Optimized road and railway dual-purpose tractor guide wheel mechanism

Abstract

The utility model discloses an optimized road and railway dual-purpose tractor guide wheel mechanism which comprises a machine frame, two sets of lifting assemblies are arranged in the machine frame side by side, a mounting frame is arranged below the machine frame through a connecting block, a connecting plate is arranged in the middle of the mounting frame, and guide wheels are rotationally arranged at the front end and the rear end of the mounting frame through guide wheel shafts. A double-shaft motor is arranged in the middle of the upper ends of the two lifting assemblies and fixed to the top face of the rack through a motor base, a shock absorber is arranged between the rack and the connecting block, a connecting groove is formed below the connecting block, and the mounting frame is rotationally mounted in the connecting groove through a connecting shaft. According to the device, the double-shaft motor is arranged on the outer side, the lifting synchronization performance of the device is remarkably improved, and maintenance and overhaul of the motor are facilitated; by arranging the shock absorbers, the stability of the tractor in the running process on uneven tracks and road surfaces is enhanced, plastic deformation caused by stress of the framework structure of the device can be prevented, and therefore the external force resistance of the device is improved, and the service life of the device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of towing vehicle, concretely relates to an optimized highway and railway dual-purpose towing vehicle guide wheel mechanism. BACKGROUND

[0002] The double-track highway and railway towing vehicle is a multifunctional vehicle with the capability of driving on highways and rails. The vehicle is designed uniquely and is equipped with two sets of wheels: one set is solid rubber wheels, and the other set is metal guide wheels. The solid rubber wheels are suitable for highway driving, while the metal guide wheels are dedicated for rail driving. In order to achieve the convenient conversion of the vehicle between different tracks, special conversion lane facilities are provided at the intersection. Through these facilities, the vehicle can easily drive from the highway to the railway, or from the railway back to the highway, or remain on the current track.

[0003] During the use of the product developed and produced by our company (authorized announcement number: CN 208133986 U), it was found that there is room for improvement. The road surface or track itself is uneven, and there is a height difference between the road surfaces or track surfaces on both sides of the towing wheels. The guide wheel and the rack are hard connected, and in the actual use process, the towing vehicle bounces greatly, and even tilts, which poses a risk of derailment. The double-motor structure has a high cost and a low synchronization rate, and the structure is complex and difficult to maintain and repair. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims to solve the problems raised in the background technology and proposes an optimized highway and railway dual-purpose towing vehicle guide wheel mechanism. The utility model discloses a device by setting double-shaft motor outside, which significantly improves the synchronization performance of the device lifting and facilitates the maintenance and repair work of the motor. By configuring a shock absorber, the stability of the towing vehicle during driving on uneven tracks and road surfaces is enhanced, and more importantly, the buffer function is improved, which can prevent the device frame structure from plastic deformation due to stress, thereby improving the anti-external force performance of the device and prolonging the service life.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] An optimized highway and railway dual-purpose towing vehicle guide wheel mechanism, comprising a rack, two sets of lifting assemblies are arranged side by side in the rack, an installation rack is arranged below the rack through a connecting block, a connecting plate is arranged in the middle of the installation rack, guide wheels are rotatably arranged at the front and rear ends of the installation rack through guide wheel shafts, a double-shaft motor is arranged at the middle position of the upper end of the two sets of lifting assemblies, the double-shaft motor is fixed on the top surface of the rack through a motor base, a shock absorber is arranged between the rack and the connecting block, a connecting groove is arranged below the connecting block, and the installation rack is rotatably installed in the connecting groove through a connecting shaft.

[0007] As preferred, the lifting assembly further comprises a shell, a sleeve inner shell slidingly sleeved in the shell, a first transmission plate fixedly arranged on the upper interior of the shell, a second transmission plate fixedly arranged on the upper interior of the inner shell, a threaded shaft arranged at the middle position of the first transmission plate and the second transmission plate, the threaded shaft being threadedly rotatably connected with the first transmission plate and fixedly connected with the second transmission plate, a driven gear arranged above the second transmission plate, a driving gear arranged on the output shaft of each of the two sides of the double-shaft motor, the driven gear and the driving gear being vertically engaged, and the thread directions of the left threaded shaft and the right threaded shaft being opposite.

[0008] As preferred, the shell of the shock absorber is provided with threads on the outer side, and the shock absorber further comprises a pressure regulating nut and a spring, the pressure regulating nut being threadedly rotatably connected with the outer side of the shell of the shock absorber, the upper end of the spring being fixedly limited in contact with the top plate, and the lower end of the spring being in contact with the upper surface of the pressure regulating nut.

[0009] As preferred, one end of the connecting shaft and the guide wheel shaft is a bolt head structure, the other end is provided with a groove, the connecting shaft is fixedly clamped on the groove through a first limiting sheet, the first limiting sheet is fixed on the side surface of the connecting block through a bolt, the guide wheel shaft is fixedly clamped on the groove through a second limiting sheet, and the second limiting sheet is fixed on the side surface of the mounting frame through a bolt.

[0010] As preferred, a lattice sleeve is arranged between the mounting frame and the connecting groove, and a lattice sleeve is arranged between the guide wheel and the mounting frame.

[0011] As preferred, a rim is arranged on one side of the guide wheel, a tread surface is arranged on the other side of the guide wheel, the diameter of the tread surface decreases with the increase of the distance from the rim, and bearings are arranged on the two sides of the guide wheel.

[0012] As preferred, a pressure sensor is arranged between the spring and the shock absorber, and indicator lamps are arranged on the side surface of the rack and electrically connected with the pressure sensor.

[0013] Compared with the prior art, the device has the following beneficial effects:

[0014] 1. The device disclosed in the utility model is provided with a double-shaft motor on the outer side, so that the synchronous performance of the lifting of the device is significantly improved, and the maintenance and repair work of the motor is facilitated; the shock absorber is configured, so that the stability of the tractor during driving on uneven tracks and road surfaces is enhanced, and the buffer function is particularly improved, so that the plastic deformation of the device framework structure due to stress is prevented, and the anti-external force performance of the device is improved and the service life is prolonged.

[0015] 2. The device disclosed in the utility model is provided with two groups of lifting assemblies, so that the guide wheel structure is stably and synchronously lifted and lowered.

[0016] 3. The utility model discloses a device can adjust spring elasticity according to how much load through setting pressure regulating nut on shock absorber, prolong the service life of shock absorber.

[0017] 4. The utility model discloses a device connecting shaft and guide wheel axle are limited through first limit piece and second limit piece axial, make guide wheel and mounting frame can quick installation dismantlement, improve the device overhaul efficiency.

[0018] 5. The utility model discloses a device sets up pressure sensor between spring and shock absorber, and is electrically connected with indicating lamp, can determine guide wheel whether to drop in place through indicating lamp, monitor guide wheel whether to overload operation simultaneously, improve the device operating efficiency and the security of use. DRAWINGS

[0019] Figure 1 It is isometric structure schematic diagram of the utility model discloses the device;

[0020] Figure 2 It is the whole section view of the utility model discloses the device;

[0021] Figure 3 It is the utility model discloses the device appendix Figure 2 The enlarged view of A;

[0022] Figure 4 It is guide wheel place structure schematic diagram of the utility model discloses the device;

[0023] Figure 5 It is guide wheel section view of the utility model discloses the device.

[0024] 1, rack;2, lifting assembly;21, double shaft motor;22, motor base;23, driving gear;24, driven gear;25, first transmission plate;26, threaded shaft;27, second transmission plate;28, outer shell;29, inner shell;3, shock absorber;31, pressure regulating nut;32, pressure sensor;33, indicating lamp;34, spring;4, connecting block;41, connecting groove;5, connecting shaft;6, first limit piece;7, second limit piece;8, guide wheel;81, bearing;82, rim;83, tread;9, guide wheel axle;10, connecting plate;11, mounting frame;12, lattice cover. DETAILED DESCRIPTION

[0025] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0026] As Figures 1-5As shown, an optimized highway and railway dual tractor guide wheel mechanism, comprising a frame 1, two groups of lifting assemblies 2 are arranged side by side in the frame 1, an installation frame 11 is arranged below the frame 1 through a connecting block 4, a connecting plate 10 is arranged in the middle of the installation frame 11, guide wheels 8 are rotatably arranged at the front and rear ends of the installation frame 11 through guide wheel shafts 9, a double-shaft motor 21 is arranged at the middle position of the upper end of the two groups of lifting assemblies 2, the double-shaft motor 21 is fixed on the top surface of the frame 1 through a motor base 22, and the double-shaft motor 21 provides power for the two lifting assemblies 2, ensuring consistent lifting, and the double-shaft motor 21 is arranged on the outside of the device, facilitating maintenance, a shock absorber 3 is arranged between the frame 1 and the connecting block 4, enhancing the stability of the tractor during driving on uneven tracks and road surfaces, and especially improving the buffering function, which can prevent the device skeleton structure from plastic deformation due to stress, thereby improving the external force resistance performance of the device and prolonging the service life, a connecting groove 41 is arranged below the connecting block 4, and the installation frame 11 is rotatably installed in the connecting groove 41 through a connecting shaft 5, so that the gravity center of the device and the stress point of the guide wheel 8 are located on the same straight line, avoiding eccentric force on the device and improving the service life of the device.

[0027] As shown in Figures 1-3 , the lifting assembly 2 further comprises an outer shell 28, an inner shell 29 is slidably sleeved in the outer shell 28, a first transmission plate 25 is fixedly arranged at the upper part of the inner part of the outer shell 28, a second transmission plate 27 is fixedly arranged at the upper part of the inner part of the inner shell 29, a threaded shaft 26 is arranged at the middle position of the first transmission plate 25 and the second transmission plate 27, the threaded shaft 26 is threadedly rotatably connected with the first transmission plate 25, and the threaded shaft 26 is fixedly connected with the second transmission plate 27, a driven gear 24 is arranged above the second transmission plate 27, a driving gear 23 is arranged on the output shaft of each side of the double-shaft motor 21, the driven gear 24 and the driving gear 23 are vertically engaged, the double-shaft motor 21 drives the threaded shaft 26 to rotate, the threaded shaft 26 is fixed with the second transmission plate 27 and rotates on the first transmission plate 25, thereby driving the first transmission plate 25 and the outer shell 28 to move up and down, realizing electric lifting of the lifting assembly 2, and the thread directions of the left threaded shaft 26 and the right threaded shaft 26 are opposite, ensuring that the two lifting assemblies 2 are lifted synchronously when the motor rotates.

[0028] As shown in Figure 2 , the shell of the shock absorber 3 is provided with threads on the outer side, and the shock absorber 3 further comprises a pressure regulating nut 31 and a spring 34, the pressure regulating nut 31 is threadedly rotatably connected with the shell of the shock absorber 3, the upper end of the spring 34 is in contact with and fixedly limited by the top plate, and the lower end of the spring 34 is in contact with the upper surface of the pressure regulating nut 31, so that the spring force of the spring 34 can be adjusted according to the load, thereby prolonging the service life of the shock absorber 3.

[0029] As shown in Figure 1 , Figure 2 and Figure 4As shown in the drawings, the connecting shaft 5 and the guide wheel shaft 9 are provided with bolt head structures at one end, and recesses are arranged at the other end, the connecting shaft 5 is clamped and fixed in the recess through the first limiting sheet 6, the first limiting sheet 6 is fixed on the side surface of the connecting block 4 through bolts, the guide wheel shaft 9 is clamped and fixed in the recess through the second limiting sheet 7, and the second limiting sheet 7 is fixed on the side surface of the mounting frame 11 through bolts, so that the connecting shaft 5 and the guide wheel shaft 9 can be axially limited through the first limiting sheet 6 and the second limiting sheet 7, and the connecting shaft 5 and the guide wheel shaft 9 are prevented from rotating around the axis, so that the device can stably operate, the first limiting sheet 6 and the second limiting sheet 7 are convenient to disassemble, and the device maintenance efficiency is improved.

[0030] As shown in the drawings, Figure 2 The mounting frame 11 and the connecting groove 41 are provided with the sleeve 12, so that the mounting frame 11 is axially limited, the friction between the mounting frame 11 and the connecting groove 41 is reduced, and the stability of the rotation of the mounting frame 11 is improved.

[0031] As shown in the drawings, Figure 5 One side of the guide wheel 8 is provided with the rim 82, the other side of the guide wheel 8 is provided with the tread 83, the diameter of the tread 83 decreases with the increase of the distance from the rim 82, the centrifugal force during the operation of the tractor is offset, bearings 81 are arranged on the two sides of the guide wheel 8, the smoothness of the operation of the guide wheel 8 is improved, the friction is reduced, and the durability of the parts is improved.

[0032] As shown in the drawings, Figure 1 And Figure 2 The pressure sensor 32 is arranged between the spring 34 and the shock absorber 3, the spring force condition of the spring 34 is detected in real time through the pressure sensor 32, the indicator lamp 33 is arranged on the side surface of the rack 1, the indicator lamp 33 is electrically connected with the pressure sensor 32, and the spring force grade information is displayed through the indicator lamp 33, whether the guide wheel 8 is lowered in place can be determined through the indicator lamp 33, whether the guide wheel 8 is operated under overload can be monitored, the operation efficiency of the device is improved, and the safety during use is improved.

[0033] In the description of the utility model, the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "vertical", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of describing the utility model and not for the purpose of requiring the utility model to be constructed or operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In the utility model, "connection" should be understood in a broad sense, for example, it can be a connection, or a detachable connection; it can be a direct connection, or an indirect connection through an intermediate part. For ordinary skilled persons in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0034] The above is the preferred operation mode of the present application, and the specific operation mode is only used to better understand the idea of the present application. For ordinary skilled in the art, according to the principle of the present application, several improvements or equivalent replacements can be made, and these improvements or equivalent replacements are also considered to fall within the scope of the present application.

Claims

1. An optimized guide wheel mechanism for a road and rail dual-purpose tractor, comprising a frame (1), two sets of lifting components (2) arranged side by side within the frame (1), a mounting frame (11) arranged below the frame (1) via a connecting block (4), a connecting plate (10) arranged in the middle of the mounting frame (11), and guide wheels (8) rotatably mounted at the front and rear ends of the mounting frame (11) via guide wheel shafts (9), characterized in that: The double-shaft motor (21) is arranged at the middle position of the upper end of the lifting assembly (2), is fixed on the top surface of the frame (1) through a motor base (22), and a shock absorber (3) is arranged between the frame (1) and the connecting block (4).

2. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 1, characterized in that: The lifting assembly (2) further comprises an outer shell (28) and a slidingly sleeved inner shell (29) in the outer shell (28), a first transmission plate (25) is fixedly arranged at the upper portion of the inner shell (28), a second transmission plate (27) is fixedly arranged at the upper portion of the inner shell (29), threaded shafts (26) are arranged at the middle positions of the first transmission plate (25) and the second transmission plate (27), the threaded shafts (26) are threadedly connected with the first transmission plate (25) and are fixedly connected with the second transmission plate (27), a driven gear (24) is arranged above the second transmission plate (27), driving gears (23) are respectively arranged on the output shafts at the two sides of the double-shaft motor (21), the driven gear (24) and the driving gears (23) are vertically engaged, and the threaded shafts (26) on the left side and the right side are opposite in threaded direction.

3. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 1, characterized in that: The shell of the shock absorber (3) is provided with threads on the outer side, and the shock absorber (3) further comprises a pressure adjusting nut (31) and a spring (34), the pressure adjusting nut (31) is threadedly and rotatably connected with the shell of the shock absorber (3), the upper end of the spring (34) is fixedly limited in contact with the top plate, and the lower end of the spring (34) is in contact with the upper surface of the pressure adjusting nut (31).

4. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 1, characterized in that: The connecting shaft (5) and the guide wheel shaft (9) are in bolt head structure at one end and are provided with grooves at the other end, the connecting shaft (5) is clamped on the grooves and fixed through first limiting sheets (6), the first limiting sheets (6) are fixed on the side surface of the connecting block (4) through bolts, the guide wheel shaft (9) is clamped on the grooves and fixed through second limiting sheets (7), and the second limiting sheets (7) are fixed on the side surface of the mounting frame (11) through bolts.

5. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 1, characterized in that: A lattice sleeve (12) is arranged between the mounting frame (11) and the connecting groove (41), and a lattice sleeve (12) is arranged between the guide wheel (8) and the mounting frame (11).

6. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 1, characterized in that: A rim (82) is arranged on one side of the guide wheel (8), a tread surface (83) is arranged on the other side of the guide wheel (8), the diameter of the tread surface (83) decreases with the increase of the distance from the rim (82), and bearings (81) are arranged on the two sides of the guide wheel (8).

7. The optimized highway and railway dual-purpose tractor guide wheel mechanism according to claim 3, characterized in that: A pressure sensor (32) is arranged between the spring (34) and the shock absorber (3), and indicator lamps (33) are arranged on the side surface of the frame (1), and the indicator lamps (33) are electrically connected with the pressure sensor (32).

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