CN114084208B - Locking pay-off dolly - Google Patents

Locking pay-off dolly Download PDF

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Publication number
CN114084208B
CN114084208B CN202111636224.8A CN202111636224A CN114084208B CN 114084208 B CN114084208 B CN 114084208B CN 202111636224 A CN202111636224 A CN 202111636224A CN 114084208 B CN114084208 B CN 114084208B
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China
Prior art keywords
block
side plate
locking
shaft
bearing
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Application number
CN202111636224.8A
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Chinese (zh)
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CN114084208A (en
Inventor
吴伟
何威
张加波
王传伟
潘旷
邢德胜
陈艺骏
黄庆涛
张丽
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CETC 38 Research Institute
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CETC 38 Research Institute
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Priority to CN202111636224.8A priority Critical patent/CN114084208B/en
Publication of CN114084208A publication Critical patent/CN114084208A/en
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Publication of CN114084208B publication Critical patent/CN114084208B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B3/00—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor
    • B62B3/002—Hand carts having more than one axis carrying transport wheels; Steering devices therefor; Equipment therefor characterised by a rectangular shape, involving sidewalls or racks
    • B62B3/005—Details of storage means, e.g. drawers, bins or racks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62B—HAND-PROPELLED VEHICLES, e.g. HAND CARTS OR PERAMBULATORS; SLEDGES
    • B62B5/00—Accessories or details specially adapted for hand carts
    • B62B5/04—Braking mechanisms; Locking devices against movement
    • B62B5/0438—Braking mechanisms; Locking devices against movement hand operated
    • B62B5/0442—Braking mechanisms; Locking devices against movement hand operated using a handle bar alone

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Handcart (AREA)

Abstract

The invention discloses a locking feeding trolley which comprises a fixed frame and a material placing rack, wherein the material placing rack is horizontally arranged on the fixed frame and is connected with the fixed frame through a damping block; a handlebar is arranged on the fixed frame, and a brake lever is arranged on the handlebar; a first edge retaining strip is arranged above the first side plate, a second edge retaining strip, an edge retaining strip and a third edge retaining strip are arranged above the second side plate, the edge retaining strip is arranged between the second edge retaining strip and the third edge retaining strip, a first locking assembly is arranged between the edge retaining strip and the second edge retaining strip, a second locking assembly is arranged between the edge retaining strip and the third edge retaining strip, the first locking assembly and the second locking assembly are in transmission connection through a transmission assembly, and the second locking assembly is connected with a brake handle through a control assembly; the invention reduces the arrangement of additional equipment such as a power supply or an air source and the like, and reduces the whole weight of the locking feeding trolley, thereby saving the operation cost of a company; improve material loading and unloading and conveying efficiency, save time cost.

Description

Locking pay-off dolly
Technical Field
The invention relates to the technical field of transportation equipment, in particular to a locking feeding trolley.
Background
The conveying device is a device for conveying, loading and unloading materials. Most of the existing material conveying and receiving trolleys are locked by pneumatic and electric devices or repeatedly operated for multiple times, and corresponding locking operation can be realized only by additional equipment provided with an air source or a power supply, so that the equipment is more complicated, and the weight of the material conveying and receiving trolley is easy to increase due to the addition of the additional equipment.
In view of the above-mentioned drawbacks, the inventors of the present invention have finally obtained the present invention through a long period of research and practice.
Disclosure of Invention
In order to solve the technical defects, the invention adopts the technical scheme that a locking feeding trolley is provided and comprises a fixed frame and a material placing frame, wherein the material placing frame is horizontally arranged on the fixed frame and is connected with the fixed frame through a damping block; a handlebar is arranged on the fixed frame, and a brake handle is arranged on the handlebar;
the material placing rack comprises a first bottom plate, a second bottom plate, a first side plate, a second side plate and a roller; the first bottom plate and the second bottom plate are arranged in parallel and fixedly arranged at two ends of the first side plate, the second side plate and the first side plate are arranged in parallel and fixedly arranged, the first bottom plate and the second bottom plate are respectively arranged at two ends of the second side plate and the first side plate, a plurality of rollers are arranged between the first side plate and the second side plate, and the rollers can rotate around the axes of the rollers;
the brake handle is characterized in that a first edge blocking strip is arranged above the first side plate, a second edge blocking strip, a blocking strip and a third edge blocking strip are arranged above the second side plate, the blocking strip is arranged between the second edge blocking strip and the third edge blocking strip, a first locking assembly is arranged between the blocking strip and the second edge blocking strip, a second locking assembly is arranged between the blocking strip and the third edge blocking strip, the first locking assembly and the second locking assembly are connected through a transmission assembly in a transmission mode, and the second locking assembly is connected with the brake handle through a control assembly.
Preferably, a first stop block, a limit screw and a buffer are arranged on two sides of the first bottom plate, the first stop block is fixedly arranged on the first bottom plate, and the limit screw and the buffer are arranged on the first stop block.
Preferably, the first bottom plate is provided with a control assembly, the control assembly comprises a hook, a stay wire fixing block and a first shaft, the hook is rotatably arranged on the first bottom plate through the first shaft, the brake handle is connected with the stay wire fixing block through a transmission line, the stay wire fixing block is fixedly connected with the hook, the transmission line is connected with the hook through the stay wire fixing block, and the hook is in contact with the first safety block of the second locking assembly.
Preferably, the transmission assembly comprises a linear slide rail, a third side plate and a first spring, the third side plate is connected with the second side plate in a sliding manner through the linear slide rail, the first spring is arranged between the third side plate and the second side plate, two ends of the first spring are respectively connected with the third side plate and the second side plate so as to provide elastic force, the third side plate moves in a direction away from the handlebar, a first unlocking block and a third unlocking block are arranged on the third side plate, the first unlocking block corresponds to the first locking assembly, and the third unlocking block corresponds to the second locking assembly.
Preferably, a second unlocking block is fixedly arranged at the end part, far away from the handlebar, of the third side plate, an unlocking shaft and a second spring are arranged in the second unlocking block, and the second spring provides elasticity for the unlocking shaft, so that the end part of the unlocking shaft extends out of the second unlocking block.
Preferably, a third limiting block is arranged on the second side plate, a limiting groove is formed in the third side plate, and the third limiting block is arranged in the limiting groove.
Preferably, the first locking assembly comprises a first torsion spring, a second shaft, a first bearing sleeve, a third bearing, a locking block and a control block, the first bearing sleeve is fixedly arranged on the second side plate, the second shaft is rotatably arranged in the first bearing sleeve through the third bearing, two ends of the first torsion spring are respectively connected with the second shaft and the first bearing sleeve, the control block is fixedly arranged on the second shaft, the control block is in contact with the first unlocking block, the locking block is sleeved on the second shaft, the locking block is connected with the control block through the second torsion spring, a limit pin is fixedly arranged on the control block, and the limit pin is in contact with the locking block.
Preferably, the second locking assembly comprises a bearing with a seat, a second spacer bush, a first safety block, a second safety block, a third safety block, a bearing connecting bolt, a third shaft and a second bearing bush, wherein the bearing with the seat and the second bearing bush are all arranged on the third shaft, the lower end of the third shaft is fixedly arranged on the first bottom plate through the bearing with the seat, the third shaft is fixedly arranged on the second side plate through the second bearing bush, the third bearing is arranged in the second bearing bush, the second safety block is fixedly arranged at the upper end of the third shaft, a shifting piece is arranged on the second safety block, the shifting piece is in contact with the third unlocking block, and the first safety block is fixedly arranged on the third shaft.
Preferably, a third safety block is arranged on the second safety block through a bearing connecting bolt, the third safety block is disc-shaped, a first bearing is arranged on the bearing connecting bolt to enable the third safety block to freely rotate around the bearing connecting bolt, and a second bearing is arranged on the outer circular surface of the third safety block.
Preferably, the second side plate is provided with a protective cover, the protective cover is provided with a display hole, the third side plate is provided with a position plate corresponding to the display hole, the position plate is fixedly arranged on the third side plate, and the position plate is provided with a green mark and a red mark.
Compared with the prior art, the invention has the beneficial effects that: the invention reduces the arrangement of additional equipment such as a power supply or an air source and the like, and reduces the whole weight of the locking feeding trolley, thereby saving the operation cost of a company; improve material loading and unloading and conveying efficiency, save time cost.
Drawings
FIG. 1 is a structural view of the locking feed trolley;
FIG. 2 is a structural view of the fixed frame;
FIG. 3 is a structural view of the material placement frame;
fig. 4 is an exploded view of the material placement rack;
fig. 5 is a view of a transmission structure of the material placing frame.
The figures in the drawings represent:
1-a fixed frame; 2-placing the material rack; 3-a vehicle body braking frame; 4-a vehicle body fixing plate; 5-a vehicle body; 6-handlebar; 7-handlebar sheath; 8-brake handle; 9-universal caster wheel; 10-a protective cover; 11-a guard plate; 12-a first base plate; 13-a first side panel; 14-a guide block; 15-a first stop; 16-a second base plate; 17-a first edge strip; 18-a first stopper; 19-a second stopper; 20-a second edge retaining strip; 21-a second side plate; 22-a barrier strip; 23-a third edge strip; 24-hanging hooks; 25-stay wire fixing block; 26-a limit screw; 27-a buffer; 28-a roller; 29-a third stopper; 30-a first shaft; 31-a first spring; 32-a first spacer; 33-a fixed shaft; 34-a damper block; 35-a first unlocking block; 36-position plate; 37-a third side panel; 38-unlocking the shaft; 39-a second unlocking block; 40-a third unlocking block; 41-green identification; 42-red marking; 43-a first torsion spring; 44-a second shaft; 45-a first bearing sleeve; 46-a third bearing; 47-a limit pin; 48-a second torsion spring; 49-a second stop; 50-a third stop; 51-a fourth stop; 52-fifth stop; 53-a pedestal bearing; 54-a second spacer; 55-a first safety block; 58-second safety block; 59-third insurance block; 60-bearing connecting bolts; 61-a first bearing; 62-a third axis; 63-a second bearing sleeve; 64-a second bearing; 65-third bearing.
Detailed Description
The above and further features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.
As shown in fig. 1, 2, 3 and 4, fig. 1 is a structural view of the locking feeding trolley; FIG. 2 is a structural view of the fixed frame; FIG. 3 is a structural view of the material placement frame; fig. 4 is an exploded view of the material placement rack.
The locking feeding trolley comprises a fixed frame 1 and a material placing frame 2, wherein the material placing frame 2 is horizontally arranged on the fixed frame 1 and is connected with the fixed frame 1 through a damping block 34.
The fixed frame 1 comprises an upper body frame and a lower body frame; top automobile body frame includes automobile body 5, handlebar 6, handlebar cover 7 and brake 8, below automobile body frame includes automobile body fixed plate 4 and casters 9, casters 9 sets up 4 below the automobile body fixed plate, automobile body 5 is fixed to be set up on the automobile body fixed plate 4, be provided with on the automobile body 5 handlebar 6, be provided with on the handlebar 6 handlebar cover 7 with brake 8, brake 8 pass through the driving line with material rack 2 is connected, and it is right to be used for the realization the mechanical locking of tray on the material rack 2.
The material placing frame 2 comprises a first bottom plate 12, a second bottom plate 16, a first side plate 13, a second side plate 21, a roller 28 and a fixed shaft 33; the first bottom plate 12 and the second bottom plate 16 are arranged in parallel and fixedly arranged at two ends of the first side plate 13, the second side plate 21 and the first side plate 13 are arranged in parallel and fixedly arranged on the first bottom plate 12 and the second bottom plate 16, the rollers 28 are arranged between the first side plate 13 and the second side plate 21, the rollers 28 can rotate around the axes of the rollers, and two ends of the fixed shaft 33 are fixedly arranged on the first side plate 13 and the second side plate 21.
First curb plate 13 top is provided with first strake 17 and first stopper 18 second curb plate 21 top is provided with second strake 20, strake 22, second stopper 19 and third strake 23, first stopper 18 sets up first strake 17 is close to the tip of handlebar 6, second stopper 19 sets up second strake 20 is close to the tip of handlebar 6, second stopper 19 with first stopper 18 symmetry sets up, strake 22 sets up second strake 20 with between the third strake 23, strake 22 with be provided with first locking Assembly between the second strake 20, strake 22 with be provided with second locking Assembly between the third strake 23, first locking Assembly with second locking Assembly passes through the transmission assembly transmission and connects.
First bottom plate 12 both sides all are provided with first dog 15, stop screw 26 and buffer 27, first dog 15 is fixed to be set up on first bottom plate 12, stop screw 26 with buffer 27 all sets up avoid on the first dog 15 the collision of material rack 2 tip and foreign object.
The first base plate 12 is provided with a control component, the control component comprises a hook 24, a stay wire fixing block 25 and a first shaft 30, the hook 24 is rotatably arranged on the first base plate 12 through the first shaft 30, the transmission line is connected with the hook 24 through the stay wire fixing block 25, and the hook 24 is arranged in contact with a first safety block 55 of the second locking component.
Be provided with first spacer 32 on the couple 24, the couple 24 passes through first spacer 32 with first insurance piece 55 top touches the setting, still be provided with guide block 14 on the first bottom plate 12 in order to realize right the guide effect of transmission line avoids the transmission line takes place to twine. A guard plate 11 is covered on the middle of the first bottom plate 12 to protect the control assembly.
The transmission assembly comprises a linear slide rail, a third side plate 37 and a first spring 31, the third side plate 37 is connected with the second side plate 21 in a sliding manner through the linear slide rail, the first spring 31 is arranged between the third side plate 37 and the second side plate 21, and two ends of the first spring 31 are respectively connected with the third side plate 37 and the second side plate 21 to provide elastic force, so that the third side plate 37 moves in a direction away from the handlebar 6.
The third side plate 3 is provided with a first unlocking block 35 and a third unlocking block 40, the first unlocking block 35 corresponds to the first locking component, and the third unlocking block 40 corresponds to the second locking component.
The third side plate 3 is far away from the fixed second unlocking block 39 that is provided with in the tip of handlebar 6, be provided with in the second unlocking block 39 and unlock axle 38 and second spring, just the second spring is right unlock axle 38 provides elasticity, makes the tip of unlocking axle 38 stretch out second unlocking block 39.
Preferably, a third limiting block 29 is arranged on the second side plate 21, a limiting groove is arranged on the third side plate 37, and the third limiting block 29 is arranged in the limiting groove, so that the relative movement position of the third side plate 37 and the second side plate 21 can be limited.
The unlocking shaft 38 is in contact with the loading and unloading equipment, so that the third side plate 37 is pushed to move towards the direction close to the handlebar 6 relative to the second side plate 21, and the unlocking of the first locking component is realized; the control component controls the second locking component to pull the third side plate 37 to move towards the direction far away from the handlebar 6 relative to the second side plate 21, and due to the elastic compression effect of the second spring on the unlocking shaft 38, the influence of the movement of the third side plate 37 on the loading and unloading equipment is avoided.
First locking subassembly includes first torsional spring 43, second shaft 44, first bearing housing 45, third bearing 46, locking piece and control block, first bearing housing 45 is fixed to be set up on the second curb plate 21, second shaft 44 passes through third bearing 46 rotates to set up in first bearing housing 45, just first torsional spring 43 both ends are connected respectively second shaft 44 with on the first bearing housing 45, the control block is fixed to be set up on the second shaft 44, the control block with first unlocking piece 35 contact sets up, the locking piece cover is established on the second shaft 44 just the locking piece with the control block passes through second torsional spring 48 and connects, the fixed spacer pin 47 that is provided with on the control block, spacer pin 47 with the locking piece contact sets up, through the spacing of spacer pin 4 and under the spring action of second torsional spring 48, guarantee the locking piece with the relative position of control block is stable. Meanwhile, through the structural arrangement of the second torsion spring 48, when the locking block performs the locking operation, the locking block is in elastic contact with the tray, so that the damage to the tray in the locking process is avoided.
The locking block comprises a fourth stop 51 and a fifth stop 52, and the fifth stop 52 is a flexible contact block arranged on the side of the fourth stop 51. The control block comprises a second stop 49 and a third stop 50, and the third stop 50 is a flexible contact block arranged at the bottom of the second stop 49. Typically, the control block is disposed above the lock block.
Preferably, a notch is formed in the second edge retaining strip 20 corresponding to the locking block, and in an unlocked state, the fourth edge retaining strip 51 is disposed in the notch to ensure that the tray passes through smoothly.
The second stopper 49 is provided with an arc-shaped surface, and the first unlocking block 35 is in contact with the arc-shaped surface, so that the first unlocking block 35 pushes the second stopper 49.
The second locking assembly comprises a bearing with a seat 53, a second spacer 54, a first safety block 55, a second safety block 58, a third safety block 59, a bearing connecting bolt 60, a third shaft 62 and a second bearing sleeve 63, wherein the bearing with a seat 53 and the second bearing sleeve 63 are all arranged on the third shaft 62, the lower end of the third shaft 62 is fixedly arranged on the first bottom plate 12 through the bearing with a seat 53, the third shaft 62 is fixedly arranged on the second side plate 21 through the second bearing sleeve 63, a third bearing 65 is arranged in the second bearing sleeve 63, the second safety block 58 is fixedly arranged at the upper end of the third shaft 62, a shifting piece is arranged on the second safety block 58 and is in contact with the third unlocking block 40, the first safety block 55 is fixedly arranged on the third shaft 62, and the second spacer 54 is sleeved on the third shaft 62 to fix the position of the first safety block 55 on the third shaft 62.
The second safety block 58 is provided with a third safety block 59 through a bearing connecting bolt 60, the third safety block 59 is shaped like a disc, the bearing connecting bolt 60 is provided with a first bearing 61 to enable the third safety block 59 to freely rotate around the bearing connecting bolt 60, and a second bearing 64 is arranged on the outer circular surface of the third safety block 59.
The protection cover 10 is covered above the second side plate 21 to protect the transmission assembly, generally, a display hole is formed in the protection cover 10, a position plate 36 is arranged on the third side plate 37 corresponding to the display hole, the position plate 36 is fixedly arranged on the third side plate 37, a green mark 41 and a red mark 42 are arranged on the position plate 36, and the green mark 41 or the red mark 42 is alternately displayed at the position of the display hole by sliding the third side plate 37 relative to the second side plate 21, so that the locking or unlocking state can be reminded.
As shown in fig. 5, fig. 5 is a view of a transmission structure of the material placing rack; the operation mode of the device is a pure manual mechanical structure without other pneumatic or electric devices. When the trolley moves to the feeding and discharging equipment, the barrier strip 22 and the third barrier strip 23 are fixed on the second side plate 21, the barrier strip 22 is used for guiding the carriers, and the carriers are located on the roller 28 to move. The hook 24 hooks the feeding and discharging device, the hook 24 is fixed with the stay wire fixing block 25, and the hook 24 and the stay wire fixing block rotate along the first shaft 30. On the other side, the limit screw 26 and the buffer 27 are fixed on the first block 15 and are fixed on the first bottom plate 12 at the same time. The part of equipment is used for buffering and positioning when the vehicle body contacts the loading and unloading equipment, and has no linkage relation with other equipment. The third stopper 29 is also fixed to the second side plate 21. The fixed shaft 33 is connected with the first and second side plates for fixing.
The unlocking shaft 38 contacts the loading and unloading device, pushes the second spring, unlocks the second unlocking block 39 and jointly pushes the first unlocking block 35. The first unlocking block 35 is fixed to the position plate 36 and also to the third side plate 37. The red mark 41 and the green mark 42 respectively display red and green to judge the unlocking state of the carrier by moving and shielding the position plate 36.
The first torsion spring 43, the second shaft 44, the first bearing sleeve 45, and the third bearing 46 are a combined rotation member, and are fixed to the second side plate 21. Above, the second stopper 49 is fixed to the rotating sleeve, the limit pin 47 and the second torsion spring 48 are fixed to the second stopper 49. The third stopper 50, the fourth stopper 51, and the fifth stopper 52 are fixed and connected to the rotation kit. When the trolley contacts the loading and unloading mechanism, the 38-42 series mechanisms push the first unlocking block 35 to move backwards, the third stop 50 rotates spatially to drive the remaining fourth and fifth stops to move synchronously, so that the rear part of the carrier is stopped from moving forwards, and the locking function is realized.
The belt bearing seat 53 is fixed on the first base plate 12, the second spacer 54, the first bearing 61, the third shaft 62, the second bearing sleeve 63, the second bearing 64 and the third bearing 65 are all fixed on the bearing seat 53 to form a rotating sleeve. The first safety block 55 and the second safety block 58 are fixed on the third shaft 62 for rotation. The third safety block 59 is disc-shaped and is connected and fixed to the second safety block 58 by the bearing connecting bolt 60 to move together with the second safety block.
The brake handle 8 is pulled, the hook 24 is pulled through a transmission line, the hook rotates to push the first safety block 55, the first safety block rotates along the third shaft to drive the second safety block 58 to rotate, so that the second bearing 64 is moved, the locking state of the tray is unlocked, and the tray can slide into a loading and unloading device. When the brake handle 8 is released, the process is reversed, the second bearing 64 returns to the initial position, and the tray is locked. And finishing the whole locking process.
The foregoing is merely a preferred embodiment of the invention, which is intended to be illustrative and not limiting. It will be appreciated by those skilled in the art that many variations, modifications, and equivalents may be made thereto without departing from the spirit and scope of the invention as defined in the claims.

Claims (8)

1. A locking feeding trolley is characterized by comprising a fixed frame and a material placing frame, wherein the material placing frame is horizontally arranged on the fixed frame and is connected with the fixed frame through a damping block; a handlebar is arranged on the fixed frame, and a brake handle is arranged on the handlebar;
the material placing rack comprises a first bottom plate, a second bottom plate, a first side plate, a second side plate and a roller; the first bottom plate and the second bottom plate are arranged in parallel and fixedly arranged at two ends of the first side plate, the second side plate and the first side plate are arranged in parallel and fixedly arranged, the first bottom plate and the second bottom plate are respectively arranged at two ends of the second side plate and the first side plate, a plurality of rollers are arranged between the first side plate and the second side plate, and the rollers can rotate around the axes of the rollers;
a first edge blocking strip is arranged above the first side plate, a second edge blocking strip, a blocking strip and a third edge blocking strip are arranged above the second side plate, the blocking strip is arranged between the second edge blocking strip and the third edge blocking strip, a first locking assembly is arranged between the blocking strip and the second edge blocking strip, a second locking assembly is arranged between the blocking strip and the third edge blocking strip, the first locking assembly and the second locking assembly are in transmission connection through a transmission assembly, and the second locking assembly is connected with the brake handle through a control assembly;
the first bottom plate is provided with a control assembly, the control assembly comprises a hook, a stay wire fixing block and a first shaft, the hook is rotatably arranged on the first bottom plate through the first shaft, the brake handle is connected with the stay wire fixing block through a transmission line, the stay wire fixing block is fixedly connected with the hook, the transmission line is connected with the hook through the stay wire fixing block, and the hook is arranged in contact with a first safety block of the second locking assembly;
the transmission assembly comprises a linear slide rail, a third side plate and a first spring, the third side plate is connected with the second side plate in a sliding mode, the first spring is arranged between the third side plate and the second side plate, the two ends of the first spring are connected with the third side plate and the second side plate respectively to provide elastic force, the third side plate is made to move towards the direction far away from the handlebar, a first unlocking block and a third unlocking block are arranged on the third side plate, the first unlocking block corresponds to the first locking assembly, and the third unlocking block corresponds to the second locking assembly.
2. A locking feed trolley as claimed in claim 1 wherein a first stop, a set screw and a bumper are provided on each side of the first base plate, the first stop is fixedly provided on the first base plate, and the set screw and the bumper are provided on the first stop.
3. A locking feeding trolley as claimed in claim 1, wherein a second unlocking block is fixedly disposed at an end of the third side plate away from the handle bar, an unlocking shaft and a second spring are disposed in the second unlocking block, and the second spring provides an elastic force to the unlocking shaft, so that the end of the unlocking shaft extends out of the second unlocking block.
4. A locking feeding trolley as claimed in claim 3, wherein a third limiting block is disposed on the second side plate, a limiting groove is disposed on the third side plate, and the third limiting block is disposed in the limiting groove.
5. A locking feeding trolley as recited in claim 1, wherein the first locking assembly includes a first torsion spring, a second shaft, a first bearing sleeve, a third bearing, a locking block and a control block, the first bearing sleeve is fixedly disposed on the second side plate, the second shaft is rotatably disposed in the first bearing sleeve through the third bearing, two ends of the first torsion spring are respectively connected to the second shaft and the first bearing sleeve, the control block is fixedly disposed on the second shaft, the control block is in contact with the first unlocking block, the locking block is sleeved on the second shaft, the locking block is connected to the control block through the second torsion spring, a limit pin is fixedly disposed on the control block, and the limit pin is in contact with the locking block.
6. A locking feeding trolley as claimed in claim 5, wherein the second locking assembly comprises a bearing with a seat, a second spacer, the first safety block, a second safety block, a third safety block, a bearing connecting bolt, a third shaft and a second bearing sleeve, the bearing with the seat and the second bearing sleeve are both arranged on the third shaft, the lower end of the third shaft is fixedly arranged on the first bottom plate through the bearing with the seat, the third shaft is fixedly arranged on the second side plate through the second bearing sleeve, a third bearing is arranged in the second bearing sleeve, the second safety block is fixedly arranged at the upper end of the third shaft, a shifting piece is arranged on the second safety block, the shifting piece is in contact with the third unlocking block, and the first safety block is fixedly arranged on the third shaft.
7. A locking feeding trolley as claimed in claim 6, wherein the second safety block is provided with a third safety block through a bearing connecting bolt, the third safety block is shaped like a disk, the bearing connecting bolt is provided with a first bearing to enable the third safety block to rotate freely around the bearing connecting bolt, and the outer circular surface of the third safety block is provided with a second bearing.
8. A locking feeding trolley as claimed in claim 7, wherein a protective cover is provided on the second side plate, a display hole is provided on the protective cover, a position plate is provided on the third side plate corresponding to the display hole, the position plate is fixedly provided on the third side plate, and a green mark and a red mark are provided on the position plate.
CN202111636224.8A 2021-12-27 2021-12-27 Locking pay-off dolly Active CN114084208B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111636224.8A CN114084208B (en) 2021-12-27 2021-12-27 Locking pay-off dolly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111636224.8A CN114084208B (en) 2021-12-27 2021-12-27 Locking pay-off dolly

Publications (2)

Publication Number Publication Date
CN114084208A CN114084208A (en) 2022-02-25
CN114084208B true CN114084208B (en) 2022-12-16

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