lower the crawler running system to below the wheel set tread, so that the crawler runs directly on the ground or the structural surface; Step 3, when the trolley moves to an obstacle, the trolley needs to cross the obstacle, the operating control system adjusts the outrigger horizontal push-pull hydraulic cylinder (1-4) to make the outrigger support point in a stable and solid position, adjusts the outrigger jacking hydraulic cylinder (1-3), the outrigger jacking mechanism is lifted as a whole, the trolley running system is higher than the obstacle, the operating control system adjusts the trolley push-pull hydraulic cylinder (2-10), the trolley frame (2-1) is controlled by the trolley push-pull hydraulic cylinder (2-10) to control the longitudinal displacement, the trolley is pushed and pulled from one end of the longitudinal guide column beam (1-7) to the other end to cross the obstacle, the operating control system adjusts the outrigger jacking hydraulic cylinder (1-3) to retract the outrigger off the ground, adjusts the outrigger horizontal push-pull hydraulic cylinder (1-4) to retract the outrigger to the narrowest state, the operating control system drives the running motor, and continues to move; Step 4, when the trolley walks to the step with height difference and needs to pass through, the operating control system adjusts the outrigger horizontal push-pull hydraulic cylinder (1-4) to make the outrigger support point in a stable and solid position, adjusts the outrigger jacking hydraulic cylinder (1-3), and the outrigger jacking mechanism is lifted as a whole, so that the trolley running system is higher than the higher step among the steps with height difference, and the operating control system adjusts the trolley push-pull hydraulic cylinder (2-10). The trolley frame (2-1) is controlled by the trolley push-pull hydraulic cylinder (2-10) for longitudinal displacement, and the trolley is pushed and pulled from one end of the longitudinal guide column beam (1-7) to the other end to cross the obstacle, and the operating control system adjusts the outrigger jacking hydraulic cylinder (1-3) to retract the outrigger off the ground, and adjusts the outrigger horizontal push-pull hydraulic cylinder (1-4) to retract the outrigger to the narrowest state, and the operating control system drives the running motor to continue walking; Step 5: Follow the above steps according to the working conditions you encounter; The trolley comprises two independent and different travel systems, namely a leg support mechanism (1) and a trolley mechanism (2). The leg support mechanism (1) serves as a guide structure for the longitudinal movement of the trolley mechanism (2). The outrigger support mechanism (1) is composed of an outrigger guide column (1-1), an outrigger guide sleeve (1-2), an outrigger lifting hydraulic cylinder (1-3), an outrigger horizontal push-pull hydraulic cylinder (1-4), an outrigger horizontal guide sleeve (1-5), an outrigger horizontal guide column (1-6), and a longitudinal guide column beam (1-7). The longitudinal guide column beam (1-7) is a guide column for longitudinal movement of the trolley mechanism (2). The longitudinal guide column beam (1-7) is fixed in the longitudinal direction by an outrigger horizontal guide column (1-6) provided with an outrigger horizontal guide sleeve (1-5). The outrigger horizontal guide column (1-6) is controlled and connected by an outrigger horizontal push-pull hydraulic cylinder (1-4). The transverse direction is fixed by an outrigger guide column (1-1) provided with an outrigger guide sleeve (1-2). The outrigger guide column (1-1) is controlled and connected by an outrigger lifting hydraulic cylinder (1-3). The trolley mechanism (2) is composed of a trolley frame (2-1), a driving wheel set (2-2), a driven wheel set (2-3), a driving travel motor (2-4), a transmission gear (2-5), a retractable guide sleeve and guide column (2-6), a slewing device (2-7), a crawler assembly (2-8), a lifting and retracting hydraulic cylinder (2-9), and a trolley push-pull hydraulic cylinder (2-10). The trolley frame (2-1) is a box structure made of welded steel. The trolley frame (2-1) is controlled in longitudinal displacement by a trolley push-pull hydraulic cylinder (2-10), a retractable guide sleeve guide column (2-6) is provided at the top center of the trolley frame (2-1), and the retractable connection is controlled by a lifting and retracting hydraulic cylinder (2-9), the bottom of the retractable guide sleeve guide column (2-6) is connected to the crawler assembly (2-8) through a slewing device (2-7), and a set of running wheel groups are respectively provided at the four corners of the trolley frame (2-1).

2. The application method of the longitudinal moving trolley with switchable running system as claimed in claim 1, characterized in that: The leg guide column (1-1) is a hollow tubular structure with a spherical hinge pad at the bottom, and the leg guide sleeve (1-2) is a hollow tubular structure with two ends not sealed; the leg horizontal guide sleeve (1-5) is a box structure formed by welding steel plates, and the middle isolation plate separates the whole into two cavity structures to provide a guide sleeve for the leg horizontal guide column.

3. The application method of the longitudinal moving trolley with switchable running system as claimed in claim 1, characterized in that: The longitudinal guide column beam (1-7) is a hollow tubular structure, and is a guide column structure for the longitudinal movement of the trolley mechanism (2); and is provided with a reinforcing truss (1-8), which is a reinforcing beam having truss structural characteristics and is formed by welding the hollow tubular structure.

4. The application method of the longitudinal moving trolley with switchable running system as claimed in claim 1 is characterized in that: The trolley frame (2-1) is a box structure welded from steel, with wheel assembly leg plates welded below the left and right sides, and reinforcing ribs are provided between the leg plates and the lower layer of the box.

5. The application method of the longitudinal moving trolley with switchable running system as claimed in claim 1, characterized in that: The retractable guide sleeve and guide column (2-6) are welded from steel plates and hollow square tubes; the slewing device (2-7) is composed of a bearing mounting seat with a flange connection, a bearing, a turntable shaft, and a turntable cover, and the turntable cover controls the rotation via the turntable shaft and the bearings on the bearing mounting seat; the crawler track assembly (2-8) is a special crawler track assembly customized according to needs.

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