CN210236963U - Tractor with labor-saving and safety use - Google Patents

Abstract

The utility model belongs to the technical field of machinery pulls, lifting means. The application reliability, the component structure is reduced and reduced, so the volume is small, the weight is light, and the operation is convenient by directly holding. A tractor which is labor-saving and safe to use comprises a shell, a traction assembly, a front swing steel wire and a rear swing steel wire, wherein the traction assembly comprises a front swing lifting hook, an upward opening handle, a descending handle, a front swing linkage frame, a rear swing linkage frame and a front-rear swing connection locking piece group; the head end of the upper opening handle is provided with a hinged connecting rod connected with the head end of the linkage piece, the fixed linkage part of the linkage piece is downwards provided with a lower hinged shaft connected to the front rocking linkage frame, and the bottom of the front rocking linkage frame is hinged with a descending handle; the rear swing linkage frame is clamped between the front hinge heads of the front linkage sheet and the rear linkage sheet through a hinge shaft.

Description

Tractor with labor-saving and safety use

Technical Field

The utility model belongs to the technical field of machinery pulls, lifting means.

Background

The existing manual steel wire tractor basically adopts a gear set or a pulley mode, for example, the gear type is complex in size and large in volume, the pulley type is used for a long time, the surface is worn smoothly and is easy to slide, and the safety is very problematic.

Disclosure of Invention

Based on the technical problems existing in the background technology, the tractor which is labor-saving and safe to use is provided, the defects are overcome, the safety performance during use is improved, the application reliability is improved, the assembly structure is reduced and reduced, the size is small, the weight is light, and the tractor can be directly held by hands and is convenient to operate.

The utility model provides a tractor of using laborsaving safety realizes through following embodiment:

a tractor which is labor-saving and safe to use comprises a shell, a traction assembly, a front swing steel wire and a rear swing steel wire, wherein the traction assembly comprises a front swing lifting hook, an upward opening handle, a descending handle, a front swing linkage frame, a rear swing linkage frame and a front and rear swing connection locking piece group, the upward opening handle is hinged to the rear position of the front swing lifting hook, the front and rear swing connection locking piece group comprises a front linkage piece and a rear linkage piece, a front swing frame pushing piece is clamped between the front linkage piece and the rear linkage piece and is connected with the front swing frame pushing piece through a hinge shaft, the front linkage piece and the rear linkage piece are consistent in structure, and the front hinge head at the left end, the middle fixed linkage part and the hook hinge head at the right end are integrally;

the tail end of the front swing hook is hinged with a hinge shaft connecting rod, the hinge shaft connecting rod extends backwards and is hinged to an upper opening handle, and the upper opening handle is hinged to the front and the rear through a hinge shaft and front hinge heads of the upper opening handle and the lower handle respectively;

the head end of the upper opening handle is provided with a hinged connecting rod connected with the head end of the linkage piece, the fixed linkage part of the linkage piece is downwards provided with a lower hinged shaft connected to the front rocking linkage frame, and the bottom of the front rocking linkage frame is hinged with the descending handle;

the rear swing linkage frame is clamped between the front hinge heads of the front linkage sheet and the rear linkage sheet through a hinge shaft, and the bottom of the rear swing linkage frame is obliquely arranged forwards and is connected with a descending handle through a descending handle connecting rod hinge shaft;

the front rocking linkage frame and the rear rocking linkage frame at least comprise a front rocking plate and a rear rocking plate which are symmetrically arranged in a group, two rocking direction clamping blocks which are clamped up and down are connected between the front rocking plate and the rear rocking plate through a transverse hinge shaft, and the front rocking plate and the rear rocking plate are connected to form a groined-shaped structure;

the front swing steel wire is sleeved on the front swing lifting hook, and the rear swing steel wire is led into the swing direction clamping block of the front swing linkage frame, led into the swing direction clamping block of the rear swing linkage frame in a penetrating mode and led out.

Preferably, the tail end of the linkage piece is provided with a linkage piece stopper. The linkage piece blocking head is used for pushing the square connecting rod of the front rocking linkage frame to tilt the front rocking linkage frame upwards.

Preferably, the bottom of the front swing linkage frame is further hinged with a descending head blocking strip in an く character shape, the left side of the descending head blocking strip is hinged to the bottom of a front swing plate of the front swing linkage frame, and the left side of the descending head blocking strip abuts against the left side of the descending handle. The structure can lead the bottom part to be automatically pushed forwards by forming the counterforce at the rear through the linkage spring part when the upward-opening handle is loosened, so that the positions of the forward-rocking linkage frame and the descending handle are restored, the manual restoration by a user is not needed, the user can omit the restoration action, and the labor-saving effect is achieved.

Preferably, an automatic pressure spring reset rod is transversely connected and arranged between the upward opening handle and the downward opening handle and comprises a U-shaped connecting rod, spring cores and a safety pinching head, the tail ends of the U-shaped connecting rod are inserted into the two spring cores which are arranged in parallel in tandem, the tail ends of the spring cores are hinged or hooked on the upward opening handle, the pressure springs are sleeved on the whole bodies of the spring cores, and the safety pinching head is hinged and clamped in the middle of the head ends of the U-shaped connecting rod.

Preferably, the front swing lifting hook comprises a front hook and a rear clamping arc hook, a blocking piece is arranged at the bottom of a tail arc piece of the rear clamping arc hook, the bottom of the front hook is bent to form a butting piece, the butting piece is provided with a hinged clamping shaft, a blocking groove is formed in a U-shaped connecting rod in a structure matched with the hinged clamping shaft, the hinged clamping shaft is clamped into the blocking groove, the butting piece and the blocking piece form a clamping structure, and a clamping head is clamped in a clamping safety mode.

Preferably, the hook hinge heads of the front linkage piece and the rear linkage piece are also provided with linkage hinge grooves in a hollow manner, and a く character-shaped linkage trigger piece is arranged between the linkage hinge grooves. The linkage piece combined with the linkage trigger piece can basically achieve 100% of synchronization rate when moving, so that the transmission capacity is high, and the failure rate is low.

Compared with the prior art, the utility model discloses the beneficial effect who has is: the shaking assembly can automatically break (the buckling sleeve structure can break and jump out) when being overweight, the self structural damage ensures that the upward opening handle pulls and the forward and backward shaking connection lock piece group does not lift, thereby achieving the condition that the steel wire hauling cable does not move any more and ensuring the safety. If the heavy object is unloaded, the tightness can be quickly adjusted, the reaction is quick, the reaction time is short, the maximum lifting weight can exceed 50-100 times of the maximum lifting weight, the maximum flat pull force can reach 800 kilograms by the communication of 5GK per se, the strength of a user is greatly saved, the number of components is small, and only the front rocking linkage frame, the rear rocking linkage frame and main transmission parts of the front rocking linkage frame and the rear rocking linkage frame are provided, so that the elevator is strong in integration, small in size, light, portable, strong in portability and strong in adaptability, and can be particularly suitable for application in narrow spaces, such as flat constant-load rescue of an elevator.

Drawings

Fig. 1 is an overall front view.

Fig. 2 is a front view of the inner structure.

Fig. 3 is an exploded perspective view of the main structure.

Fig. 4 is an exploded assembly view of the inner body structure.

Fig. 5 is a structural view of the front link plate or the rear link plate.

Fig. 6 is a front drive structure view.

Fig. 7 is a rear view of the rear drive arrangement.

Fig. 8 is an exploded assembly of the transmission structure.

Fig. 9 is a front side view of the rotary structure with the front linkage piece removed.

Fig. 10 is a diagram of an automatic compression spring reset rod and a linkage mechanism thereof.

FIG. 11 is a front swing hook block diagram.

In the figure: the device comprises a shell (1), a traction assembly (2), a front swing steel wire (3), a rear swing steel wire (4), a front swing lifting hook (5), an upper opening handle (6), a descending handle (7), a front swing linkage frame (8), a rear swing linkage frame (9), a front and rear swing connecting lock cylinder group (10), a front linkage sheet (11), a rear linkage sheet (12), a front swing frame push sheet (13), a front hinge head (14), a fixed linkage part (15), a hook hinge head (16), a hinge shaft connecting rod (17), a descending handle connecting rod (18), a front swing plate (19), a rear swing plate (20), a swing clamping block (21), a linkage sheet blocking head (22), a descending head blocking strip (23), an automatic pressure spring reset rod (24), a U-shaped connecting rod (25), a spring core (26), a safety kneading head (27), a pressure spring (28), a front hook (29), a rear clamping arc (30), a blocking card (31), a blocking card (32), The hinge clamp shaft (33), the stop groove (34) are linked with the hinge groove (35) and the linkage trigger piece (36).

Detailed Description

The technical scheme of the utility model is described as the preferred concrete through the embodiment and with the attached drawings:

the orientation mentioned in the following embodiments specifically refers to the orientation shown in the drawings of the specification, and the connection structure is, unless otherwise specified, only integrally formed, clamped, connected, hinged, etc. in the prior art, except for the housing, the internal main structure of the present invention is directly made of plate-like or sheet-like metal by pressing or cutting, and the shape described herein mainly refers to the shape and structure content shown in the drawings of the specification, and the skilled person will understand the connection mode of the structure;

the invention creates the proposed structure, which is realized by the following implementation modes: the tractor which is labor-saving and safe to use and shown in the figure 1 comprises a shell (1) made of plastics, a traction assembly (2) used for gradually pulling and dragging, a front swing steel wire (3) with the front end connected with an object, and a rear swing steel wire (4) with the rear end connected with the object or traction machinery, wherein the traction assembly (2) comprises a front swing lifting hook (5), an upper opening handle (6), a descending handle (7), a front swing linkage frame (8), a rear swing linkage frame (9) and a front and rear swing connecting lock piece group (10), the upper opening handle (6) corresponds to the front swing linkage frame (8), the descending handle (7) corresponds to the rear swing linkage frame for combination, and the front and rear swing connecting lock piece group (10) is connected when the front and rear swing linkage frames are connected;

as shown in fig. 4, the connection method is as follows: the front-back swing connecting lock piece group (10) comprises a front linkage piece (11), a rear linkage piece (12) and a front cradle push piece (13) which is clamped between the front linkage piece and the rear linkage piece and is connected with the front cradle push piece through a hinge shaft, the front linkage piece (11) and the rear linkage piece (12) are consistent in structure, and the front linkage piece and the rear linkage piece are integrally molded and comprise a front hinge head (14) at the left end, a fixed linkage part (15) in the middle and a hook hinge head (16) at the right end, so that the structure is a common linkage structure in the field of door locks and can be like a plectrum linkage structure of the locks; the structure reaction is very sensitive, namely basically the structure which is known to pull the whole body is that one hand holds the upper opening handle (6) and the other hand holds the lower handle (7), and the two handles are simultaneously extruded towards the middle, so that the linkage groups at the two sides start to operate, and the operation steps are further explained below;

as shown in fig. 6, the tail end of the front swing hook (5) is hinged with a hinge connecting rod (17), the hinge connecting rod (17) extends backwards and is hinged to the upper opening handle (6), and the upper opening handle (6) is hinged with the front hinge head (14) of the upper opening handle (6) and the lower handle (7) through a hinge shaft in the front and at the back respectively; the two hinge shaft connecting rod structural parts are used for drawing the pull handle, the front swing lifting hook (5) and the front swing steel wire, linking the force to the front linkage piece (11) and the rear linkage piece (12) and then transmitting the force to each structural component which swings backwards, so that the force transmission piece basically has no abrasion and error condition as the gear component in the prior art like the transmission structure of the old train;

as shown in fig. 4 and 5, the head end of the upward-opening handle (6) is provided with a hinged connecting rod connected with the head end of the linkage sheet (12), the fixed linkage part (15) of the linkage sheet (12) is downwards provided with a lower hinged shaft connected to the front-rocking linkage frame (8), and the bottom of the front-rocking linkage frame (8) is hinged with the descending handle (7);

the rear swing linkage frame (9) is clamped between a front hinge head (14) of the front linkage sheet (11) and a front hinge head (14) of the rear linkage sheet (12) through a hinge shaft, and the bottom of the rear swing linkage frame (9) is obliquely and forwardly provided with a descending handle connecting rod (18) which is connected to the descending handle (7) through the hinge shaft; the device is an I-shaped or concave structure, and force is transferred through the two linkage pieces with the cross bar structures;

as shown in the rear structure of fig. 4, the front rocking linkage frame (8) and the rear rocking linkage frame (9) at least comprise a set of two front rocking plates (19) and a set of two rear rocking plates (20) which are symmetrically arranged, two rocking direction clamping blocks (21) which are clamped up and down are connected between the front rocking plates and the rear rocking plates through transverse hinge shafts, and 4 rocking direction clamping blocks are in a groined structure after being connected; the structure is actually a forward-extending or backward-pulling connecting component which can be seen on a curtain or a blind, but only two pieces of swinging clamping blocks (21) which are only used for pulling the swinging clamping blocks (21) clamped between the two pieces are arranged, and the swinging clamping blocks (21) are main objects for driving a steel wire rope clamped between the two pieces;

as shown in fig. 7 and 9, the front swing steel wire (3) is sleeved on the front swing hook (5), and the rear swing steel wire (4) is led into the swing clamping block (21) of the front swing linkage frame (8) and led into the swing clamping block (21) of the rear swing linkage frame (9) after passing through the swing clamping block and led out.

The operation of the above-mentioned several structures and the action program of its traction mechanism are as follows:

1. and (3) clamping the steel wire rope: when a heavy object needs to be lifted, the heavy object is tied to a lifting hook of a rear swing steel wire (4), a front swing lifting hook is fixed at a certain height, an upper opening handle is loosened, a hinged fulcrum (namely a hinged shaft connecting rod bidirectional connecting structure) of the upper opening handle is loosened to be more than 45 degrees, a swing clamping block (21) in an unsetting state is also loosened (the clamping block is clamped only when the clamping block is inclined to be less than 45 degrees), a steel wire rope penetrates through the front swing clamping block (21) and the rear swing clamping block (21), one end of the steel wire rope led out from a leading groove of the swing clamping block (21) extends out of a shell, and the other end of the steel wire rope is tied with the object or the lifting hook needing to be lifted; the upper opening handle is pushed inwards downwards, so that the positioning hook on the upper surface of the upper opening handle hooks the locking pin, and the supporting points of the upper opening handle and the upper opening handle are positioned at the moment, so that the internal traction mechanism is in a working state;

2. and (3) releasing the steel wire rope, and installing the lengthened rocker arm of the upward opening handle (6) on the rocker arm in an extending way towards the right side (the vertical state is downward). The rocker arm is rocked up and down, the lock piece group (10) is connected back and forth to form a hinged connecting rod of a parallelogram tightening mechanism, a front rocking plate and a rear rocking plate of a parallelogram and the rocking direction clamping block acts, and the clamping block moves upwards when clamping the steel wire rope and moves downwards when loosening the steel wire rope. Meanwhile, the lock piece groups (10) are connected in a front-back shaking manner to form a wall plate of a parallelogram elastic mechanism, parallelogram side blocks and clamping blocks to act, so that the clamping blocks move downwards when the steel wire rope is loosened and move upwards when the steel wire rope is clamped. Because the front rocking plate (19) and the rear rocking plate (20) of the parallelogram are respectively arranged at the upper part and the lower part of the rocker fulcrum, when the rocker is rocked, the front and rear rocking connecting lock piece group (10) of the linked parallelogram forms an elastic clamping mechanism because of the reduction of the angle and the approach of 90 degrees, so that the rocking clamping blocks are loosened or clamped, the clamping and loosening states are alternated, in the loosening process, 1 segment of steel wire rope is loosened between the front rocking structure and the rear rocking structure, so that the lengthened rocker arm of the upper opening handle (6) is rocked, and because the weight of the hook is the steel wire rope, the heavy object can be lifted upwards, if the lifted weight exceeds the specified weight, the lengthened rocker arm of the upper opening handle (6) automatically loosens a segment to fall to one end of the heavy object when the rocking is finished, the whole steel wire rope is tightened, so that if the front loosening action is not continued, the safety of dropping the whole heavy object can be ensured; and the safety of traction and lifting is ensured beyond the structure of front swing just described. If the heavy object is unloaded, the lengthened rocker arm of the upper opening handle (6) is installed and lengthened on the upper opening handle, the operation procedure is the same as the lifting operation procedure, but the clamping block in the tightening mechanism is loosened when moving upwards and clamped when moving downwards, the moving directions of the clamping block and the clamping block in the tightening mechanism are opposite at the same time, and the tightening degree is different. If the object is towed by the embodiment, the front swing hook is fixed on the pile, the steel wire rope is fixed on the object to be towed, and the operation procedure is the same as that described above.

Preferably, the tail end of the linkage piece is provided with a linkage piece stop head (22). The linkage piece stopper (22) is used for pushing a square connecting rod of the front swing linkage frame (8) to tilt the front swing linkage frame (8) upwards.

Preferably, the bottom of the front swing linkage frame (8) is also hinged with a descending head blocking strip (23) in an く character shape, the left side of the descending head blocking strip (23) is hinged to the bottom of a front swing plate (19) of the front swing linkage frame (8), and the left side of the descending head blocking strip abuts against the left side of the descending handle (7). The structure can lead the bottom part to be automatically pushed forwards by forming a counterforce at the rear through the linkage spring part when the upward-opening handle (6) is loosened, so that the positions of the forward-shaking linkage frame (8) and the descending handle (7) are restored, and the manual restoration by a user is not needed, so that the user can omit the restoration action, and the labor-saving effect is achieved.

Preferably, an automatic pressure spring reset rod (24) is transversely connected and arranged between the upward opening handle (6) and the downward opening handle (7), the automatic pressure spring reset rod (24) comprises a U-shaped connecting rod (25), spring cores (26) and safety pinching heads (27), the tail ends of the U-shaped connecting rod (25) are inserted into the two spring cores (26) which are arranged in parallel in tandem, the tail ends of the spring cores (26) are hinged or hooked on the upward opening handle (6), the pressure springs (28) are sleeved on the whole bodies of the spring cores (26), and the safety pinching heads (27) are hinged in the middle of the head ends of the U-shaped connecting rod (25).

As preferredly preceding swing lifting hook (5) are including preceding colluding (29) and back buckle hook (30), and the tail arc piece bottom that back buckle hook (30) was colluded sets up and is kept off card (31), and preceding colluding (29) bottom bending type becomes and supports buckle piece (32), supports buckle piece (32) and sets up articulated trip shaft (33), and the structure that matches articulated trip shaft (33) sets up on U-shaped connecting rod (25) and keeps off position groove (34), and articulated trip shaft (33) card is gone into and is kept off position groove (34), supports buckle piece (32) and keep off card (31) and form the lock position round pin structure of stinging the card, and the head (27) is held between the fingers in the interlock insurance.

Preferably, the hinge heads (16) of the front linkage piece (11) and the rear linkage piece (12) are also provided with linkage hinge grooves (35) in a hollow manner, and a く -character-shaped linkage trigger piece (36) is arranged between the linkage hinge grooves (35) of the front linkage piece and the rear linkage piece. The linkage piece combined with the linkage trigger piece can basically achieve 100% of synchronization rate when moving, so that the transmission capacity is high, and the failure rate is low.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (6)

1. A tractor which is labor-saving and safe to use is characterized in that: the steel wire drawing mechanism comprises a shell (1), a drawing assembly (2), a front swing steel wire (3) and a rear swing steel wire (4), wherein the drawing assembly (2) comprises a front swing lifting hook (5), an upward opening handle (6), a descending handle (7), a front swing linkage frame (8), a rear swing linkage frame (9) and a front and rear swing connection locking piece group (10), the upward opening handle (6) is hinged at the rear position of the front swing lifting hook (5), the front and rear swing connection locking piece group (10) comprises a front linkage piece (11), a rear linkage piece (12) and a front swing frame pushing piece (13) clamped between the front linkage piece and the rear linkage piece and connected with the front swing frame pushing piece and the rear linkage piece in a hinged shaft mode, the front linkage piece (11) and the rear linkage piece (12) are consistent in structure, and the front hinge head (14) at the left end, a fixed linkage part (15) in the middle and a;

the tail end of the front swing hook (5) is hinged with a hinge shaft connecting rod (17), the hinge shaft connecting rod (17) extends backwards and is hinged to the upper opening handle (6), and the upper opening handle (6) is hinged with a front hinge head (14) of the upper opening handle (6) and the lower handle (7) through a hinge shaft respectively in the front and at the back;

the head end of the upward opening handle (6) is provided with a hinged connecting rod connected with the head end of the linkage sheet (12), the fixed linkage part (15) of the linkage sheet (12) is downwards provided with a lower hinge shaft connected to the front rocking linkage frame (8), and the bottom of the front rocking linkage frame (8) is hinged with the descending handle (7);

the rear swing linkage frame (9) is clamped between a front hinge head (14) of the front linkage sheet (11) and a front hinge head (14) of the rear linkage sheet (12) through a hinge shaft, and the bottom of the rear swing linkage frame (9) is obliquely and forwardly provided with a descending handle connecting rod (18) which is connected to the descending handle (7) through the hinge shaft;

the front rocking linkage frame (8) and the rear rocking linkage frame (9) at least comprise a group of two front rocking plates (19) and a group of two rear rocking plates (20) which are symmetrically arranged, two rocking direction clamping blocks (21) which are clamped up and down are connected between the front rocking plates and the rear rocking plates through transverse hinge shafts, and 4 rocking direction clamping blocks are in a groined structure after being connected;

the front swing steel wire (3) is sleeved on the front swing lifting hook (5), the rear swing steel wire (4) is led into the swing direction clamping block (21) of the front swing linkage frame (8), and the swing direction clamping block (21) penetrates through the swing direction clamping block and led into the rear swing linkage frame (9) and is led out.

2. A retractor as claimed in claim 1, which is labor saving and safe in use, wherein: the tail end of the linkage piece is provided with a linkage piece stopper (22).

3. A retractor as claimed in claim 1, which is labor saving and safe in use, wherein: the bottom of the front swing linkage frame (8) is also hinged with a descending head barrier strip (23) in the shape of く characters, the left side of the descending head barrier strip (23) is hinged to the bottom of a front swing plate (19) of the front swing linkage frame (8), and the left side of the descending head barrier strip is abutted to the left side of the descending handle (7).

4. A retractor as claimed in claim 1, which is labor saving and safe in use, wherein: go up and open handle (6), decline and still transverse connection is provided with automatic pressure spring release link (24) between handle (7), automatic pressure spring release link (24) are held between the head (27) including U-shaped connecting rod (25), spring core (26), insurance, and U-shaped connecting rod (25) tail end is inserted and is closed two tandem parallel arrangement's spring core (26), and spring core (26) tail end is articulated or is colluded and hang on last handle (6) of opening, and spring core (26) whole body registrate pressure spring (28), and articulated pressing between the fingers head (27) of the insurance of holding between the head end of U-shaped connecting rod (25).

5. A retractor as claimed in claim 1, which is labor saving and safe in use, wherein: preceding lifting hook (5) collude (30) including preceding colluding (29) and back screens arc, the tail arc piece bottom that back screens arc colluded (30) sets up and keeps off card (31), preceding collude (29) bottom bending type becomes to support buckle piece (32), support buckle piece (32) and set up articulated calorie of axle (33), the structure that matches articulated calorie of axle (33) sets up on U-shaped connecting rod (25) and keeps off position groove (34), articulated calorie of axle (33) card is gone into and is kept off position groove (34), support buckle piece (32) and keep off card (31) and form and sting the card structure, head (27) are held between the fingers to the interlock insurance.

6. A retractor as claimed in claim 1, which is labor saving and safe in use, wherein: the hook hinge heads of the front linkage piece and the rear linkage piece are also provided with linkage hinge grooves (35) in a hollow manner, and a く character-shaped linkage trigger piece (36) is arranged between the linkage hinge grooves.

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