CN116831826A - Booster stretcher vehicle - Google Patents

Abstract

The invention discloses a booster stretcher, which comprises a stretcher bed, a pair of left-right X-shaped lifting arms and a crawler travelling mechanism, wherein the crawler travelling mechanism comprises crawler frames on two sides, crawler wheels and crawler load-bearing follower wheels, the crawler frames on two sides are fixedly connected through front and rear arranged main shafts, the end parts of the main shafts are rotatably provided with the crawler wheels, a crawler is sleeved between the two crawler wheels on each side, the crawler frames are rotatably provided with a plurality of crawler load-bearing follower wheels which keep contact with the crawler, and the inner sides of the crawler frames are fixedly provided with bottom guide rail pieces; the lower ends of two sides of the stretcher are fixedly provided with top guide rail pieces; the X-shaped lifting arm comprises a pair of lifting arms which are arranged in a crossing mode. The stretcher has reasonable structural design, can slide downwards along the steps of the stairs, does not need to laboriously lift the whole stretcher, is convenient to operate and use, saves time and labor, can fold the stretcher, is convenient to store and enter the ambulance, and has small occupied space.

Description

Booster stretcher vehicle

Technical Field

The invention relates to the technical field of stretchers, in particular to a booster stretcher.

Background

Stretcher is usually a handling apparatus used when a patient or wounded cannot move freely, so that the patient and wounded can lie down conveniently. The traditional stretcher has a simple structure and is mainly transported by being lifted by two persons, but because the weight of the stretcher is heavier and the weight of a patient is added, a great amount of physical strength is required to be consumed during transportation, so that the traditional stretcher is only suitable for transportation on a flat ground in a short distance. When long-distance transportation is needed, for convenience in transportation, a stretcher is usually adopted to transport patients, but when the patients without an elevator building need stretcher transportation, the existing stretcher cannot automatically go downstairs, cannot be transported, and only traditional stretcher manual transportation can be adopted. In recent years, along with the improvement of the living standard of people, the number of obese people is increasing, and when obese patients need to be carried by a stretcher to go downstairs, a great deal of manpower is required, but the personnel arranged in an ambulance are limited, so that the patients can be rapidly carried to go downstairs, and the rescue personnel are difficult to finish.

At present, a plurality of stretcher vehicles capable of automatically going upstairs and downstairs are arranged on the market, and a motor is used for driving a travelling mechanism to go upstairs and downstairs, but the stretcher vehicles are about to be carried upstairs by four hundred jin emergency personnel, and can only travel upstairs by self, and the gold rescue time of a patient is easily missed due to the fact that the upstairs speed is relatively low, so that the daily use requirement cannot be met.

Disclosure of Invention

The invention aims to provide a booster stretcher vehicle so as to solve the problems in the background art.

In order to achieve the above purpose, the present invention provides the following technical solutions:

the booster stretcher comprises a stretcher bed, a pair of left-right X-shaped lifting arms and a crawler travelling mechanism, wherein the crawler travelling mechanism comprises crawler frames on two sides, crawler wheels and crawler load-bearing follower wheels, the crawler frames on two sides are fixedly connected through front and rear arranged main shafts, the end parts of the main shafts are rotatably provided with the crawler wheels, the crawler wheels on each side are sleeved and connected between the two crawler wheels, the crawler frames are rotatably provided with a plurality of crawler load-bearing follower wheels which are kept in contact with the crawler, and the inner sides of the crawler frames are fixedly provided with bottom guide rail pieces;

the lower ends of two sides of the stretcher are fixedly provided with top guide rail pieces;

x type lifting arm includes the lifting arm of a pair of alternately setting, and detachable round pin axle spare normal running fit is connected in the lifting arm middle part of alternately setting, and horizontal parallel lifting arm upper end is through last stabilizer bar fixed connection, and horizontal parallel lifting arm lower extreme is through lower stabilizer bar fixed connection, and the upper end of lifting arm is through the gyro wheel of rotation installation and top guide rail spare horizontal slip fit connection, and the tip of lower stabilizer bar is through the gyro wheel of rotation installation and bottom guide rail spare horizontal slip fit connection.

Preferably, the bottom guide rail piece is provided with a bottom transverse guide rail groove matched with the roller, and the bottom transverse guide rail groove is provided with at least two bottom limit grooves;

the top guide rail piece on be provided with gyro wheel complex top transverse guide rail groove, offered two at least top spacing grooves on the top transverse guide rail groove.

Preferably, the number of the bottom guide rail pieces is 4, and bottom limit grooves are formed in two ends of each bottom guide rail piece;

the number of the top guide rail pieces is 4, top limit grooves are formed in the two ends of each top guide rail piece, a working groove is formed in the middle of each guide rail piece, and a clamping groove is formed between the top limit groove and the working groove on the outer side;

the bottom limit groove on the outer side of the guide rail piece is correspondingly arranged right below the clamping groove on the guide rail piece.

Preferably, the roller limiting mechanism is arranged on the top guide rail piece corresponding to each top limiting groove, the roller limiting mechanism comprises a limiting hook, a limiting spring and a fixing pin, the limiting hooks are arranged on the top guide rail piece in a vertical sliding mode, the fixing pin is fixed on the top guide rail piece, one end of the limiting spring is connected with the fixing pin, and the other end of the limiting spring is abutted to the limiting hook.

Preferably, the crawler frame comprises a frame seat plate and an outer stabilizing frame, the end part of the main shaft penetrates through the corresponding frame seat plate, a plurality of auxiliary shafts are fixedly installed on the outer side of the frame seat plate, the crawler loading follower wheel is rotatably installed on the corresponding auxiliary shaft, and the outer stabilizing frame is fixedly connected with the end part of the main shaft and the end part of the auxiliary shaft.

Preferably, the crawler belt tensioning mechanism comprises a tensioning seat plate fixed with the crawler belt frame, a tensioning rod and a tensioning wheel which is in abutting connection with the crawler belt, wherein the tensioning wheel is rotatably arranged on a tensioning wheel shaft, and the end part of the tensioning wheel shaft is sleeved with the tensioning rod in a limiting manner;

the vertical tensioning guide slot has been seted up to tensioning bedplate upper end, tensioning shaft sliding fit in vertical tensioning guide slot, fixedly connected with lock nut on the locking bedplate, the free end activity of tensioning pole passes the locking bedplate, and the free end of tensioning pole passes through screw thread section and two lock nut cooperation of screwing, and two lock nuts laminate at locking bedplate upper and lower lateral wall respectively.

Preferably, the support frame that still sets up around including, fixed mounting has a pair of support swing arm on the support frame, and the one end rotation cover that the support swing arm kept away from the support frame is adorned on the main shaft, and the main shaft is last still to be equipped with the torsional spring, and the one end and the main shaft of torsional spring are fixed, and the other end and the support swing arm of torsional spring are fixed, a plurality of universal balls are still installed in the bottom of support frame distribution.

Preferably, the device further comprises a positioning rod, one end of the positioning rod is rotatably sleeved on the main shaft, and the other end of the positioning rod is provided with an arc clamping sleeve for being clamped on the lower stabilizing rod.

Compared with the prior art, the invention has the beneficial effects that: the whole crawler travelling mechanism is reasonable in structural design, in the use process, emergency patients are bound on the stretcher, the crawler travelling mechanism can be contacted with the stair steps, a rescue worker only needs to pull the stretcher to slide downwards along the stair steps, the whole stretcher is not required to be lifted up in a laborious manner, and the crawler travelling mechanism is convenient to operate and use and saves time and labor;

the X-shaped lifting arm comprises a pair of lifting arms which are arranged in a crossing way, when the stretcher is not used, the stretcher is folded by adjusting the positions of the rollers at the end parts of the lifting arms in the top transverse guide rail groove and the bottom transverse guide rail groove, so that the stretcher is conveniently stored into the ambulance, and the occupied space is small;

when the roller enters the corresponding top limit groove, the limit hook is clamped into the roller groove of the roller under the elastic force of the limit spring, so that the lateral movement of the roller is limited, the limit effect is achieved, the elastic force of the limit spring can be overcome when the roller is in contact with the limit hook, and the limit hook can be pushed upwards to release the limit;

when the stretcher is in a high-position state, the positioning rod is rotated, so that the arc clamping sleeve is clamped on the lower stabilizing rod, the lower end of the X-shaped lifting arm can be locked, and the use safety is ensured;

the tension degree of the crawler belt is conveniently adjusted through the arrangement of the crawler belt tensioning mechanism; at the stair corner, in order to turn to more nimble, can overcome the elasticity of torsional spring, step on the support frame for universal ball and ground contact, track and ground break away from simultaneously can realize nimble turning to, transport convenient operation.

The stretcher has reasonable structural design, can slide downwards along the steps of the stairs, does not need to laboriously lift the whole stretcher, is convenient to operate and use, saves time and labor, can fold the stretcher, is convenient to store and enter the ambulance, and has small occupied space.

Drawings

FIG. 1 is a schematic view of a bottom perspective of a booster stretcher;

FIG. 2 is a schematic top perspective view of the booster stretcher;

FIG. 3 is a schematic side view of a booster stretcher;

FIG. 4 is an enlarged schematic view of the structure of the booster stretcher at A;

FIG. 5 is an enlarged schematic view of the structure of the booster stretcher at B;

FIG. 6 is a schematic structural view of a support frame in the booster stretcher;

FIG. 7 is a schematic side elevational view of the top rail member and bottom rail member of the booster stretcher;

FIG. 8 is a schematic view of the structure of the booster stretcher in a folded state;

FIG. 9 is a schematic view of the structure of the booster stretcher in a horizontally offset state;

fig. 10 is a schematic view of the structure of the booster stretcher in an inclined state.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1: referring to fig. 1-3, the booster stretcher comprises a stretcher bed 1, a pair of left and right X-shaped lifting arms 3 and a crawler travelling mechanism 4, wherein the crawler travelling mechanism 4 comprises crawler frames on two sides, crawler wheels 42 and crawler load follower wheels 45, the crawler frames on two sides are fixedly connected through front and rear arranged main shafts 46, the end parts of the main shafts 46 are rotatably provided with the crawler wheels 42, a crawler 43 is sleeved between the two crawler wheels 42 on each side, a plurality of crawler load follower wheels 45 which are kept in contact with the crawler 43 are rotatably arranged on the crawler frames, and a bottom guide rail piece 5 is fixedly arranged on the inner sides of the crawler frames;

the lower ends of the two sides of the stretcher 1 are fixedly provided with top guide rail pieces 2; specifically, the bottom of the stretcher 1 is fixed with a plurality of longitudinal bottom plates 11, and the top rail member 2 is fixedly mounted on the lower surface of the longitudinal bottom plates 11.

The X-shaped lifting arm 3 comprises a pair of lifting arms 31 which are arranged in a crossed mode, the middle parts of the lifting arms 31 which are arranged in a crossed mode are connected in a running fit mode through detachable pin shaft pieces 32, the upper ends of the lifting arms 31 which are parallel to each other left and right are fixedly connected through upper stabilizing rods 34, the lower ends of the lifting arms 31 which are parallel to each other left and right are fixedly connected through lower stabilizing rods 33, the upper ends of the lifting arms 31 are connected with the top guide rail pieces 2 in a horizontal sliding fit mode through rollers 35 which are installed in a rotating mode, and the end portions of the lower stabilizing rods 33 are connected with the bottom guide rail pieces 5 in a horizontal sliding fit mode through rollers 35 which are installed in a rotating mode.

Specifically, as shown in fig. 1 and 7, the number of the bottom rail members 5 is 4, and bottom limit grooves 51 are provided at both ends of each bottom rail member 5; the number of the top guide rail pieces 2 is 4, top limit grooves 21 are formed in two ends of each top guide rail piece 2, a working groove 22 is formed in the middle of each top guide rail piece 2, and a clamping groove 23 is formed between the top limit groove 21 and the working groove 22 on the outer side of each top guide rail piece 2; when the bottom rail member 5 is installed, the bottom limit groove 51 on the outer side of the bottom rail member 5 is correspondingly arranged right below the clamping groove 23 on the top rail member 2.

The working principle of the invention is as follows: referring to fig. 8, in the initial state, the stretcher 1 and the crawler belt running mechanism 4 are in a folded state, the roller 35 at the end of the lower stabilizer bar 33 is positioned in the bottom limit groove 51 at the outer side of the bottom guide rail member 5, and the roller 35 near the end of the upper stabilizer bar 34 is positioned in the clamping groove 23;

referring to fig. 3, in use, the stretcher 1 is pulled upward, so that the roller 35 at the end of the lower stabilizer bar 33 is positioned in the bottom limiting groove 51 at the inner side of the bottom rail member 5, and the roller 35 near the end of the upper stabilizer bar 34 is positioned in the working groove 22, and the stretcher is in a normal working state.

Referring to fig. 9, when the stretcher descends to the rest platform along stairs, the front and rear supporting frames 6 are stepped down to enable the universal balls 64 of the supporting frames to contact with the ground and lift the crawler traveling mechanism 4, and then the stretcher 1 is pulled horizontally to enable one group of rollers 35 close to the end of the upper stabilizer bar 34 to move from the working groove 22 to the clamping groove 23, so as to adjust the horizontal displacement of the stretcher 1, referring to fig. 10, if the horizontal displacement of the stretcher 1 cannot turn or is limited by the height of the stair railing after being adjusted, the position of the rollers 35 at the end of the upper stabilizer bar 34 is adjusted according to the situation, the pin shaft piece 32 can be pulled down, one end of the stretcher 1, which needs to go over the obstacle, is lifted, so that the stretcher 1 is in an inclined state, so that the stretcher is convenient to pass through the rest platform, and care needs to be taken that in order to ensure the stability of the stretcher, the rollers 35 at the end of the upper stabilizer bar 34 are simultaneously locked in the working groove 22 or simultaneously locked in the limiting groove 21, when the horizontal displacement of the stretcher 1 is adjusted, the rollers 35 at the end of the upper stabilizer bar 34 are simultaneously locked in the limiting groove 21, namely, the rollers 35 at the end of the upper stabilizer bar 34 are locked in the limiting groove 21 or both sides are locked in the limiting groove 2. Obviously, in actual use, since the stretcher 1 is in an inclined state, the stretcher 1 should be provided with a safety binding belt, and the patient is bound and positioned by the safety binding belt, so that the patient is prevented from slipping down.

The structural design of whole crawler-belt running gear 4 is reasonable, and in the use, emergency patient binds at stretcher 1, and crawler-belt running gear 4 can contact with the stair step, and the ambulance personnel only need to stimulate stretcher 1, can down slide along the stair step, need not to laboriously lift up whole stretcher, operation convenient to use, labour saving and time saving.

As a further scheme, roller limiting mechanisms are mounted on the top rail member 2 corresponding to each top limiting groove 21, each roller limiting mechanism comprises a limiting hook 26, a limiting spring 25 and a fixing pin 24, the limiting hooks 26 are mounted on the top rail member 2 in a vertically sliding mode, the fixing pins 24 are fixed on the top rail member 2, one end of each limiting spring 25 is connected with each fixing pin 24, and the other end of each limiting spring 25 abuts against each limiting hook 26. When the roller enters the corresponding top limit groove 21, the limit hook 26 is clamped into the wheel groove of the roller under the elastic force of the limit spring 25, so that the lateral movement of the roller is limited, the limit effect is achieved, and when the roller is in contact limit, the elastic force of the limit spring 25 can be overcome, the limit hook 26 is pushed upwards, and the limit can be released.

In this embodiment, the track frame includes a frame seat 41 and an outer stabilizer 44, the end of the main shaft 46 passes through the corresponding frame seat 41, a plurality of auxiliary shafts are fixedly mounted on the outer side of the frame seat 41, the track load follower wheel 45 is rotatably mounted on the corresponding auxiliary shaft 47, and the outer stabilizer 44 is fixedly connected with the end of the main shaft 46 and the end of the auxiliary shaft 47. The crawler frame has reasonable structural design, and the end parts of the main shaft 46 and the auxiliary shaft 47 can be fixed and limited through the outer stabilizing frame 44, so that the stable operation of the crawler wheels 42 and the crawler load follower wheels 45 is ensured.

The embodiment further comprises a positioning rod 7, one end of the positioning rod 7 is rotatably sleeved on the main shaft 46, and the other end of the positioning rod 7 is provided with an arc clamping sleeve 71 for clamping on the lower stabilizing rod 33. When the stretcher is in a high-position state, the positioning rod 7 is rotated, so that the arc clamping sleeve 71 is clamped on the lower stabilizing rod 33, the lower end of the X-shaped lifting arm 3 can be locked, and the use safety is ensured.

Example 2: referring to fig. 6, the booster stretcher is different from embodiment 1 in that the booster stretcher further comprises a track tensioning mechanism 8, the track tensioning mechanism 8 comprises a tensioning seat plate 82 fixed with a track frame, a tensioning rod 84 and a tensioning wheel 81 used for being in abutting connection with a track 43, the tensioning wheel 81 is rotatably installed on a tensioning wheel shaft, and the end part of the tensioning wheel shaft is sleeved with the tensioning rod 84 in a limiting manner;

the vertical tensioning guide slot 85 has been seted up to tensioning bedplate 82 upper end, and tensioning shaft sliding fit is in vertical tensioning guide slot 85, still fixedly connected with locking bedplate 83 on the tensioning bedplate 82 lateral wall, the free end activity of tensioning rod 84 passes locking bedplate 83, and the free end of tensioning rod 84 passes through screw thread section and two locking nuts 86 cooperation of screwing, and two locking nuts 86 laminate at locking bedplate 83 upper and lower lateral wall respectively.

When the tensioning device is specifically arranged and installed, two groups of tensioning seat plates 82 and tensioning rods 84 can be arranged and are respectively positioned at two ends of the tensioning wheel 81, when the tensioning wheel 81 needs to ascend to tightly prop against the crawler 43, the lower locking nut 86 is firstly rotated to enable the lower locking nut 86 to be separated from the locking seat plate 83 by a certain distance, and then the upper locking nut 86 is screwed until the two locking nuts 86 are attached to the locking seat plate 83, and the adjustment and the fixation are completed; by setting the track tensioning mechanism 8, the tension of the track 43 is conveniently adjusted.

Of course, other similar structures of the track tensioning mechanism can be adopted, as shown in fig. 5, the tensioning seat plate 82 and the tensioning rod 84 are only provided with one group and are located on the outer side, the lower end of the tensioning seat plate 82 is welded and fixed with the outer stabilizing frame 44 of the track frame, a plurality of tensioning shaft holes are distributed on the frame seat plate 41 in the height direction, one end of the tensioning wheel shaft can be inserted into the tensioning shaft hole with proper height during specific installation, then the tensioning rod 84 is sleeved at the other end of the tensioning wheel shaft, and finally, two locking nuts 86 are screwed for locking.

Example 3: referring to fig. 1, 3 and 6, the booster stretcher is different from embodiment 2 in that the booster stretcher further comprises a support frame 6 arranged front and back, a pair of support swing arms 61 are fixedly mounted on the support frame 6, one ends of the support swing arms 61 away from the support frame 6 are rotatably sleeved on the main shaft 46, a torsion spring is further sleeved on the main shaft 46, one ends of the torsion spring are fixed with the main shaft 46, the other ends of the torsion spring are fixed with the support swing arms 61, and a plurality of universal balls 64 are further distributed and mounted at the bottom of the support frame 6.

The crawler traveling mechanism 4 can steer but not flexibly enough, so that the power-assisted stretcher can be lifted at the corner of the stairs for more flexible steering, the supporting frame 6 is stepped on against the elasticity of the torsion spring, the universal balls 64 are contacted with the ground, the crawler 43 is separated from the ground, flexible steering can be realized, the power-assisted stretcher can be lifted when flexible steering is not needed, the free arm 63 is stepped on, and the supporting frame 6 can be reset under the action of the elasticity of the torsion spring.

In the present embodiment, the universal ball 64 specifically includes a ball cylinder fixed to the lower end of the support frame 6, and a ball fitted to the lower end of the ball cylinder. Obviously, the universal ball 64 of the present embodiment may be replaced with a universal wheel.

In this embodiment, the support frame 6 is a triangular frame body, the support frame 6 is further fixed with a middle rotating arm 62, the middle rotating arm 62 is also rotatably sleeved on the spindle 46, and a free arm 63 extends on the middle rotating arm 62, so that the support frame 6 can be conveniently driven to rotate by stepping or pulling the free arm 63. The structural design of support frame 6 is reasonable, and when support frame 6 was in the horizontality, the universal ball 64 of support frame 6 three angle department all contacted with ground, cooperation middle part rocking arm 62 and support swing arm 61 can stably support whole crawler running mechanism 4.

In the present invention, terms such as "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "side", "bottom", etc. refer to an orientation or a positional relationship based on that shown in the drawings, and are merely relational terms, which are used for convenience in describing structural relationships of various components or elements of the present invention, and do not denote any one of the components or elements of the present invention, and are not to be construed as limiting the present invention.

Claims (8)

1. Helping hand stretcher, its characterized in that: the crawler belt lifting device comprises a stretcher (1), a pair of left-right X-shaped lifting arms (3) and a crawler belt travelling mechanism (4), wherein the crawler belt travelling mechanism (4) comprises crawler belt frames on two sides, crawler belt driving wheels (42) and crawler belt loading follower wheels (45), the crawler belt frames on two sides are fixedly connected through front and rear arranged main shafts (46), the end parts of the main shafts (46) are rotatably provided with the crawler belt driving wheels (42), a crawler belt (43) is sleeved between the two crawler belt driving wheels (42) on each side, a plurality of crawler belt loading follower wheels (45) which are kept in contact with the crawler belt (43) are rotatably arranged on the crawler belt frames, and bottom guide rail pieces (5) are fixedly arranged on the inner sides of the crawler belt frames;

the lower ends of the two sides of the stretcher (1) are fixedly provided with top guide rail pieces (2);

x type lifting arm (3) include a pair of alternately set up lifting arm (31), and detachable round pin axle spare (32) normal running fit is connected at lifting arm (31) middle part that alternately set up, and horizontal parallel lifting arm (31) upper end is through last stabilizer bar (34) fixed connection, and horizontal parallel lifting arm (31) lower extreme is through lower stabilizer bar (33) fixed connection, and the upper end of lifting arm (31) is through gyro wheel (35) and top guide rail spare (2) horizontal slip fit connection of rotation installation, and the tip of lower stabilizer bar (33) is through gyro wheel (35) and bottom guide rail spare (5) horizontal slip fit connection of rotation installation.

2. The booster stretcher of claim 1, wherein: the bottom guide rail piece (5) is provided with a bottom transverse guide rail groove matched with the roller (35), and the bottom transverse guide rail groove is provided with at least two bottom limit grooves (51);

the top guide rail piece (2) is provided with a top transverse guide rail groove matched with the roller, and the top transverse guide rail groove is provided with at least two top limit grooves (21).

3. The booster stretcher of claim 1, wherein: the number of the bottom guide rail pieces (5) is 4, and bottom limit grooves (51) are formed in the two ends of each bottom guide rail piece (5);

the number of the top guide rail pieces (2) is 4, top limit grooves (21) are formed in the two ends of each guide rail piece (2), a working groove (22) is formed in the middle of each top guide rail piece (2), and a clamping groove (23) is formed between the outer top limit groove (21) and the working groove (22);

the bottom limit groove (51) at the outer side of the guide rail piece (5) is correspondingly arranged right below the clamping groove (23) of the top guide rail piece (2).

4. The booster stretcher of claim 2, wherein: the roller limiting mechanism is arranged on each top limiting groove (21) of the top guide rail piece (2), and comprises a limiting clamping hook (26) which is arranged on the top guide rail piece (2) in a vertical sliding mode, a limiting spring (25) and a fixing pin (24) which is fixed on the top guide rail piece (2), one end of the limiting spring (25) is connected with the fixing pin (24), and the other end of the limiting spring (25) is abutted to the limiting clamping hook (26).

5. The booster stretcher of claim 1, wherein: the crawler frame comprises a frame seat plate (41) and an outer stabilizing frame (44), the end part of a main shaft (46) penetrates through the corresponding frame seat plate (41), a plurality of auxiliary shafts are fixedly mounted on the outer side of the frame seat plate (41), the crawler load follower wheel (45) is rotatably mounted on the corresponding auxiliary shaft, and the outer stabilizing frame (44) is fixedly connected with the end part of the main shaft (46) and the end part of the auxiliary shaft.

6. The booster stretcher of claim 1, wherein: the crawler belt tensioning mechanism (8) comprises a tensioning seat plate (82) fixed with the crawler belt frame, a tensioning rod (84) and a tensioning wheel (81) which is used for being in abutting connection with the crawler belt (43), the tensioning wheel (81) is rotatably arranged on a tensioning wheel shaft, and the end part limiting sleeve of the tensioning wheel shaft is provided with the tensioning rod (84);

vertical tensioning guide slot (85) has been seted up to tensioning bedplate (82) upper end, and tensioning shaft sliding fit is in vertical tensioning guide slot (85), still fixedly connected with locking bedplate (83) on tensioning bedplate (82) lateral wall, the free end activity of tensioning pole (84) passes locking bedplate (83), and the free end of tensioning pole (84) is screwed the cooperation through screw thread section and two locking nut (86), and two locking nut (86) laminating are at locking bedplate (83) upper and lower lateral wall respectively.

7. The booster stretcher of claim 1, wherein: the support frame (6) that still set up around including, fixed mounting has a pair of support swing arm (61) on support frame (6), and the one end rotation suit that support swing arm (61) kept away from support frame (6) is on main shaft (46), and still the cover is equipped with the torsional spring on main shaft (46), and the one end and the main shaft (46) of torsional spring are fixed, and the other end and the support swing arm (61) of torsional spring are fixed, a plurality of universal balls (64) are still distributed and installed to the bottom of support frame (6).

8. The booster stretcher of claim 1, wherein: the novel stabilizer is characterized by further comprising a positioning rod (7), one end of the positioning rod (7) is rotatably sleeved on the main shaft (46), and the other end of the positioning rod (7) is provided with an arc clamping sleeve (71) which is used for being clamped on the lower stabilizer bar (33).