CN112678731B - Rear pull rod type lifter and platform loading and unloading method - Google Patents
Rear pull rod type lifter and platform loading and unloading method Download PDFInfo
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- CN112678731B CN112678731B CN202011558117.3A CN202011558117A CN112678731B CN 112678731 B CN112678731 B CN 112678731B CN 202011558117 A CN202011558117 A CN 202011558117A CN 112678731 B CN112678731 B CN 112678731B
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Abstract
The invention discloses a rear-pull hanging rod type lifter and a method for loading and unloading a platform, wherein the lifter comprises a lifting support, a lifting device and a driving device connected with the lifting device are arranged on the lifting support, the lifting device is connected with a supporting platform to drive the supporting platform to lift, the supporting platform is positioned at the front end of the lifting support, a travelling wheel is arranged at the lower end of the lifting support, the front part of a hanging rod is connected with the lifting device or the supporting platform through a horizontal moving mechanism, when the hanging rod moves forwards to a first position, the rear end of the hanging rod does not exceed the rear end of the lifting support, and when the hanging rod moves backwards to a second position, the rear end of the hanging rod extends out of the rear end of the lifting support. The rear pull rod type lifting machine disclosed by the invention can realize the upper platform through the rear pull rod without a control system, and is more convenient to operate.
Description
Technical Field
The invention relates to the technical field of motor vehicles, in particular to a rear pull rod type lifting machine and a platform loading and unloading method.
Background
The invention patent (application number 202010995070.0, published: 2020.11.20, published: CN111959591A) applied by the applicant discloses a walking, lifting and platform loading integrated machine, a control method and a platform loading method, which comprises a lifting support, wherein a lifting device and a driving device connected with the lifting device are arranged on the lifting support, the lifting device is connected with a supporting table to drive the supporting table to lift, and a supporting table wheel is arranged on the supporting table; the lower end of the lifting support is provided with a travelling wheel, the lower end of the lifting support extends forwards to form a support arm, the support arm is detachably mounted on the lifting support, and the tail end of the support arm is provided with a support wheel; when the supporting platform is lowered to the lowest end, the supporting platform wheels on the supporting platform are lower than the supporting wheels.
The upper platform is realized by adopting a mode of mounting and dismounting the supporting arm, and the operation is relatively complex.
Disclosure of Invention
For solving the problems in the prior art, the invention provides a rear pull rod type lifting machine and a platform loading and unloading method.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a back pull-rod type machine of lifting, includes the lifting support, be provided with elevating gear on the lifting support and the drive arrangement who links to each other with elevating gear, elevating gear links to each other with the saddle, drives the saddle and goes up and down, the saddle is located the front end that lifts the support, lift the support lower extreme and install the walking wheel, still include the peg, the anterior of peg pass through horizontal migration mechanism with elevating gear or saddle link to each other, when the peg moves forward to primary importance, the rear end of peg is no longer than the rear end that lifts the support, when the peg moves backward to secondary importance, the rear end of peg stretches out the rear end that lifts the support.
Optionally, the horizontal moving mechanism includes a slide way arranged on the lifting device or the supporting platform, and the hanging rod horizontally slides along the slide way.
Optionally, a handle is arranged at the rear end of the hanging rod.
Optionally, the rear end of peg forms the bearing section, and the lower surface of bearing section is equipped with anti-skidding bead.
Optionally, the rear end of the hanging rod forms a bearing section, and the lower front side of the bearing section is provided with a limiting table.
Optionally, a support frame extends forwards from the lower end of the lifting support, and a support wheel is arranged at the lower end of the support frame.
Optionally, the lifting device comprises a driving wheel and a driven wheel which are installed on the lifting support, a conveying belt is arranged between the driving wheel and the driven wheel, and the driving device drives the conveying belt to move.
Optionally, the lower end of the lifting support is hinged to a track assembly, the track assembly is connected to a track retracting and releasing mechanism, the track retracting and releasing mechanism is connected to the lifting support, and the track assembly is connected to the driving device.
Optionally, a two-gear clutch is arranged between the driving device and the lifting device, and includes: an output shaft for outputting an output torque of the power structure; a drive gear mounted on an output shaft; a driven gear for connecting the moving structure to transmit an output torque of the power structure; the clutch structure comprises a clutch gear and a driving structure for driving the clutch gear to generate displacement, when the clutch gear is located at a first position, the clutch gear is simultaneously meshed with the driving gear and the driven gear, when the clutch gear is located at a second position, the clutch gear is simultaneously separated from the driving gear and the driven gear, and at the moment, the driving gear is separated from the driven gear.
Optionally, the clutch gear is mounted on the pinion shaft and is composed of at least one cylindrical gear, when the clutch gear is one cylindrical gear, one cylindrical gear corresponds to the driving gear and the driven gear at the same time, when the clutch gear is two or more cylindrical gears, at least one of the cylindrical gears corresponds to one of the driving gear or the driven gear, and the other cylindrical gears correspond to two of the driving gear or the driven gear.
Optionally, the driving gear and the driven gear are arranged in parallel, and the thickness of the clutch gear is consistent with the total thickness of the driving gear and the driven gear.
Optionally, the driving structure includes:
the small gear shaft is arranged on the gear sliding frame;
and the displacement structure is connected with the gear sliding frame to drive the clutch gear to generate displacement.
Optionally, the gear carriage is connected with a first elastic member, the first elastic member applies an elastic force or a tensile force to the gear carriage, the elastic force or the tensile force being far away from the driving gear and the driven gear, and the displacement structure includes:
the displacement piece is internally provided with a sliding chute;
one end of the pressing piece is positioned in the sliding groove, and the other end of the pressing piece protrudes out of the sliding groove;
the first fixing piece is provided with a pressing surface and a stopping surface, when the pressing piece slides to the pressing surface, the pressing surface presses the pressing piece and the displacement piece downwards so as to drive the clutch gear to be at the first position, when the pressing piece slides to the stopping surface, the gear sliding frame drives the displacement piece and the pressing piece to move upwards under the action of the first elastic piece so as to drive the clutch gear to be at the second position, and the stopping surface stops the pressing piece from moving towards the pressing surface;
and the second elastic piece applies elastic force or pulling force to the pressing piece, wherein the pressing piece slides to the pressing surface or the stopping surface in the sliding groove.
Optionally, one end of the displacement member is a hinged end for connecting a hinged point, and the other end of the displacement member is a pressing end for rotating the displacement member around the hinged point, and when the pressing end is pressed, the pressing member can be slid to the pressing surface.
Optionally, a push-pull piece is further arranged in the sliding groove, and the push-pull piece is connected with the pressing piece.
Optionally, the gear fixing device further comprises a gear fixing support, wherein a strip-shaped sliding hole is formed in the gear fixing support, and the small gear shaft extends into the strip-shaped sliding hole.
The application method of the one-driving-two gear clutch comprises the following steps:
when the driving structure drives the clutch gear to be at the first position, the clutch gear is simultaneously meshed with the driving gear and the driven gear, and the driving gear rotates to drive the moving structure to move; when the driving structure drives the clutch gear to be at the second position, the clutch gear is separated from the driving gear and the driven gear at the same time, at the moment, the driving gear is separated from the driven gear, and the driving gear cannot drive the moving structure to move due to rotation.
The method for lifting the platform of the rear pull rod type lifter comprises the following steps;
a step of loading a platform:
(1) the lifting support is moved to the position near the platform, the rear end of the lifting support faces the platform, and the hanging rod is located at the first position;
(2) the driving device drives the lifting device to ascend, the lifting device drives the support table to move upwards, and the support table drives the hanging rod to move upwards;
(3) the hanging rod rises to the platform plane, and the lifting device stops;
(4) moving the hanging rod to a second position to support the rear end of the hanging rod on the platform plane or to enable the rear end of the hanging rod to be positioned above the platform plane;
(5) the driving device drives the lifting device to descend, and the lifting device drives the lifting support to ascend until the lifting support ascends to the uppermost end because the hanging rod is supported on the platform;
(6) the lifting support is dragged to the upper part of the platform, and the rear pull rod type lifter is dragged to the position above the platform under the rolling action of the travelling wheels
On the platform;
the following platform steps:
(1) walking to the edge of the platform, enabling the rear end of the lifting support to face the platform, and enabling the hanging rod to be located at the second position;
(2) pushing the lifting support to the edge of the platform, enabling the travelling wheels to roll to the outer part of the edge of the platform, and enabling the rear end of the hanging rod to be supported on the platform;
(3) the driving device drives the lifting device to ascend, and the lifting device drives the lifting support to move downwards;
(4) when the travelling wheels descend to the ground below the platform or the platform below the platform, the lifting device stops;
(5) moving the hanging rod to a first position;
(6) the driving device drives the lifting device to descend, the lifting device drives the support table to move downwards, and the support table drives the hanging rod to move downwards until the support table descends to the lowest end.
In the description of the invention, the lifting carriage is generally referred to as the main body of the lift and not as the lifting carriage itself in the drawings, for example when the lift includes a track assembly as shown, the track assembly is understood to be included in the lifting carriage so that when the suspension bar is in the first position, the rear end of the suspension bar does not extend beyond the rear end of the lifting carriage, i.e. the rear end of the track assembly.
The rear pull rod type lifting machine disclosed by the invention can realize the upper platform through the rear pull rod without a control system, and is more convenient to operate.
Drawings
FIG. 1 is a front view of a one-to-two gear clutch of the present invention;
FIG. 2 is a view taken along line B-B of FIG. 1;
FIG. 3 is a view taken along line C-C of FIG. 1;
FIG. 4 is a left side view of FIG. 1;
FIG. 5 is a view from direction D-D of FIG. 4;
FIG. 6 is a top view of FIG. 1;
FIG. 7 is a right side view of FIG. 1;
FIG. 8 is a perspective view of FIG. 1;
FIG. 9 is a schematic view of the lift of the present invention;
FIG. 10 is a view from the direction B-B of FIG. 9;
FIG. 11 is a perspective view of the rear hitch bar lift of the present invention (with one of the running wheels removed);
FIG. 12 is an enlarged view of portion A of FIG. 11;
FIG. 13 is a front view of FIG. 11 (with the hanger bar in a first position);
fig. 14 is a front view (with the cloth rail in the second position).
In the figure:
lifting the support 1;
a lifting device 2; a drive sprocket 21; a driven sprocket 22; a conveyor belt 23;
a drive device 3;
a saddle 4;
a traveling wheel 5;
a hanging rod 6; a handle 61; an anti-slip rib 62; a limit table 63;
a slideway 7;
a support frame 8;
a support wheel 9;
a carrier two-gear clutch 10; an output shaft 101; a drive gear 102; a driven gear 103; a clutch gear 104; a pinion shaft 105; a gear carriage 106; a first elastic member 107; a displacement member 108; a chute 1081; a hinged end 1082; a pressing end 1083; a pressing member 109; a second elastic member 1010; a push-pull member 1011; a first fixing member 1012; pressing surface 10121; a stop surface 10122; a gear fixing bracket 1013; a long strip-shaped sliding hole 10131; a shaft pad 1014;
Detailed Description
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
Example 1
As shown in fig. 9-14, the rear-pull rod type lifter includes a lifting support 1, a lifting device 2, a driving device 3, a pallet 4 and a hanging rod 6 (or a hook).
The lifting support 1 is a main body part of the lifter and comprises two main body columns and a plurality of cross beams connected between the main body columns, and an additional device, namely a crawler assembly 11. The upper end of the lifting support 1 is provided with a handle, and the lower end is provided with a walking wheel 5.
The lifting device 2 is arranged on the lifting support 1. The lifting device 2 can adopt a conventional structure, and can realize the reciprocating motion of the supporting platform 4 in the up-down direction. As an example, the lifting device 2 includes a driving sprocket 21 and a driven sprocket 22 installed on upper and lower end beams, a conveyor belt 23 is provided between the driving sprocket 21 and the driven sprocket 22, and one of forms of the conveyor belt 23 is a conveyor chain. The conveyor belt 23 is driven by the drive sprocket 21, the drive sprocket 21 being driven by the drive means 3. The conveyor belt 23 is connected to the pallet 4 at one point, thereby driving the pallet 4 to reciprocate up and down.
Drive arrangement 3 links to each other with elevating gear 2, and drive arrangement 3 can select for the motor, and the speed reducer is connected to the motor, and the speed reducer drive sprocket 21 to drive conveyer belt 23 and remove.
The front part of the hanging rod 6 is connected with the lifting device 2 or the supporting platform 4 through a horizontal moving mechanism, when the hanging rod 6 moves forwards to a first position, the rear end of the hanging rod 6 does not exceed the rear end of the lifting support 1, and when the hanging rod 6 moves backwards to a second position, the rear end of the hanging rod 6 extends out of the rear end of the lifting support 1. The horizontal movement mechanism is a mechanism capable of providing forward and backward movement of the hanging rod 6, and is used for connecting the lifting device 2 or the supporting platform 4 with the hanging rod 6 and supporting the hanging rod 6. As an example, the horizontal movement mechanism includes a slide 7 provided on the lifting device 2 or the pallet 4, and the hanging bar 6 horizontally slides along the slide 7. The slideway 7 has a certain length, so that when the hanging rod 6 is supported on a platform (such as a carriage surface), a larger supporting force can be provided for the lifter. As a specific example, the left and right sides of the supporting platform 4 are both provided with slideways 7, and the left and right hanging rods 6 respectively slide through the slideways 7.
In order to facilitate the operator to pull backwards manually, the rear end of the hanging rod 6 is provided with a handle 61. The handle 61 is a rotatable handle 61. For convenience of description, the rear end of the hanging rod 6 forms a support section, which is a portion protruding from the lifting bracket 1 for supporting on the upper surface of the platform edge. The lower surface of the support section is provided with anti-slip ribs 62. The lower part front side of bearing section has spacing platform 63, prevents that the machine of lifting from being too close to the platform edge, is blockked by the platform edge when last platform.
In order to facilitate the lifting machine to be placed on the ground or a platform, the lower end of the lifting support 1 extends forwards to form a support frame 8, and the lower end of the support frame 8 is provided with a support wheel 9. In a walking state, the lifting machine can be inclined backwards, the walking handle supports the whole lifting machine through the walking wheels 5 and walks, and in a non-walking state, the lifting machine can be vertically placed, and the walking wheels 5 and the supporting wheels 9 jointly support the whole lifting machine. The support frame 8 may be located below the pallet 4 and separated from the pallet 4.
As an example, a device for cutting off power transmission between the driving device 3 and the lifting device 2, such as an electromagnetic clutch or a one-carrier two-gear clutch 10, is provided between the driving device 3 and the lifting device 2. A two-carrier gear clutch 10 is constructed as shown in embodiment 2.
In order to facilitate climbing, the lower end of the lifting support 1 is hinged with a crawler assembly 11, the crawler assembly 11 is connected with a crawler retraction and release mechanism, the crawler retraction and release mechanism is connected with the lifting support 1, and the crawler assembly 11 is connected with the driving device 3.
The patent of this application (name: integrated machine for walking, lifting and landing, control method and method for getting on and off the platform, application number: 202010995070.0 published as 2020-11-20, publication number: CN111959591A) refers to an example of the connection mode between the pallet 4 and the lifting support 1, the crawler assembly 11 and the connection structure.
The method for lifting the platform of the rear pull rod type lifter comprises the following steps;
(1) a step of loading a platform: walking to the position near the platform, enabling the rear end of the lifting support 1 to face the platform, and enabling the hanging rod 6 to be located at the first position;
(2) the driving device 3 drives the lifting device 2 to ascend, the lifting device 2 drives the support table 4 to move upwards, and the support table 4 drives the hanging rod 6 to move upwards;
(3) the hanging rod 6 rises to the platform plane, and the lifting device 2 stops;
(4) moving the hanging rod 6 to a second position to support the rear end of the hanging rod 6 on the platform plane or to position the rear end of the hanging rod 6 above the platform plane;
(5) the driving device 3 drives the lifting device 2 to descend, and the lifting device 2 drives the lifting support 1 to ascend until the lifting support 1 ascends to the uppermost end due to the fact that the hanging rod 6 is supported on the platform;
(6) dragging the lifting support 1 to the upper part of the platform, and dragging the rear pull rod type lifter to the platform under the rolling action of the travelling wheels 5;
the following platform steps:
(1) the platform is walked to the edge of the platform, the rear end of the lifting support 1 faces the platform, and the hanging rod 6 is positioned at a second position;
(2) the lifting support 1 is pushed towards the edge of the platform, so that the walking wheels 5 roll to the outer part of the edge of the platform, and the rear end of the hanging rod 6 is supported on the platform;
(3) the driving device 3 drives the lifting device 2 to ascend, and the lifting device 2 drives the lifting support 1 to move downwards;
(4) when the travelling wheels 5 descend to the ground below the platform or the platform below the platform, the lifting device 2 stops;
(5) moving the hanging rod 6 to the first position;
(6) the driving device 3 drives the lifting device 2 to descend, the lifting device 2 drives the supporting platform 4 to move downwards, and the supporting platform 4 drives the hanging rod 6 to move downwards until the supporting platform 4 descends to the lowest end.
Example 2
As shown in fig. 1-8, the one-to-two gear clutch includes an output shaft 101, a driving gear 102, a driven gear 103 and a clutch structure.
The output shaft 101 is used to output the output torque of the power structure. The driving gear 102 is mounted on the output shaft 101, and the output shaft 101 rotates to drive the driving gear 102 to rotate. The driven gear 103 is used to connect the moving structure to transmit the output torque of the power structure. The clutch structure comprises a clutch gear 104 and a driving structure for driving the clutch gear 104 to generate displacement, when the clutch gear 104 is in a first position, the clutch gear 104 is simultaneously meshed with the driving gear 102 and the driven gear 103, and when the clutch gear 104 is in a second position, the clutch gear 104 is simultaneously separated from the driving gear 102 and the driven gear 103, and at the moment, the driving gear 102 is separated from the driven gear 103.
Specifically, the driving gear 102, the driven gear 103, and the clutch gear 104 are all cylindrical gears. The clutch gear 104 is mounted on a pinion shaft 105 and the clutch gear 104 consists of at least one cylindrical gear. When the clutch gear 104 is a cylindrical gear, one cylindrical gear corresponds to both the driving gear 102 and the driven gear 103, and when the clutch gear 104 is two or more cylindrical gears, at least one of the cylindrical gears corresponds to one of the driving gear 102 or the driven gear 103, and the other cylindrical gears correspond to two of the driving gear 102 or the driven gear 103.
The driving gear 102 and the driven gear 103 may be arranged in various ways, in this example, they are arranged in parallel, and the thickness of the clutch gear 104 is consistent with the total thickness of the driving gear 102 and the driven gear 103, so as to make the clutch gear 104 have a larger meshing area with the driving gear 102 and the driven gear 103.
As an example, the driving structure includes: a gear carriage 106 and a displacement mechanism. Wherein the pinion shaft 105 is mounted on the gear sliding frame 106, and the clutch gear 104 is driven to move and provide support by the gear sliding frame 106. The displacement mechanism is connected to the gear carriage 106 to displace the clutch gear 104. Advantageously, the gear carriage 106 is connected to a first elastic member 107, and the first elastic member 107 applies an elastic force or a tensile force to the gear carriage 106 away from the driving gear 102 and the driven gear 103. Specifically, the displacement structure includes a displacement member 108, a pressing member 109, a first fixing member 1012, and a second elastic member 1010. A sliding groove 1081 is formed in the displacement member 108, one end of the pressing member 109 is located in the sliding groove 1081, and the other end protrudes out of the sliding groove 1081. First mounting 1012 has press surface 10121 and stopping surface 10122, when pressing member 109 slided to press surface 10121, press surface 10121 pushed down pressing member 109 and displacement piece 108 to drive clutch gear 104 and be in the first position, when pressing member 109 slided to stopping surface 10122, gear carriage 106 drove displacement piece 108 and pressing member 109 and moved up under the effect of first elastic component 107, thereby drive clutch gear 104 and be in the second position, stopping surface 10122 prevented pressing member 109 from moving to press surface 10121. The second elastic member 1010 applies an elastic force or a tensile force to the pressing member 109 sliding in the sliding groove 1081 to the pressing surface 10121 or the stopping surface 10122.
Specifically, the second elastic member 1010 is a spring and is disposed in the slide groove 1081. As shown, one end of the spring abuts against the sliding groove 1081, and the other end of the spring abuts against the pushing and pulling element 1011. The first elastic member 107 is a tension spring, which provides an upward tension to the gear sliding rack 106, and as shown in the figure, the lower end of the tension spring is connected to the gear sliding rack 106, and the upper end is connected to the gear fixing bracket 1013.
As an example, the displacement member 108 has a hinge end 1082 at one end for connecting a hinge point and a pressing end 1083 at the other end for rotating the displacement member 108 around the hinge point, and when the pressing end 1083 is pressed, the pressing member 109 can be slid to the pressing surface 10121. As shown, the hinge point is pivotally connected to the gear fixing bracket 1013. The displacement member 108 is rod-shaped and extends outward to increase the downward pressing force moment.
As a preferred example, a push-pull member 1011 is further disposed in the sliding groove 1081, and the push-pull member 1011 is connected to the pressing member 109. The push-pull member 1011 is convenient to operate, and the using process is as follows: (1) when the transmission is required, the pressing end 1083 of the displacement member 108 is pressed downward, and the displacement member 108 rotates downward around the hinge point, so as to drive the gear sliding rack 106 and the clutch gear 104 to move downward to the first position. Meanwhile, the pressing piece 109 moves downwards until the lower end of the first fixing piece 1012 (the upper transverse plate of the gear fixing bracket 1013) is reached, the pressing piece 109 slides the lower end of the pressing surface 10121 under the action of the second elastic piece 1010, and under the action of the pressing surface 10121, the clutch gear 104 protects the first position to realize transmission; (2) when the separation is needed, the pressing piece 109 is pushed outwards (when the pushing and pulling piece 1011 is pushed, the pushing and pulling piece 1011 is pushed), the pressing piece 109 overcomes the elastic force of the second elastic piece 1010 and slides outwards along the sliding groove 1081 until the pressing piece 109 leaves the pressing surface 10121, the pressing effect of the pressing surface 10121 is lost, the gear sliding frame 106 moves upwards under the effect of the first elastic piece 107 to drive the displacement piece 108 to rotate upwards around the hinge point, the pressing piece 109 moves upwards, the stopping surface 10122 prevents the pressing piece 109 from moving towards the pressing surface 10121 until the clutch gear 104 is located at the second position, the second position is maintained under the effect of the first elastic piece 107, the transmission is interrupted, and the separation is achieved.
As a specific example, the gear fixing bracket 1013 is further included, and the gear fixing bracket 1013 is provided with an elongated sliding hole 10131, and the small toothed shaft 105 extends into the elongated sliding hole 10131. When the gear carriage 106 moves, the pinion shaft 105 moves along the elongated slide hole 10131.
As an application example, the side of the driven gear 103 is connected to the driving sprocket 21 by a plurality of shaft pads 1014, so that the sprocket-chain transmission can be realized.
The application method of the one-drag two-gear clutch comprises the following steps:
when the driving structure drives the clutch gear 104 to be at the first position, the clutch gear 104 is simultaneously meshed with the driving gear 102 and the driven gear 103, and the driving gear 102 rotates to drive the moving structure to move; when the driving structure drives the clutch gear 104 to be in the second position, the clutch gear 104 is simultaneously separated from the driving gear 102 and the driven gear 103, at this time, the driving gear 102 is separated from the driven gear 103, and the driving gear 102 cannot drive the moving structure to move due to rotation.
As shown in fig. 9-10, a lifting machine including the above one-driving-two gear clutch includes a lifting support 1 and a supporting platform 4, the lifting support 1 is provided with a driving motor, the lifting machine further includes the above one-driving-two gear clutch, an output shaft 101 is connected with the driving motor, and a driven gear 103 drives the supporting platform 4 to move up and down on the lifting support 1.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A rear pull hanging rod type lifter comprises a lifting support, wherein a lifting device and a driving device connected with the lifting device are arranged on the lifting support, the lifting device is connected with a supporting table to drive the supporting table to lift, the supporting table is positioned at the front end of the lifting support, and traveling wheels are mounted at the lower end of the lifting support; be equipped with one between drive arrangement and the elevating gear and hold in the palm two gear clutch, include:
an output shaft for outputting an output torque of the drive device;
the driving gear is arranged on the output shaft;
the driven gear is used for connecting the lifting device to transmit the output torque of the power structure;
the clutch structure comprises a clutch gear and a driving structure for driving the clutch gear to generate displacement, when the clutch gear is at a first position, the clutch gear is simultaneously meshed with the driving gear and the driven gear, when the clutch gear is at a second position, the clutch gear is simultaneously separated from the driving gear and the driven gear, and at the moment, the driving gear is separated from the driven gear;
the lower end of the lifting support is hinged with a crawler assembly, the crawler assembly is connected with a crawler retraction jack, the crawler retraction jack is connected with the lifting support, and the crawler assembly is connected with the driving device;
the driving structure includes: the gear sliding frame drives the clutch gear to move through the gear sliding frame, and the displacement structure is connected with the gear sliding frame to drive the clutch gear to generate displacement; the gear sliding frame is connected with a first elastic piece, and the first elastic piece applies elasticity or pulling force far away from the driving gear and the driven gear to the gear sliding frame; the displacement structure comprises a displacement piece, a pressing piece, a first fixing piece and a second elastic piece, wherein a sliding groove is formed in the displacement piece, one end of the pressing piece is positioned in the sliding groove, the other end of the pressing piece protrudes out of the sliding groove, and the first fixing piece is provided with a pressing surface and a stopping surface;
the clutch gear is arranged on the small gear shaft, the gear fixing support is provided with a strip-shaped sliding hole, the small gear shaft extends into the strip-shaped sliding hole, and when the gear sliding frame moves, the small gear shaft moves along the strip-shaped sliding hole;
one end of the displacement piece is a hinged end and is used for connecting a hinged point, the other end of the displacement piece is a pressing end and is used for enabling the displacement piece to rotate around the hinged point, when the pressing end is pressed down, the pressing piece can be slid to the pressing surface, the hinged point is pivoted on the gear fixing support, the displacement piece is rod-shaped and extends outwards to increase the downward pressing moment;
when the pressing piece slides to the pressing surface, the pressing surface presses the pressing piece and the displacement piece downwards, so that the clutch gear is driven to be located at the first position, when the pressing piece slides to the stopping surface, the gear sliding frame drives the displacement piece and the pressing piece to move upwards under the action of the first elastic piece, so that the clutch gear is driven to be located at the second position, the stopping surface stops the pressing piece to move towards the pressing surface, and the second elastic piece applies the pressing piece to the elastic force or the tensile force which slides to the pressing surface or the stopping surface in the sliding groove.
2. A rear-pull-rod lift according to claim 1, wherein said horizontal movement mechanism comprises a slide provided on the lifting device or the pallet, along which said rod slides horizontally.
3. The rear hitch bar lift of claim 1, wherein a handle is provided at a rear end of the hitch bar.
4. The rear hitch bar lift of claim 1, wherein the rear end of the hitch bar forms a support section, and the lower surface of the support section is provided with anti-slip ridges.
5. The rear hitch bar lift of claim 1, wherein the rear end of the hitch bar forms a support section, and a lower front side of the support section has a stop.
6. The rear drawbar lift according to claim 1, wherein a support frame extends forward from the lower end of the lift frame, and a support wheel is provided at the lower end of the support frame.
7. A rear-drawbar lift according to claim 1, wherein the lifting device comprises a driving pulley and a driven pulley mounted on the lifting support, a conveyor belt is disposed between the driving pulley and the driven pulley, and the driving device drives the conveyor belt to move.
8. The method for lowering and raising a platform of a rear-pull rod elevator according to any one of claims 1 to 7, comprising the steps of;
a step of loading a platform:
(1) walking to the position near the platform, enabling the rear end of the lifting support to face the platform, and enabling the hanging rod to be located at the first position;
(2) the driving device drives the lifting device to ascend, the lifting device drives the support table to move upwards, and the support table drives the hanging rod to move upwards;
the hanging rod rises to the platform plane, and the lifting device stops;
(4) moving the hanging rod to a second position to support the rear end of the hanging rod on the platform plane or to enable the rear end of the hanging rod to be positioned above the platform plane;
(5) the driving device drives the lifting device to descend, and the lifting device drives the lifting support to ascend until the lifting support ascends to the uppermost end due to the fact that the hanging rod is supported on the platform;
(5) dragging the lifting support above the platform, and dragging the rear pull rod type lifter onto the platform under the rolling action of the travelling wheels;
the following platform steps:
(1) the lifting support is moved to the edge of the platform, the rear end of the lifting support faces the platform, and the hanging rod is located at the second position;
pushing the lifting support to the edge of the platform, enabling the travelling wheels to roll to the outer part of the edge of the platform, and enabling the rear end of the hanging rod to be supported on the platform;
(3) the driving device drives the lifting device to ascend, and the lifting device drives the lifting support to move downwards;
(4) when the travelling wheels descend to the ground below the platform or the platform below the platform, the lifting device stops;
(5) moving the hanging rod to a first position;
(6) the driving device drives the lifting device to descend, the lifting device drives the support table to move downwards, and the support table drives the hanging rod to move downwards until the support table descends to the lowest end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| DE29720939U1 (en) * | 1997-11-26 | 1999-04-01 | Otto Bock Orthopädische Industrie Besitz- und Verwaltungs-Kommanditgesellschaft, 37115 Duderstadt | Safety device for stair climbing devices |
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| US6019567A (en) * | 1998-03-23 | 2000-02-01 | Lift Technologies, Inc. | Slidable load lifting system |
| JP2006193135A (en) * | 2004-04-16 | 2006-07-27 | Koichi Okamoto | Escalator cart |
| CN105752140A (en) * | 2016-04-22 | 2016-07-13 | 江南大学 | Foldable stair-climbing assisting trolley |
| CN206680139U (en) * | 2017-02-20 | 2017-11-28 | 贵州昂阳科技有限公司 | It is a kind of can up/down steps small-sized forklift |
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| CN112678731A (en) | 2021-04-20 |
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