Dragging tractor

Abstract

The utility model discloses a dragging traction machine which comprises a machine frame and an upper traction mechanism, and the upper traction mechanism is connected to the machine frame through at least two connecting mechanisms which are sequentially arranged from front to back. Wherein the connecting mechanism comprises a connecting part and a sliding part, the sliding part is connected to the rack in a sliding mode in the vertical direction, the upper end of the connecting part is connected with the sliding part, and the connecting part is used for rotating by a certain angle relative to the sliding part; and the upper traction mechanism is rotationally connected with the lower end part of the connecting part. According to the utility model, the upper traction mechanism can incline forwards and backwards without being blocked, and the upper traction mechanism can be ensured to slide smoothly.

Description

Technical Field

[0001] The utility model relates to a dragging tractor. Background Art

[0002] Currently, traction equipment typically includes an upper traction mechanism, a lower traction mechanism, and a traction channel located between the upper and lower traction mechanisms. Typically, the upper traction mechanism is vertically slidably connected to a frame and can be raised and lowered by a cylinder. During normal traction operation, the cylinder drives the upper traction mechanism downward to press the extruded product in the traction channel against the lower traction mechanism. The upper and lower traction mechanisms then jointly pull the extruded product forward. For example, Chinese Patent Publication No. CN207240801U discloses a device for achieving online traction of extruded plastic sheets.

[0003] During the initial production phase, a traction tube is used to guide the extruded product into the traction channel. Specifically, the soft, sticky extruded product is wrapped around one end of the traction tube and pinched to form a large connector. The connector connects the traction tube to the extruded product. The traction tube is then fed into the traction channel. Pulled forward by the upper and lower traction mechanisms, the traction tube moves forward, pulling the connector and the extruded product into the traction channel. By the time the extruded product enters the traction channel, it has cooled and hardened. Because the connector is formed by wrapping the extruded product around the traction tube and pinching it, it has a relatively large outer dimension. Therefore, when the connector is pulled into the front end of the traction channel, it pushes the front end of the upper traction mechanism upward, causing the upper traction mechanism to tilt, with the front higher and the back lower. When the connector is pulled to the rear end of the traction channel, it pushes the rear end of the upper traction mechanism upward, causing the upper traction mechanism to tilt, with the front lower and the back higher.

[0004] However, in the prior art, the upper traction mechanism is generally connected to the frame through a linear guide rail or a guide column. The front and rear ends of the existing upper traction mechanism can only rise or fall synchronously, that is, the upper traction mechanism must remain horizontal during the lifting process. Once one end of the upper traction mechanism is lifted up and is in a tilted state, the upper traction mechanism can easily be stuck on the linear guide rail or the guide column and cannot slide, thereby causing the equipment to malfunction and fail to work normally. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a dragging tractor, which can enable an upper traction mechanism to tilt forward and backward without being stuck and can ensure that the upper traction mechanism slides smoothly.

[0006] In order to solve the above technical problems, the technical solution of the present utility model is: a dragging tractor, comprising a frame and an upper traction mechanism, wherein the upper traction mechanism is connected to the frame through at least two connecting mechanisms arranged sequentially from front to back;

[0007] The connecting mechanism includes a connecting component and a sliding component;

[0008] The sliding component is connected to the frame in a sliding manner in the up and down directions;

[0009] The upper end of the connecting component is connected to the sliding component, and the connecting component is used to rotate a certain angle relative to the sliding component;

[0010] The upper traction mechanism is rotatably connected to the lower end portion of the connecting component.

[0011] Further providing a specific structure of the connecting mechanism, the connecting mechanism comprises two sliding components, the two sliding components are arranged side by side, one on the left and one on the right, and are respectively connected to the frame in a sliding manner in the up and down directions;

[0012] The connecting component includes a connecting rod, a left connecting plate and a right connecting plate;

[0013] The upper traction mechanism is rotatably connected to the connecting rod;

[0014] The left end of the connecting rod is connected to the lower end of the left connecting plate, and the right end of the connecting rod is connected to the lower end of the right connecting plate;

[0015] The upper end portion of the left connecting plate is connected to the sliding component on the left side, and the left connecting plate is used to rotate a certain angle relative to the sliding component on the left side;

[0016] The upper end portion of the right connecting plate is connected to the sliding component on the right side, and the right connecting plate is used to rotate at a certain angle relative to the sliding component on the right side.

[0017] Furthermore, a left waist-shaped groove is provided at the upper end of the left connecting plate, and a left joint portion is provided on the left sliding component, and the left joint portion is loosely fitted in the left waist-shaped groove;

[0018] A right waist-shaped groove is provided at the upper end portion of the right connecting plate, and a right joint portion is provided on the sliding component on the right side. The right joint portion is clearance-fitted in the right waist-shaped groove.

[0019] Furthermore, the frame includes a plurality of guide posts corresponding to the sliding components, and the sliding components are slidably connected to the corresponding guide posts along the up-down direction.

[0020] Furthermore, the dragging tractor further comprises a lower traction mechanism, a front lifting drive mechanism and a rear lifting drive mechanism;

[0021] The lower traction mechanism is connected to the frame and is located below the upper traction mechanism, and a traction channel is provided between the upper traction mechanism and the lower traction mechanism;

[0022] The front lifting drive mechanism and the rear lifting drive mechanism are both connected to the frame;

[0023] The front lifting drive mechanism is connected to the front end portion of the upper traction mechanism and is used to drive the front end portion of the upper traction mechanism to move up and down;

[0024] The rear lifting drive mechanism is connected to the rear end portion of the upper traction mechanism and is used to drive the rear end portion of the upper traction mechanism to move up and down.

[0025] Furthermore, the front lifting drive mechanism includes at least two front telescopic cylinders arranged in parallel on the left and right sides, the upper ends of the front telescopic cylinders are hinged to the frame, and the lower ends of the front telescopic cylinders are hinged to the front end of the upper traction mechanism;

[0026] The rear lifting drive mechanism includes at least two rear telescopic cylinders arranged in parallel on the left and right sides, the upper ends of the rear telescopic cylinders are hinged on the frame, and the lower ends of the rear telescopic cylinders are hinged to the rear end of the upper traction mechanism.

[0027] Furthermore, an intermediate lifting drive mechanism is provided between the front lifting drive mechanism and the rear lifting drive mechanism;

[0028] The intermediate lifting drive mechanism includes at least two intermediate telescopic cylinders arranged in parallel on the left and right sides, the upper ends of the intermediate telescopic cylinders are hinged on the frame, and the lower ends of the intermediate telescopic cylinders are hinged to the middle part of the upper traction mechanism.

[0029] Furthermore, the upper traction mechanism includes an upper mounting frame, an upper driving shaft, an upper driven shaft, an upper power mechanism, at least one upper crawler, an upper driving sprocket corresponding to the upper crawler, and an upper driven sprocket corresponding to the upper crawler;

[0030] The upper driving shaft is rotatably connected to the upper mounting frame, and the upper driving sprocket is connected to the upper driving shaft;

[0031] The upper driven shaft is connected to the upper mounting frame, and the upper driven sprocket is rotatably connected to the upper driven shaft;

[0032] The upper crawler is connected to the corresponding upper driving sprocket and the corresponding upper driven sprocket;

[0033] The upper power mechanism is connected to the upper driving shaft and is used to drive the upper driving shaft to rotate, thereby driving the upper driving sprocket to rotate and further driving the upper crawler to move;

[0034] The upper mounting frame is rotatably connected to the lower end portion of the connecting component;

[0035] The front lifting drive mechanism is connected to the front end of the upper mounting frame and is used to drive the front end of the upper mounting frame to move up and down;

[0036] The rear lifting drive mechanism is connected to the rear end portion of the upper mounting frame and is used to drive the rear end portion of the upper mounting frame to move up and down;

[0037] The lower traction mechanism includes a lower mounting frame, a lower driving shaft, a lower driven shaft, a lower power mechanism, at least one lower crawler, a lower driving sprocket corresponding to the lower crawler, and a lower driven sprocket corresponding to the lower crawler;

[0038] The lower mounting frame is fixedly connected to the frame;

[0039] The lower driving shaft is rotatably connected to the lower mounting frame, and the lower driving sprocket is connected to the lower driving shaft;

[0040] The lower driven shaft is connected to the lower mounting frame, and the lower driven sprocket is rotatably connected to the lower driven shaft;

[0041] The lower crawler is connected to the corresponding lower driving sprocket and the corresponding lower driven sprocket;

[0042] The lower power mechanism is connected to the lower driving shaft and is used to drive the lower driving shaft to rotate, thereby driving the lower driving sprocket to rotate and further driving the lower crawler to move;

[0043] The lower crawler is located below the upper crawler, and the traction channel is located between the upper crawler and the lower crawler.

[0044] Furthermore, the dragging tractor further includes an upper tensioning mechanism for driving the upper driven shaft to move in a direction away from the upper driving shaft and a lower tensioning mechanism for driving the lower driven shaft to move in a direction away from the lower driving shaft;

[0045] The upper tensioning mechanism includes at least two upper tensioning screws;

[0046] An upper sliding groove is provided in the upper mounting frame, and the upper driven shaft is slidably fitted in the upper sliding groove along the front-back direction;

[0047] The upper tensioning screw is threadably connected to the upper driven shaft, and the upper tensioning screw is used to be screwed until it abuts against the upper mounting bracket, thereby driving the upper driven shaft to move in a direction away from the upper driving shaft;

[0048] The lower tensioning mechanism includes at least two lower tensioning screws;

[0049] A lower sliding groove is provided in the lower mounting frame, and the lower driven shaft is slidably fitted in the lower sliding groove along the front-to-back direction;

[0050] The lower tensioning screw is threadably connected to the lower driven shaft, and the lower tensioning screw is used to be screwed until it abuts against the lower mounting frame, thereby driving the lower driven shaft to move in a direction away from the lower driving shaft.

[0051] Furthermore, the dragging tractor further includes a roller shaft, an upper abutment bar corresponding to the upper crawler, and a lower abutment bar corresponding to the lower crawler;

[0052] The upper abutment bar extends in the front-to-rear direction and is connected to the upper mounting frame, and the upper abutment bar is located on the inner side of the corresponding upper crawler and is used to abut the lower end of the corresponding upper crawler downward;

[0053] The lower abutment bar extends in the front-to-rear direction and is connected to the lower mounting frame, and the lower abutment bar is located on the inner side of the corresponding lower crawler and is used to abut the upper end of the corresponding lower crawler upward;

[0054] The roller shaft extends in the left-right direction and is connected to the upper mounting frame. The roller shaft is located on the inner side of the upper crawler and is used to support the upper end of the upper crawler upwards.

[0055] The upper power mechanism includes a first power assembly and a second power assembly;

[0056] The first power assembly and the second power assembly are both connected to the upper mounting frame;

[0057] The first power assembly is in transmission connection with one end of the upper driving shaft and is used to drive the upper driving shaft to rotate;

[0058] The second power assembly is in transmission connection with the other end of the upper driving shaft and is used to drive the upper driving shaft to rotate;

[0059] The lower power mechanism includes a third power assembly and a fourth power assembly;

[0060] The third power assembly and the fourth power assembly are both connected to the lower mounting frame;

[0061] The third power assembly is in transmission connection with one end of the lower driving shaft and is used to drive the lower driving shaft to rotate. The fourth power assembly is in transmission connection with the other end of the lower driving shaft and is used to drive the lower driving shaft to rotate.

[0062] After adopting the above technical solution, when the front end or the rear end of the upper traction mechanism is lifted up, causing the upper traction mechanism to be in a tilted state, the sliding component will slide up and down relative to the frame to its proper position, the lower end of the connecting component will rotate a certain angle relative to the upper traction mechanism, and the upper end of the connecting component will rotate a certain angle relative to the corresponding sliding component, so that the connecting component can adapt to the current position and posture of the sliding component and the upper traction mechanism. The upper traction mechanism and the sliding component are connected by the connecting component. By deflecting the connecting component by a certain angle, the sliding component can be prevented from getting stuck on the frame. Therefore, the sliding component can always slide up and down smoothly, thereby enabling the upper traction mechanism to slide up and down smoothly, allowing the upper traction mechanism to achieve forward and backward tilting without getting stuck, thereby ensuring smooth sliding of the upper traction mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 It is a schematic diagram of the overall structure of the dragging tractor of the present invention;

[0064] Figure 2 This is a schematic diagram of the internal structure of the dragging tractor of the present invention;

[0065] Figure 3 A side view of the interior of the towing tractor of the present invention;

[0066] Figure 4 This is a structural diagram of the upper mounting frame and the connecting mechanism of the present invention;

[0067] Figure 5 It is a cross-sectional view of the connecting mechanism of the utility model;

[0068] Figure 6 This is an exploded view of the assembly of the connection mechanism of the present invention;

[0069] Figure 7 This is a schematic structural diagram of the sliding component of the utility model being connected to the left connecting plate;

[0070] Figure 8 It is a side view of the upper mounting frame of the present invention connected to the connecting mechanism when tilted;

[0071] Figure 9 It is a structural schematic diagram of the upper tensioning mechanism and the lower tensioning mechanism of the utility model. DETAILED DESCRIPTION

[0072] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0073] like Figures 1 to 9 As shown, a dragging tractor comprises a frame 1 and an upper traction mechanism 100, wherein the upper traction mechanism 100 is connected to the frame 1 via at least two connecting mechanisms 200 arranged sequentially from front to back;

[0074] The connecting mechanism 200 includes a connecting component 2 and a sliding component 3;

[0075] The sliding component 3 is connected to the frame 1 in a sliding manner in the up and down direction;

[0076] The upper end of the connecting component 2 is connected to the sliding component 3, and the connecting component 2 is used to rotate a certain angle relative to the sliding component 3;

[0077] The upper traction mechanism 100 is rotatably connected to the lower end of the connecting component 2 .

[0078] Specifically, when the front end portion of the upper traction mechanism 100 is lifted up or the rear end portion is lifted up, causing the upper traction mechanism 100 to be in an inclined state, as shown in FIG. Figure 8 As shown, at this time, the sliding component 3 will slide up and down relative to the frame 1 into place, the lower end of the connecting component 2 will rotate a certain angle relative to the upper traction mechanism 100, and at the same time, the upper end of the connecting component 2 will rotate a certain angle relative to the corresponding sliding component 3, so that the connecting component 2 can adapt to the current position and posture of the sliding component 3 and the upper traction mechanism 100. The upper traction mechanism 100 and the sliding component 3 are connected by the connecting component 2. By deflecting the connecting component 2 at a certain angle, the sliding component 3 can be prevented from getting stuck on the frame 1. Therefore, the sliding component 3 can always slide up and down smoothly, and then the upper traction mechanism 100 can also slide up and down smoothly, so that the upper traction mechanism 100 can be tilted forward and backward without getting stuck, ensuring the smooth sliding of the upper traction mechanism 100.

[0079] In this embodiment, three connecting mechanisms 200 are sequentially provided in the front and rear directions.

[0080] like Figures 1 to 9 As shown, the connecting mechanism 200 may include two sliding components 3, which are arranged side by side, one on the left and one on the right, and are respectively connected to the frame 1 in a sliding manner in the up and down directions;

[0081] The connecting component 2 includes a connecting rod 4, a left connecting plate 5 and a right connecting plate 6;

[0082] The upper traction mechanism 100 is rotatably connected to the connecting rod 4;

[0083] The left end of the connecting rod 4 is connected to the lower end of the left connecting plate 5, and the right end of the connecting rod 4 is connected to the lower end of the right connecting plate 6;

[0084] The upper end of the left connecting plate 5 is connected to the sliding component 3 on the left side, and the left connecting plate 5 is used to rotate a certain angle relative to the sliding component 3 on the left side;

[0085] The upper end of the right connecting plate 6 is connected to the sliding part 3 on the right side, and the right connecting plate 6 is used to rotate a certain angle relative to the sliding part 3 on the right side; in this embodiment, the upper end of the connecting part 2 includes the upper end of the left connecting plate 5 and the upper end of the right connecting plate 6, and the lower end of the connecting part 2 includes the connecting rod 4.

[0086] like Figures 1 to 9 As shown, the upper end of the left connecting plate 5 is provided with a left waist-shaped groove 7, and the left sliding component 3 is provided with a left joint portion 8. The left joint portion 8 is clearance-fitted in the left waist-shaped groove 7, thereby connecting the upper end of the left connecting plate 5 to the left sliding component 3. Moreover, due to the clearance fit between the left joint portion 8 and the left waist-shaped groove 7, the left connecting plate 5 can rotate a certain angle relative to the left sliding component 3.

[0087] The upper end of the right connecting plate 6 is provided with a right waist-shaped groove 9, and the sliding component 3 on the right side is provided with a right joint portion 10. The right joint portion 10 is clearance-fitted in the right waist-shaped groove 9, thereby connecting the upper end of the right connecting plate 6 to the sliding component 3 on the right side, and due to the clearance fit between the right joint portion 10 and the right waist-shaped groove 9, the right connecting plate 6 can rotate a certain angle relative to the sliding component 3 on the right side.

[0088] like Figures 1 to 9 As shown, the frame 1 may include a plurality of guide posts 11 corresponding to the sliding components 3 , and the sliding components 3 are slidably connected to the corresponding guide posts 11 along the up-down direction.

[0089] like Figures 1 to 9 As shown, the dragging tractor may further include a lower traction mechanism 300, a front lifting drive mechanism and a rear lifting drive mechanism;

[0090] The lower traction mechanism 300 is connected to the frame 1 and is located below the upper traction mechanism 100. A traction channel 12 is provided between the upper traction mechanism 100 and the lower traction mechanism 300.

[0091] The front lifting drive mechanism and the rear lifting drive mechanism are both connected to the frame 1;

[0092] The front lifting drive mechanism is connected to the front end of the upper traction mechanism 100 and is used to drive the front end of the upper traction mechanism 100 to move up and down;

[0093] The rear lift drive mechanism is connected to the rear end of the upper traction mechanism 100 and is used to drive the rear end of the upper traction mechanism 100 to move up and down. Specifically, the front lift drive mechanism can independently drive the front end of the upper traction mechanism 100 up and down, and the rear lift drive mechanism can independently drive the rear end of the upper traction mechanism 100 up and down, thereby driving the upper traction mechanism 100 to open and close smoothly. More specifically, the upper traction mechanism 100 can be tilted forward and backward to adapt to different operating requirements.

[0094] like Figures 1 to 9 As shown, the front lifting drive mechanism includes at least two front telescopic cylinders 13 arranged in parallel on the left and right sides. The upper ends of the front telescopic cylinders 13 are hinged to the frame 1, and the lower ends of the front telescopic cylinders 13 are hinged to the front end of the upper traction mechanism 100, so that the front telescopic cylinders 13 drive the front end of the upper traction mechanism 100 to move up and down.

[0095] The rear lifting drive mechanism includes at least two rear telescopic cylinders 14 arranged in parallel on the left and right sides. The upper ends of the rear telescopic cylinders 14 are hinged to the frame 1, and the lower ends of the rear telescopic cylinders 14 are hinged to the rear end of the upper traction mechanism 100, so that the rear telescopic cylinders 14 drive the rear end of the upper traction mechanism 100 to move up and down.

[0096] like Figures 1 to 9 As shown, an intermediate lifting drive mechanism is further provided between the front lifting drive mechanism and the rear lifting drive mechanism;

[0097] The intermediate lifting drive mechanism includes at least two intermediate telescopic cylinders 15 arranged in parallel on the left and right, the upper ends of the intermediate telescopic cylinders 15 are hinged on the frame 1, and the lower ends of the intermediate telescopic cylinders 15 are hinged to the middle part of the upper traction mechanism 100; specifically, there are three front telescopic cylinders 13, three rear telescopic cylinders 14 and three intermediate telescopic cylinders 15 arranged in parallel on the left and right, and the front telescopic cylinders 13, the rear telescopic cylinders 14 and the intermediate telescopic cylinders 15 can be any one of a pneumatic cylinder, a hydraulic cylinder and an electric cylinder.

[0098] like Figures 1 to 9 As shown, the upper traction mechanism 100 may be, but is not limited to, the following structure, which includes an upper mounting frame 16, an upper driving shaft 17, an upper driven shaft 18, an upper power mechanism 19, at least one upper crawler 20, an upper driving sprocket 21 corresponding to the upper crawler 20, and an upper driven sprocket 22 corresponding to the upper crawler 20;

[0099] The upper driving shaft 17 is rotatably connected to the upper mounting frame 16 , and the upper driving sprocket 21 is connected to the upper driving shaft 17 ;

[0100] The upper driven shaft 18 is connected to the upper mounting frame 16 , and the upper driven sprocket 22 is rotatably connected to the upper driven shaft 18 ;

[0101] The upper crawler 20 is connected to the corresponding upper driving sprocket 21 and the corresponding upper driven sprocket 22;

[0102] The upper power mechanism 19 is connected to the upper driving shaft 17 and is used to drive the upper driving shaft 17 to rotate, thereby driving the upper driving sprocket 21 to rotate and further driving the upper crawler 20 to move;

[0103] The upper mounting frame 16 is rotatably connected to the lower end of the connecting component 2;

[0104] The front lifting drive mechanism is connected to the front end of the upper mounting frame 16 and is used to drive the front end of the upper mounting frame 16 to move up and down;

[0105] The rear lifting drive mechanism is connected to the rear end of the upper mounting frame 16 and is used to drive the rear end of the upper mounting frame 16 to move up and down;

[0106] The lower traction mechanism 300 may be, for example but not limited to, the following structure, which includes a lower mounting frame 23, a lower driving shaft 24, a lower driven shaft 25, a lower power mechanism 26, at least one lower crawler 27, a lower driving sprocket 28 corresponding to the lower crawler 27, and a lower driven sprocket 29 corresponding to the lower crawler 27;

[0107] The lower mounting frame 23 is fixedly connected to the frame 1. In this embodiment, the lower mounting frame 23 is welded to the frame 1.

[0108] The lower driving shaft 24 is rotatably connected to the lower mounting frame 23 , and the lower driving sprocket 28 is connected to the lower driving shaft 24 ;

[0109] The lower driven shaft 25 is connected to the lower mounting frame 23, and the lower driven sprocket 29 is rotatably connected to the lower driven shaft 25;

[0110] The lower crawler 27 is connected to the corresponding lower driving sprocket 28 and the corresponding lower driven sprocket 29;

[0111] The lower power mechanism 26 is connected to the lower driving shaft 24 and is used to drive the lower driving shaft 24 to rotate, thereby driving the lower driving sprocket 28 to rotate and further driving the lower crawler 27 to move;

[0112] The lower crawler 27 is located below the upper crawler 20, and the traction channel 12 is located between the upper crawler 20 and the lower crawler 27. Specifically, a plurality of upper crawlers 20 and lower crawlers 27 are arranged side by side on the left and right sides, and the upper crawlers 20 and lower crawlers 27 correspond to each other. Each upper crawler 20 corresponds to two upper driving sprockets 21 and two upper driven sprockets 22, and each lower crawler 27 corresponds to two lower driving sprockets 28 and two lower driven sprockets 29. More specifically, the upper mounting frame 16 is rotatably connected to the connecting rod 4 in the connecting component 2. The lower end of the front telescopic cylinder 13 is hinged to the front end of the upper mounting frame 16, the lower end of the rear telescopic cylinder 14 is hinged to the rear end of the upper mounting frame 16, and the lower end of the middle telescopic cylinder 15 is hinged to the middle portion of the upper mounting frame 16.

[0113] like Figures 1 to 9 As shown, the dragging tractor may further include an upper tensioning mechanism for driving the upper driven shaft 18 to move in a direction away from the upper driving shaft 17 and a lower tensioning mechanism for driving the lower driven shaft 25 to move in a direction away from the lower driving shaft 24;

[0114] The upper tensioning mechanism includes at least two upper tensioning screws 30;

[0115] An upper slide groove 31 is provided in the upper mounting frame 16, and the upper driven shaft 18 is slidably fitted in the upper slide groove 31 along the front-to-back direction;

[0116] The upper tensioning screw 30 is threadedly connected to the upper driven shaft 18. The upper tensioning screw 30 is used to be screwed until it abuts against the upper mounting frame 16, thereby driving the upper driven shaft 18 to move away from the upper driving shaft 17, thereby tensioning the upper crawler 20.

[0117] The lower tensioning mechanism includes at least two lower tensioning screws 32;

[0118] The lower mounting frame 23 is provided with a lower sliding groove 33, and the lower driven shaft 25 is slidably fitted in the lower sliding groove 33 along the front-to-back direction;

[0119] The lower tensioning screw 32 is threadedly connected to the lower driven shaft 25 , and the lower tensioning screw 32 is used to be screwed until it abuts against the lower mounting frame 23 and thereby drives the lower driven shaft 25 to move away from the lower driving shaft 24 , thereby tensioning the lower crawler 27 .

[0120] like Figures 1 to 9 As shown, the dragging tractor may further include a roller shaft 34, an upper abutment bar 35 corresponding to the upper crawler 20, and a lower abutment bar 36 corresponding to the lower crawler 27;

[0121] The upper abutment bar 35 extends in the front-to-rear direction and is connected to the upper mounting frame 16. The upper abutment bar 35 is located on the inner side of the corresponding upper crawler 20 and is used to abut the lower end of the corresponding upper crawler 20 downward.

[0122] The lower abutment bar 36 extends in the front-to-rear direction and is connected to the lower mounting frame 23. The lower abutment bar 36 is located on the inner side of the corresponding lower crawler 27 and is used to abut the upper end of the corresponding lower crawler 27 upward.

[0123] The roller shaft 34 extends in the left-right direction and is connected to the upper mounting frame 16. The roller shaft 34 is located on the inner side of the upper crawler 20 and is used to support the upper end of the upper crawler 20 upward.

[0124] The upper power mechanism 19 includes a first power assembly and a second power assembly;

[0125] The first power assembly and the second power assembly are both connected to the upper mounting frame 16;

[0126] The first power assembly is in transmission connection with one end of the upper driving shaft 17 and is used to drive the upper driving shaft 17 to rotate;

[0127] The second power assembly is in transmission connection with the other end of the upper driving shaft 17 and is used to drive the upper driving shaft 17 to rotate;

[0128] The lower power mechanism 26 includes a third power assembly and a fourth power assembly;

[0129] The third power assembly and the fourth power assembly are both connected to the lower mounting frame 23;

[0130] The third power assembly is in transmission connection with one end of the lower driving shaft 24 and is used to drive the lower driving shaft 24 to rotate;

[0131] The fourth power assembly is transmission-connected to the other end of the lower driving shaft 24 and is used to drive the lower driving shaft 24 to rotate; specifically, the first power assembly, the second power assembly, the third power assembly and the fourth power assembly respectively include a motor and a reducer.

[0132] In summary, when the front end or rear end of the upper traction mechanism 100 is lifted, causing the upper traction mechanism 100 to be in a tilted state, the sliding member 3 will slide up and down relative to the frame 1 to its proper position, and the lower end of the connecting member 2 will rotate a certain angle relative to the upper traction mechanism 100. At the same time, the upper end of the connecting member 2 will rotate a certain angle relative to the corresponding sliding member 3, so that the connecting member 2 can adapt to the current position and posture of the sliding member 3 and the upper traction mechanism 100. The upper traction mechanism 100 and the sliding member 3 are connected by the connecting member 2. By deflecting the connecting member 2 by a certain angle, the sliding member 3 can be prevented from getting stuck on the frame 1. Therefore, the sliding member 3 can always slide up and down smoothly, thereby allowing the upper traction mechanism 100 to slide up and down smoothly, allowing the upper traction mechanism 100 to tilt forward and backward without getting stuck, thereby ensuring smooth sliding of the upper traction mechanism 100.

[0133] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A dragging tractor, characterized in that: It comprises a frame (1) and an upper traction mechanism (100), wherein the upper traction mechanism (100) is connected to the frame (1) via at least two connection mechanisms (200) arranged sequentially from front to back; The connecting mechanism (200) comprises a connecting component (2) and a sliding component (3); The sliding component (3) is connected to the frame (1) in a sliding manner in an up-down direction; The upper end of the connecting component (2) is connected to the sliding component (3), and the connecting component (2) is used to rotate at a certain angle relative to the sliding component (3); The upper traction mechanism (100) is rotatably connected to the lower end of the connecting component (2).

2. The dragging tractor according to claim 1, characterized in that: The connecting mechanism (200) comprises two sliding components (3), the two sliding components (3) being arranged side by side, one on the left and one on the right, and respectively connected to the frame (1) in a sliding manner in an up-down direction; The connecting component (2) comprises a connecting rod (4), a left connecting plate (5) and a right connecting plate (6); The upper traction mechanism (100) is rotatably connected to the connecting rod (4); The left end of the connecting rod (4) is connected to the lower end of the left connecting plate (5), and the right end of the connecting rod (4) is connected to the lower end of the right connecting plate (6); The upper end portion of the left connecting plate (5) is connected to the sliding component (3) on the left side, and the left connecting plate (5) is used to rotate at a certain angle relative to the sliding component (3) on the left side; The upper end of the right connecting plate (6) is connected to the sliding component (3) on the right side, and the right connecting plate (6) is used to rotate at a certain angle relative to the sliding component (3) on the right side.

3. The dragging tractor according to claim 2, characterized in that: The upper end of the left connecting plate (5) is provided with a left waist-shaped groove (7), and the left sliding component (3) is provided with a left joint portion (8), and the left joint portion (8) is loosely fitted in the left waist-shaped groove (7); The upper end of the right connecting plate (6) is provided with a right waist-shaped groove (9), and the sliding component (3) on the right side is provided with a right joint portion (10), and the right joint portion (10) is loosely fitted in the right waist-shaped groove (9).

4. The dragging tractor according to claim 2, characterized in that: The frame (1) comprises a plurality of guide posts (11) corresponding to the sliding components (3), and the sliding components (3) are slidably connected to the corresponding guide posts (11) in an up-down direction.

5. The dragging tractor according to claim 1, characterized in that: It also includes a lower traction mechanism (300), a front lifting drive mechanism and a rear lifting drive mechanism; The lower traction mechanism (300) is connected to the frame (1) and is located below the upper traction mechanism (100), and a traction channel (12) is provided between the upper traction mechanism (100) and the lower traction mechanism (300); The front lifting drive mechanism and the rear lifting drive mechanism are both connected to the frame (1); The front lifting drive mechanism is connected to the front end of the upper traction mechanism (100) and is used to drive the front end of the upper traction mechanism (100) to move up and down; The rear lifting drive mechanism is connected to the rear end portion of the upper traction mechanism (100) and is used to drive the rear end portion of the upper traction mechanism (100) to move up and down.

6. The dragging tractor according to claim 5, characterized in that: The front lifting drive mechanism comprises at least two front telescopic cylinders (13) arranged in parallel on the left and right sides, the upper ends of the front telescopic cylinders (13) are hinged to the frame (1), and the lower ends of the front telescopic cylinders (13) are hinged to the front end of the upper traction mechanism (100); The rear lifting drive mechanism comprises at least two rear telescopic cylinders (14) arranged in parallel on the left and right sides, the upper ends of the rear telescopic cylinders (14) are hinged to the frame (1), and the lower ends of the rear telescopic cylinders (14) are hinged to the rear end of the upper traction mechanism (100).

7. The dragging tractor according to claim 6, characterized in that: An intermediate lifting drive mechanism is further provided between the front lifting drive mechanism and the rear lifting drive mechanism; The intermediate lifting drive mechanism comprises at least two intermediate telescopic cylinders (15) arranged in parallel on the left and right sides, the upper ends of the intermediate telescopic cylinders (15) are hinged on the frame (1), and the lower ends of the intermediate telescopic cylinders (15) are hinged to the middle part of the upper traction mechanism (100).

8. The dragging tractor according to claim 5, characterized in that: The upper traction mechanism (100) comprises an upper mounting frame (16), an upper driving shaft (17), an upper driven shaft (18), an upper power mechanism (19), at least one upper crawler (20), an upper driving sprocket (21) corresponding to the upper crawler (20), and an upper driven sprocket (22) corresponding to the upper crawler (20); The upper driving shaft (17) is rotatably connected to the upper mounting frame (16), and the upper driving sprocket (21) is connected to the upper driving shaft (17); The upper driven shaft (18) is connected to the upper mounting frame (16), and the upper driven sprocket (22) is rotatably connected to the upper driven shaft (18); The upper crawler (20) is connected to the corresponding upper driving sprocket (21) and the corresponding upper driven sprocket (22); The upper power mechanism (19) is connected to the upper driving shaft (17) and is used to drive the upper driving shaft (17) to rotate, thereby driving the upper driving sprocket (21) to rotate and thereby driving the upper crawler (20) to move; The upper mounting frame (16) is rotatably connected to the lower end of the connecting component (2); The front lifting drive mechanism is connected to the front end of the upper mounting frame (16) and is used to drive the front end of the upper mounting frame (16) to move up and down; The rear lifting drive mechanism is connected to the rear end of the upper mounting frame (16) and is used to drive the rear end of the upper mounting frame (16) to move up and down; The lower traction mechanism (300) includes a lower mounting frame (23), a lower driving shaft (24), a lower driven shaft (25), a lower power mechanism (26), at least one lower crawler (27), a lower driving sprocket (28) corresponding to the lower crawler (27), and a lower driven sprocket (29) corresponding to the lower crawler (27); The lower mounting frame (23) is fixedly connected to the frame (1); The lower driving shaft (24) is rotatably connected to the lower mounting frame (23), and the lower driving sprocket (28) is connected to the lower driving shaft (24); The lower driven shaft (25) is connected to the lower mounting frame (23), and the lower driven sprocket (29) is rotatably connected to the lower driven shaft (25); The lower crawler belt (27) is connected to the corresponding lower driving sprocket (28) and the corresponding lower driven sprocket (29); The lower power mechanism (26) is connected to the lower driving shaft (24) and is used to drive the lower driving shaft (24) to rotate, thereby driving the lower driving sprocket (28) to rotate and further driving the lower crawler (27) to move; The lower crawler (27) is located below the upper crawler (20), and the traction channel (12) is located between the upper crawler (20) and the lower crawler (27).

9. The dragging tractor according to claim 8, characterized in that: It also includes an upper tensioning mechanism for driving the upper driven shaft (18) to move in a direction away from the upper driving shaft (17) and a lower tensioning mechanism for driving the lower driven shaft (25) to move in a direction away from the lower driving shaft (24); The upper tensioning mechanism comprises at least two upper tensioning screws (30); An upper sliding groove (31) is provided in the upper mounting frame (16), and the upper driven shaft (18) is slidably fitted in the upper sliding groove (31) along the front-back direction; The upper tensioning screw (30) is threadably connected to the upper driven shaft (18), and the upper tensioning screw (30) is used to be screwed until it abuts against the upper mounting frame (16) and thereby drive the upper driven shaft (18) to move in a direction away from the upper driving shaft (17); The lower tensioning mechanism includes at least two lower tensioning screws (32); A lower sliding groove (33) is provided in the lower mounting frame (23), and the lower driven shaft (25) is slidably fitted in the lower sliding groove (33) along the front-back direction; The lower tensioning screw (32) is threadedly connected to the lower driven shaft (25), and the lower tensioning screw (32) is used to be screwed until it abuts against the lower mounting frame (23) and thereby drive the lower driven shaft (25) to move in a direction away from the lower driving shaft (24).

10. The dragging tractor according to claim 8, characterized in that: It also includes a roller shaft (34), an upper abutment bar (35) corresponding to the upper crawler (20), and a lower abutment bar (36) corresponding to the lower crawler (27); The upper abutment bar (35) extends in the front-rear direction and is connected to the upper mounting frame (16). The upper abutment bar (35) is located on the inner side of the corresponding upper crawler (20) and is used to abut the lower end of the corresponding upper crawler (20) downward. The lower abutment bar (36) extends in the front-to-rear direction and is connected to the lower mounting frame (23). The lower abutment bar (36) is located on the inner side of the corresponding lower crawler (27) and is used to abut against the upper end of the corresponding lower crawler (27). The roller shaft (34) extends in the left-right direction and is connected to the upper mounting frame (16). The roller shaft (34) is located on the inner side of the upper crawler (20) and is used to support the upper end of the upper crawler (20) upward. The upper power mechanism (19) comprises a first power assembly and a second power assembly; The first power assembly and the second power assembly are both connected to the upper mounting frame (16); The first power assembly is in transmission connection with one end of the upper driving shaft (17) and is used to drive the upper driving shaft (17) to rotate; The second power assembly is in transmission connection with the other end of the upper driving shaft (17) and is used to drive the upper driving shaft (17) to rotate; The lower power mechanism (26) includes a third power assembly and a fourth power assembly; The third power assembly and the fourth power assembly are both connected to the lower mounting frame (23); The third power assembly is in transmission connection with one end of the lower driving shaft (24) and is used to drive the lower driving shaft (24) to rotate; The fourth power assembly is in transmission connection with the other end of the lower driving shaft (24) and is used to drive the lower driving shaft (24) to rotate.

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