CN115979676B - Loader operation resistance test trolley - Google Patents
Loader operation resistance test trolley Download PDFInfo
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- CN115979676B CN115979676B CN202310264863.9A CN202310264863A CN115979676B CN 115979676 B CN115979676 B CN 115979676B CN 202310264863 A CN202310264863 A CN 202310264863A CN 115979676 B CN115979676 B CN 115979676B
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Abstract
The invention discloses a loader operation resistance test trolley, which relates to the technical field of loader operation resistance tests and comprises a saddle and a loader, wherein a chute is formed in the top wall of the saddle, a first motor is fixedly connected to the inner wall of the chute, a ball screw is fixedly connected to the output end of the first motor, a ball nut is connected to the side wall of the ball screw in a threaded manner, a connecting block is fixedly connected to the top wall of the ball nut, the connecting block is slidably connected to the top of the saddle, a bearing table is fixedly connected to the top wall of the connecting block, a chute is formed in the side wall of the bearing table, a tension sensor is fixedly connected to the inner wall of the chute, a sliding block is slidably connected to the inner wall of the chute, a tension bar is fixedly connected to the side wall of the sliding block, and one end of the tension bar, which is far away from the sliding block, is fixedly connected with the tension sensor. According to the invention, through the structures of the tension sensor, the display screen, the shooting device and the like, the bucket part of the loader can carry out shoveling operation at different accelerations, and the resistance of the bucket part is judged by the tension sensor during the action.
Description
Technical Field
The invention relates to the technical field of loader operation resistance testing, in particular to a loader operation resistance testing trolley.
Background
The loader is a kind of earth and stone construction machine widely used in highway, railway, building, hydropower, harbor, mine and other construction engineering, and is mainly used for shoveling soil, sand, lime, coal and other bulk materials, and also can be used for slightly shoveling ores, hard soil and other materials. The replacement of different auxiliary working devices can also carry out bulldozing, lifting and loading and unloading operations of other materials such as wood. The shoveling and material handling operations of the loader are performed by the movement of its working device. The loader working device consists of a bucket, a movable arm, a connecting rod, a rocker arm, a rotating bucket oil cylinder, a movable arm oil cylinder and the like. The whole working device is hinged on the frame. The bucket is hinged with the rotating bucket oil cylinder through a connecting rod and a rocker arm and is used for loading and unloading materials. The movable arm is hinged with the frame and the movable arm cylinder and is used for lifting the bucket. The turning of the bucket and the lifting of the movable arm are hydraulically operated.
At present, a working mode of the loader is that a tester starts the loader, drives the loader to drive the bucket to insert into a material pile through traction force generated by tires and the ground, and then the bucket scoops up the material pile, but the loader can fill the bucket with materials under what acceleration is required to be tested, and the resistance to the scooping up of the materials in the bucket is uncertain. For this purpose, we propose a loader operation resistance test trolley.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a loader operation resistance test trolley.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a loader operation resistance test trolley, includes saddle and loader, the spout has been seted up to the saddle roof, spout inner wall fixedly connected with first motor, the output fixedly connected with ball of first motor, ball lateral wall threaded connection has ball nut, ball nut roof fixedly connected with connecting block, connecting block sliding connection is at the saddle top, connecting block roof fixedly connected with plummer, the plummer lateral wall has seted up the empty slot, empty slot inner wall fixedly connected with tension sensor, empty slot inner wall sliding connection has the slider, slider lateral wall fixedly connected with tension strip, one end and the tension sensor fixedly connected of slider that the slider kept away from the slider, one side fixedly connected with stay cord of slider kept away from the tension strip, one end and the scraper bowl part fixedly connected of loader of slider are kept away from to the stay cord, plummer lateral wall fixedly connected with display screen, tension sensor and display screen electric connection, spout inner wall fixedly connected with buffer spring;
the upper part of the bearing table is provided with a clamping mechanism for fixing the loader.
Further, the fixture includes the symmetry and sets up the recess at plummer roof, two the recess inner wall runs through jointly and rotates and be connected with two bi-directional lead screw, one of them recess inner wall fixedly connected with second motor, the output and one of them bi-directional lead screw fixed connection of second motor.
Further, fixture still includes symmetrical threaded connection at the clamp splice of every two-way lead screw lateral wall, every the equal fixedly connected with first limiting plate of clamp splice roof, the lateral wall fixedly connected with second limiting plate of first limiting plate.
Further, the inner wall of the clamping block is provided with a threaded through hole, the bidirectional screw rod is in threaded connection with the corresponding threaded through hole, one of the bidirectional screw rod side walls is fixedly connected with a driving gear, the other bidirectional screw rod side wall is fixedly connected with a driven gear, and the driving gear is connected with the driven gear through a chain.
Further, the connecting block lateral wall fixedly connected with acceleration sensor, acceleration sensor and display screen electric connection.
Further, saddle roof fixedly connected with places the platform, place a platform roof fixedly connected with interception strip, place a platform upper portion and pile up there is the grit, place a platform top fixedly connected with guard plate, the guard plate is font structure.
Further, the shooting device is fixedly connected to the side wall of the top of the protection plate, and the shooting device is electrically connected with the display screen.
Further, a plurality of leading wheels of saddle diapire symmetry fixedly connected with, perpendicular groove has been seted up to saddle lateral wall, perpendicular inslot portion sliding connection has the stopper.
Further, the jack has been seted up to the stopper inner wall, the screw hole has been seted up to the saddle lateral wall, screw hole inside threaded connection has the bolt, the one end of bolt is inserted and is established inside the jack.
Further, the stopper lateral wall fixedly connected with holds the piece, it is right trapezoid structure to hold the piece, the pulley is installed to the empty slot inner wall, the stay cord passes behind the pulley with the scraper bowl part fixed connection of loader.
Further, the guiding groove has all been seted up to the front and back both sides of guard plate, the guiding groove comprises tilting part and horizontal part, and tilting part's guiding groove's route sets up along the outline of grit slope, guiding groove inside slip is equipped with the guiding rod, the outside of guard plate around the guiding rod all extends to, extends to fixedly connected with connecting rod on the outside guiding rod of guard plate, the change groove has been seted up to the one end that the guiding rod was kept away from to the connecting rod, the inside rotation of change groove is connected with the bull stick, the other end of bull stick is equipped with the cylinder, the telescopic link and the bull stick fixed connection of cylinder, the one end fixedly connected with fixing base that the bull stick was kept away from to the cylinder, fixing base fixed connection is on the saddle.
Further, be located the front and back rotate on the inside guide arm of guard plate and be connected with the board that gathers materials, the board downwardly extending's that gathers materials part is convex, and the bottom of board that gathers materials is equipped with semi-circular groove of dodging, guide arm still fixedly connected with backup pad, and the backup pad has been seted up and has been held the board pivoted square groove that gathers materials, the one end fixedly connected with supporting spring that gathers materials board and backup pad are close to each other.
The invention has the following advantages:
1. the trolley device is convenient to move by arranging the structures such as the guide wheel, the bearing block, the limiting block and the like, is suitable for different scenes, the bearing block can be adjusted along the vertical direction, the movement of the saddle is convenient, and the loader can be enabled to move to the upper part of the bearing table through the bearing block to carry out operation resistance test;
2. through the arrangement of the structures such as the plurality of bidirectional lead screws, the clamping blocks and the plurality of limiting plates, the first limiting plate and the second limiting plate which are fixedly connected with the top of each clamping block can offset and limit the tyre of the loader, so that the clamping and fixing of the tyre part of the loader are completed, and the movement of the loader during the operation resistance test is avoided, and the test effect is influenced;
3. through the structures such as the tension sensor, the display screen and the shooting device, the bucket part of the loader can carry out shoveling operation at different accelerations, the sliding block is driven to slide in the sliding groove by the pull rope, then the sliding block pulls the tension sensor through the tension strip, the tension value received by the tension sensor is displayed on the display screen, the tension provided by the bucket during working is obtained, and the resistance during working is judged;
4. through setting up structures such as guide arm, guide slot, material collecting plate, after the scraper bowl part of loader inserts in the grit and accomplishes a test, the grit of unloading and the grit that suffers the impact that causes when the scraper bowl inserts the grit can scatter to the right side of grit heap, can pile up the grit to original grit heap shape through structures such as guide arm, guide slot, material collecting plate when need test once more, guarantees the accuracy of test.
Drawings
FIG. 1 is a schematic diagram of a loader operating resistance test trolley according to the present invention;
FIG. 2 is an enlarged schematic view of the portion A of FIG. 1;
FIG. 3 is an enlarged schematic view of the portion B of FIG. 1;
FIG. 4 is a schematic view of a threaded hole in a loader operating resistance test trolley according to the present invention;
FIG. 5 is a schematic view of a structure of a stacker;
FIG. 6 is a schematic diagram of a rotor;
in the figure: 1 saddle, 2 spouts, 3 ball screw, 4 ball nut, 5 connecting block, 6 acceleration sensor, 7 plummer, 8 recess, 9 bi-directional screw, 10 clamp splice, 11 screw perforation, 12 first limiting plate, 13 second limiting plate, 14 driven gear, 15 driving gear, 16 chain, 19 empty slot, 20 slider, 21 pulling strip, 22 force sensor, 23 stay cord, 24 placement table, 25 guard plate, 26 grit, 27 first motor, 28 bearing block, 29 display screen, 30 leading wheel, 31 second motor, 32 shooting device, 33 vertical slot, 34 stopper, 35 jack, 36 bolt, 37 pulley, 38 buffer spring, 39 interception strip, 40 leading slot, 41 connecting rod, 42 collecting plate, 43 supporting spring, 44 supporting plate, 45 fixing seat, 46 cylinder, 47 dodging slot, 48 leading rod, 49 rotating slot, 50 bull stick.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit or scope of the invention, which is therefore not limited to the specific embodiments disclosed below.
Referring to fig. 1-6, a loader operation resistance test trolley comprises a saddle 1 and a loader, wherein a chute 2 is formed in the top wall of the saddle 1, a first motor 27 is fixedly connected to the inner wall of the chute 2, a ball screw 3 is fixedly connected to the output end of the first motor 27, a ball nut 4 is connected to the side wall of the ball screw 3 in a threaded manner, a connecting block 5 is fixedly connected to the top wall of the ball nut 4, the connecting block 5 is slidingly connected to the top of the saddle 1, a bearing table 7 is fixedly connected to the top wall of the connecting block 5, a hollow groove 19 is formed in the side wall of the bearing table 7, a tension sensor 22 is fixedly connected to the inner wall of the hollow groove 19, a sliding block 20 is slidingly connected to the inner wall of the hollow groove 19, a tension bar 21 is fixedly connected to the side wall of the sliding block 20, the tension bar 21 is a hard rod body, one end of the tension bar 21 away from the sliding block 20 is fixedly connected with a pull rope 23, one end of the pull rope 23 away from the sliding block 20 is fixedly connected to a bucket part of the loader, a display screen 29 is fixedly connected to the side wall of the bearing table 7, and the tension sensor 22 is electrically connected to the display screen 29; the tension sensor 22 is conventional and can be used in conjunction with tension testing the movement of the bucket section.
The upper part of the bearing table 7 is provided with a clamping mechanism for fixing the loader.
The fixture includes that the symmetry is offered at the recess 8 of plummer 7 roof, and two recess 8 inner walls run through jointly and rotate and be connected with two bi-directional lead screw 9, and one of them recess 8 inner wall fixedly connected with second motor 31, the output of second motor 31 and one of them bi-directional lead screw 9 fixed connection, the orbit dislocation set that advances of recess 8 and loader place 24 roof fixedly connected with interception strip 39, spout 2 inner wall fixedly connected with buffer spring 38, and pulley 37 is installed to the empty groove 19 inner wall, and stay cord 23 pass behind pulley 37 with the scraper bowl part fixed connection of loader.
The clamping mechanism further comprises clamping blocks 10 which are symmetrically and threadedly connected to the side walls of each bidirectional screw rod 9, the top wall of each clamping block 10 is fixedly connected with a first limiting plate 12, the side walls of the first limiting plates 12 are fixedly connected with second limiting plates 13, and the first limiting plates 12 and the second limiting plates 13 can be in abutting contact with wheel parts of the loader.
The inner wall of the clamping block 10 is provided with a threaded through hole 11, the bidirectional screw rod 9 is in threaded connection with the corresponding threaded through hole 11, the side wall of one bidirectional screw rod 9 is fixedly connected with a driving gear 15, the side wall of the other bidirectional screw rod 9 is fixedly connected with a driven gear 14, and the driving gear 15 and the driven gear 14 are connected through a chain 16.
The lateral wall fixedly connected with acceleration sensor 6 of connecting block 5, acceleration sensor 6 and display screen 29 electric connection, acceleration sensor 6 be prior art, can show on the acceleration data transfer display screen 29, make things convenient for the tester to observe the record.
The saddle 1 roof fixedly connected with places the platform 24, places the platform 24 upper portion and piles up there is grit 26, places platform 24 top fixedly connected with guard plate 25, and guard plate 25 is font structure.
The shooting device 32 is fixedly connected to the side wall of the top of the protection plate 25, the shooting device 32 is electrically connected with the display screen 29, the shooting device 32 is also in the prior art, shot contents can be displayed in the display screen 29, details are omitted here, sand and stones scooped up in the bucket are shot by the shooting device 32 after the bucket of the loader is operated, so that the full load rate in the bucket is judged, the shooting device 32 displays shot results on the upper portion of the display screen 29, and a tester can observe and record conveniently.
The saddle 1 diapire symmetry fixedly connected with a plurality of leading wheels 30, and leading wheel 30 have the self-locking function, and perpendicular groove 33 has been seted up to saddle 1 lateral wall, and perpendicular groove 33 inside sliding connection has stopper 34.
The jack 35 has been seted up to stopper 34 inner wall, the screw hole has been seted up to saddle 1 lateral wall, screw hole inside threaded connection has bolt 36, the one end of bolt 36 inserts and establishes in the jack 35 inside, when the loader operation resistance test needs to carry out, the user rotates bolt 36 at first, make bolt 36 break away from the inside jack 35 of stopper 34, then the supporting piece 28 will drive stopper 34 downward movement, make the bottom of supporting piece 28 and ground counterbalance contact, can start the loader that needs the test this moment, move this loader to supporting bench 7 upper portion through supporting piece 28.
The side wall of the limiting block 34 is fixedly connected with a bearing block 28, and the bearing block 28 is of a right trapezoid structure, so that the loader can conveniently move to the upper part of the bearing table 7.
In the invention, the saddle 1 can move through the guide wheels 30, so that the trolley device can be conveniently moved, the trolley device is suitable for different scenes, and the guide wheels 30 have self-locking functions.
The front side and the rear side of the protection plate 25 are both provided with guide grooves 40, the guide grooves 40 are composed of inclined parts and horizontal parts, the guide grooves 40 of the inclined parts are arranged along the inclined outline of the sand 26, guide rods 48 are slidably arranged in the guide grooves 40, the front end and the rear end of each guide rod 48 extend to the outside of the front protection plate 25 and the rear protection plate 25, connecting rods 41 are fixedly connected to the guide rods 48 extending to the outside of the protection plates 25, rotating grooves 49 are formed in one ends of the connecting rods 41, far from the guide rods 48, of the rotating grooves 49, rotating rods 50 are rotatably connected to the inside of the rotating grooves 49, air cylinders 46 are arranged at the other ends of the rotating rods 50, telescopic rods of the air cylinders 46 are fixedly connected with the rotating rods 50, one ends of the air cylinders 46, far from the rotating rods 50, of the air cylinders are fixedly connected with fixing seats 45, the fixing seats 45 are fixedly connected to the saddle 1,
when the bucket of the loader is partially inserted into the sand 26 to complete a test, the removed sand 26 and the sand 26 subjected to the impact caused by the insertion of the bucket into the sand 26 scatter to the right side of the sand pile, the sand 26 needs to be re-piled together to ensure the accuracy of the test when the test is required again, at this time, the cylinder 46 can be started, the telescopic rod of the cylinder 46 drives the rotating rod 50 to move leftwards, the rotating rod 50 drives the connecting rod 41 and the guide rod 48 to move leftwards in the guide groove 40, and the connecting rod 50 moves to the top of the sand pile along the path of the guide groove 40, and drives the collecting plate 42 to re-pile the scattered sand 26 to the sand pile in the process.
The guide rods 48 inside the front protection plate 25 and the rear protection plate 25 are rotatably connected with the collecting plate 42, the downward extending part of the collecting plate 42 is arc-shaped, the bottoms of the collecting plate 42 are provided with semicircular avoiding grooves 47, the guide rods 48 are fixedly connected with the support plates 44, the support plates 44 are provided with square grooves for accommodating the rotation of the collecting plate 42, and one ends, close to the collecting plate 42 and the support plates 44, of the collecting plate are fixedly connected with the support springs 43.
Because the collecting plate 42 and the guide rod 48 are rotationally connected, the collecting plate 42 can move along the original outline of the sand pile when moving, the outline of the sand pile which is secondarily piled up is guaranteed to be consistent with that of the original sand pile to the greatest extent, the collecting plate 42 can be tightly attached to the outline of the sand pile under the action of the supporting spring 43, the piling effect of sand 26 is improved, the avoidance groove 47 is semicircular and is also used for better attaching the sand pile similar to a cone, and the piling effect of the sand 26 is further improved.
When the operation resistance test of the loader is required, a user rotates the bolt 36 firstly, so that the bolt 36 is separated from the jack 35 in the limiting block 34, then the bearing block 28 drives the limiting block 34 to move downwards, the bottom of the bearing block 28 is in contact with the ground, the loader to be tested can be started at the moment, the loader is moved to the upper part of the bearing table 7 through the bearing block 28, then the second motor 31 is started, the output end of the second motor 31 drives one of the two-way screw rods 9 to rotate, the two-way screw rods 9 also drive the other two-way screw rod 9 to synchronously rotate through the driving gear 15, the driven gear 14 and the chain 16, and then the clamping blocks 10 symmetrically and threadedly connected with the side walls of each two-way screw rod 9 move in opposite directions along the axial direction of the two-way screw rod 9, so that the first limiting plate 12 and the second limiting plate 13 fixedly connected with the top of each clamping block 10 can limit the tyre of the loader, and further the tyre part of the loader can be clamped and fixed, and the loader can be prevented from moving when the operation resistance test is performed, and the test effect is prevented.
Then the first motor 27 is started, the first motor 27 drives the ball screw 3 to rotate, then the ball nut 4 in threaded connection with the side wall of the ball screw 3 moves rightwards along the horizontal direction, the ball nut 4 drives the connecting block 5 to synchronously move, the connecting block 5 drives the loading platform 7 and the loader on the upper part of the loading platform 7 to synchronously move, the loader obtains an acceleration, and the acceleration sensor 6 fixedly connected with the side wall of the connecting block 5 can display the acceleration obtained by the loader on the display screen 29.
When the carrying platform 7 moves to the rightmost end of the stroke, the loader is started at this moment, the bucket part of the loader is inserted into the sand 26, then the shoveling operation is carried out, at this moment, because the pull rope 23 is fixedly connected with the bucket part, the sliding block 20 is driven to slide in the empty groove 19 by the pull rope 23 when the bucket works, the sliding block 20 pulls the tension sensor 22 by the tension strip 21, the tension value received by the tension sensor 22 is displayed on the display screen 29, the tension provided by the bucket when the bucket works is obtained, and the resistance when the bucket works is judged.
The rotation speed of the first motor 27 is controlled, so that the loader obtains different accelerations, different resistance data can be obtained, and the judgment result of the comparison data is increased.
After the bucket part of the loader finishes the operation, the shooting device 32 shoots the sand and gravel scooped up in the bucket, so that the full load rate in the bucket is judged, and the shooting device 32 displays the shooting result on the upper part of the display screen 29, so that a tester can observe and record conveniently.
The present invention is not limited to the above-mentioned embodiments, and any person skilled in the art, based on the technical solution of the present invention and the inventive concept thereof, can be replaced or changed within the scope of the present invention.
Claims (3)
1. The utility model provides a loader operation resistance test trolley, includes saddle (1) and loader, its characterized in that, spout (2) have been seted up to saddle (1) roof, first motor (27) of spout (2) inner wall fixedly connected with, the output fixedly connected with ball screw (3) of first motor (27), ball screw (3) lateral wall threaded connection has ball nut (4), ball nut (4) roof fixedly connected with connecting block (5), connecting block (5) sliding connection is at saddle (1) top, connecting block (5) roof fixedly connected with plummer (7), plummer (7) lateral wall has seted up empty slot (19), empty slot (19) inner wall fixedly connected with tension sensor (22), empty slot (19) inner wall sliding connection has slider (20), slider (20) lateral wall fixedly connected with tension strip (21), one end and tension sensor (22) fixedly connected with of slider (20) are kept away from slider (21), one side fixedly connected with (23) of slider (20) kept away from strip (21), guy rope (23) and loading shovel part (29) are kept away from fixed connection, guy rope (29) are connected with fixed side wall of the loading shovel, the tension sensor (22) is electrically connected with the display screen (29), and a buffer spring (38) is fixedly connected with the inner wall of the chute (2); the upper part of the bearing table (7) is provided with a clamping mechanism for fixing the loader; the clamping mechanism comprises grooves (8) symmetrically formed in the top wall of the bearing table (7), two bidirectional lead screws (9) are connected with the inner walls of the two grooves (8) in a penetrating and rotating mode, a second motor (31) is fixedly connected to the inner wall of one groove (8), and the output end of the second motor (31) is fixedly connected with one bidirectional lead screw (9); the clamping mechanism further comprises clamping blocks (10) symmetrically connected to the side wall of each bidirectional screw rod (9) in a threaded mode, a first limiting plate (12) is fixedly connected to the top wall of each clamping block (10), and a second limiting plate (13) is fixedly connected to the side wall of each first limiting plate (12); the vehicle seat is characterized in that a placing table (24) is fixedly connected to the top wall of the vehicle seat (1), an interception strip (39) is fixedly connected to the top wall of the placing table (24), sand and stones (26) are piled on the upper portion of the placing table (24), a protection plate (25) is fixedly connected to the top of the placing table (24), and the protection plate (25) is of a -shaped structure; the side wall of the top of the protection plate (25) is fixedly connected with a shooting device (32), and the shooting device (32) is electrically connected with a display screen (29); a plurality of guide wheels (30) are symmetrically and fixedly connected to the bottom wall of the saddle (1), vertical grooves (33) are formed in the side wall of the saddle (1), and limiting blocks (34) are slidably connected inside the vertical grooves (33); the inner wall of the limiting block (34) is provided with a jack (35), the side wall of the saddle (1) is provided with a threaded hole, the threaded hole is internally connected with a bolt (36) in a threaded manner, and one end of the bolt (36) is inserted into the jack (35); the side wall of the limiting block (34) is fixedly connected with a bearing block (28), the bearing block (28) is of a right trapezoid structure, a pulley (37) is arranged on the inner wall of the empty groove (19), and the pull rope (23) passes through the pulley (37) and is fixedly connected with a bucket part of the loader; the front side and the rear side of the protection plate (25) are respectively provided with a guide groove (40), each guide groove (40) consists of an inclined part and a horizontal part, the path of each guide groove (40) of each inclined part is arranged along the inclined outline of a sand stone (26), guide rods (48) are slidably arranged in each guide groove (40), the front ends and the rear ends of the guide rods (48) extend to the outer parts of the front protection plate (25) and the rear protection plate (25), connecting rods (41) are fixedly connected to the guide rods (48) extending to the outer parts of the protection plate (25), a rotary groove (49) is formed in one end, far away from the guide rods (48), of each connecting rod (41), a rotary rod (50) is rotatably connected to the inner part of each rotary groove (49), an air cylinder (46) is arranged at the other end of each rotary rod (50), a telescopic rod of each air cylinder (46) is fixedly connected with each rotary rod (50), one end, far away from each rotary rod (50), of each air cylinder (46) is fixedly connected with a fixing seat (45), and each fixing seat (45) is fixedly connected to a vehicle seat (1). Be located the front and back rotationally be connected with on guide bar (48) of guard plate (25) inside and gather materials board (42), the part that gathers materials board (42) downwardly extending is convex, and the bottom of gathering materials board (42) is equipped with semi-circular dodging groove (47), guide bar (48) still fixedly connected with backup pad (44), and backup pad (44) set up and hold the square groove of gathering materials board (42) pivoted, the one end fixedly connected with supporting spring (43) that gathers materials board (42) and backup pad (44) are close to each other.
2. The loader operation resistance test trolley according to claim 1, wherein threaded holes (11) are formed in the inner wall of the clamping block (10), the bidirectional screw rod (9) is in threaded connection with the corresponding threaded hole (11), one side wall of the bidirectional screw rod (9) is fixedly connected with a driving gear (15), the other side wall of the bidirectional screw rod (9) is fixedly connected with a driven gear (14), and the driving gear (15) and the driven gear (14) are connected through a chain (16).
3. The loader operation resistance test trolley according to claim 1, wherein an acceleration sensor (6) is fixedly connected to the side wall of the connecting block (5), and the acceleration sensor (6) is electrically connected with a display screen (29).
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