UA12340U - Manual cart-stacker - Google Patents

Abstract

Manual cart-stacker has a four-wheeled frame, two wheels of which are full-turn, a carriage with lifting forks, a ratchet winch for lifting the carriage, moreover, the winch for lifting the carriage of this manual of cart-stacker is additionally equipped with an element of adjustment of the effort on the handle - by friction ball variator, driving disk of which is mounted with possibility of free rotation on the axle of drum and is rigidly connected with driving handle, and its driven disk is rigidly mounted on the shaft of disk clutch. At the ends of the arms of the spring-loaded rotating lever are located the element of direct reaction to weakening of rope and element for blocking of driving handle from further unwinding of rope during its weakening. Four-wheeled frame, opening of which for overcoming the obstacles above the rolling surface is greater than 40 mm, it has reinforced upper and lower flanges of the beams of lower part of four-wheeled frame.

Description

Description of the invention

The utility model refers to manual stacker carts, which are used for 2 loading and unloading operations and stacking of goods in pallets, in particular, indoors and outdoors.

Known author's certificate of the USSR Mob44654 "Handcart", IPC B6283/04, publ. 01/30/1979, Bull. Mo4, author

Budryanovych V.I. This hand truck has a four-wheel frame, a carriage with lifting forks, a hand winch, which is equipped with a force reduction element on the drive handle. The design features of the hand truck do not ensure the lifting or lowering of the load at different speeds depending on the weight of the load at 70 constant effort on the drive handle of the winch.

The well-known stacker cart, LESI EK Ipto-RiIshv catalog, p. 92, 93, catalog 931, January 1993.

This stacker trolley has a four-wheel frame, two of which are fully swiveling, a carriage with lifting forks, a manual carriage lifting winch with a force reduction element on the drive handle, and the four-wheel frame has a clearance to overcome obstacles above the rolling surface of up to 40mm while maintaining the height of the bottom 75 the position of the forks is not more than VOmm. This stacker trolley does not have the ability to raise or lower the load at different speeds, depending on the weight of the load being lifted, with constant effort on the drive handle of the winch. In addition, this device does not block the lowering of the load when the carriage is stopped, if the lifting forks meet an obstacle or fall on the frame during downward movement. This leads to the loosening of the rope on the drum and its unwinding. This stacker cart cannot overcome obstacles higher than 40 mm while maintaining the height of the lower position of the forks no more than 800 mm, which limits their use outside of production premises and sales halls.

The purpose of the useful model "Manual stacker trolley" is to equip the carriage lifting winch with an additional force adjustment element on the handle - a friction ball variator, as well as a rope slack response device with a rope slack response element | with an element of blocking the drive handle from further unwinding of the rope when it is loosened, which are installed at the ends of the shoulders of the spring-loaded rotary lever, in addition, the four-wheeled frame, which has a clearance above the rolling surface for overcoming obstacles of more than 40 mm, has reinforced upper and lower belts of the beams of the lower part of the four-wheeled frame, - to ensure a reduction in the force on the drive handle when lifting the load and an increase in productivity due to the possibility of changing the speed of lifting the carriage when placing loads of different weights on the axle at a constant speed of rotation of the drive handle, as well as blocking the lowering of "Its carriage when meeting an obstacle , which prevents the unwinding of the rope on the drum, in addition to ensure the expansion of the use of the device outside production premises and sales halls. at

The essence of a useful model. The following is known. This device has a four-wheeled frame, two wheels of which are fully swiveling, a carriage with lifting forks, a manual carriage lifting winch with a force reduction element on the 3 o drive handle, and the four-wheeled frame has clearance to overcome obstacles above the rolling surface up to 40mm - while maintaining height the lower position of the forks is no more than in Ohms. The following is new. The manual winch for lifting the carriage is additionally equipped with an element for adjusting the force on the drive handle - a friction ball variator, the drive disk of which is installed with the possibility of free rotation on the axis of the drum and is rigidly "connected to the drive handle, and its drive disk is rigidly mounted on the shaft of the disc clutch, and also With 70 a rope slack response device with a rope slack immediate response element c and a drive handle blocking element against further slack rope, which are mounted on the ends c" of the arms of the spring-loaded rotary lever, and a four-wheeled frame having a clearance for overcoming obstacles above with a rolling surface of more than 40 mm, has reinforced upper and lower belts of the beams of the lower part of the four-wheeled frame. The following is known. Friction ball variator, which has leading and driven disks, a bracket with balls

IF. Jones, H.L. Horton, "Mechanisms of automatic action", Moscow, 1961, pp. 604 - 605). - The support roller is an element that directly reacts to the slackening of the rope. ka The element of blocking the drive handle from further loosening of the rope is a dog.

Technical result. Equipping the manual winch for lifting the carriage of a manual stacker cart with a friction ball variator allows you to smoothly change the speed of the carriage with and without weight, or when placing a "carriage" of 20 loads of different weights, with a constant speed of rotation of the drive handle and a constant force applied to it, which increases the performance of the device. Equipping the manual stacker trolley with a device for responding to the loosening of the rope, with an element of direct response to the loosening of the rope and with an element of blocking the drive handle from further unwinding of the rope when it is weakened, which are installed at the ends of the shoulders of the spring-loaded rotary lever, ensures the blocking of the lowering of the carriage when it meets with 25 barrier that prevents unwinding of the rope on the drum. Increasing the clearance of the frame to overcome obstacles above the rolling surface of more than 40 mm provides an increase in the passability of the manual stacker cart both in the production premises and outside them, which is achieved by strengthening the upper and lower belts of the beams of the lower part of the frame while preserving its dimensions. All this gives new consumer properties to the manual stacker cart and expands the range of these devices. 60 The useful model is illustrated by the following drawings: Fig. 1 - general view, side view; Fig. 2 - view A; Fig. 3 - section along B-B; Fig. 4 - section along B-B.

The device of fig. 1-4 consists of a frame po3z.1, which has four wheels poz.2, and the rear wheels are full-rotating. This frame of Fig. 1 has a clearance above the rolling surface to overcome obstacles of more than 40 mm, and in the lower part of Fig. 3 of its beams, pos. 3, there are reinforced upper pos. 4 and lower pos. 5 belts. In the guides pos. b6 of the frame of fig. 1, a carriage pos. 7 with lifting forks pos. 8 is installed, the height of the lower position of which is no more than

8 Ohm. The carriage has the ability to move in the guides with a manual winch pos. 9 with the help of a rope according to 3.10, one end of which is fixed on the frame from above and thrown over the bypass block pos. 11 of the carriage and the bypass block pos. 12, which is located on the frame from above, and the other end the rope of Fig. 4 is fixed (not shown) on the drum pos. 13, which is installed on the axis of pos. 14 with the possibility of free rotation. On the drum, in turn, a toothed wheel pos. 15 is rigidly fixed, which is constantly engaged with the gear pos. 16 of the pressure disc pos. 17 of the disc clutch pos. 8. The pressure disc of the disc clutch is connected to the shaft pos. 19 using a thread and has the possibility of reciprocating movement along the axis of the shaft to the stop pos. 20, while the disk clutch is open. The support disc pos.21 of the disc clutch is rigidly connected to the shaft, and the middle disc pos.22 of the disc clutch 70 can rotate freely on this shaft. The support and middle discs of the disc clutch have a ratchet crown, and a spring-loaded dog (not shown) constantly interacts with the ratchet crown of the middle disc. Friction discs item 3.23 are installed between the support, middle and pressure discs.

The drive disk pos. 24 of the friction ball variator pos. 25 is fixed on the axis of the drum with the possibility of 7/5 Free rotation, and the drive handle pos. 26 is rigidly fixed to it. The driven disc pos. 27 of the friction ball variator is rigidly fixed on the shaft. Between the leading and the known discs of the friction ball variator there is a clip po3z.28 with balls pos.29, which are in contact with these discs. The clip has the possibility of reciprocating movement using the control handle pos. 30. The clip with balls has a fig. 2 arrow pos. 31, which with the help of a scale pos. 32 indicates which load the manual winch for lifting 2o carriage is set to. The pressure between the discs is provided by the springs in Fig. 4, item 33 and is regulated by the nut item 34. The support roller pos. 35, which is fixed at the end of one arm of the spring-loaded rotary lever pos. 3z. 3b, which is mounted on the axis of pos. 3z. 37, is constantly in contact with the rope in fig. with the ratchet crown of the support disc of the disc clutch.

For the convenience of moving the manual stacker cart, its frame has handrails item 39.

The device works as follows Fig. 1-4. Lifting forks pos. 8 of the carriage pos. 7 in the lower initial position are lowered onto the beams pos. 3 of the frame pos. 1. With the help of handrails pos. 39, the manual cart - stacker t is moved to the pallet with cargo pos. 40 and the lifting forks pos. 8 are inserted into the standard pockets of the pallet (not shown). At the same time, the arrangement of the structural elements of the manual winch pos. 9 is as follows: the gear pos. 16 of the pressure disc pos. 17 of the disc clutch pos. 18 is moved to the stop pos. 20 and can transmit the rotating o z The moment for unwinding the rope pos. 10, - disc clutch open At the same time, its middle disc pos.22 is fixed by a dog (not shown), the support disc po3z.21 is fixed by a dog pos.38, i.e. the rope is weakened, the transmission of the torque to the unwinding of the rope is impossible. co

Using the control handle pos. 3O, the arrow pos. 31 is set to the appropriate division of the scale pos. 32, which corresponds to the weight of the cargo, while the clip pos. 28 with balls pos. 3z-29 of the friction ball variator with pos. 25 moves to the appropriate position together with the arrow . The drive handle is turned up by 3.26 and - where the carriage with the load is raised to the height necessary for transportation. At the same time, the torque on the drive handle is transmitted through the driving disc pos. 24, the clip with balls, the driven disc pos. 27 to the shaft pos. 19, the gear of the pressure disc moves along the axis of the shaft from the stop and closes the disc clutch and transmits the torque to the winding of the rope on the drum pos. 13, the rope is stretched and acts on the support roller pos. 35, "the spring-loaded rotary lever pos. 36 turns on the axis of pos. 37 and the dog pos. 38 comes out of engagement with pt") with the ratchet crown of the support disk. At the lifting height of the carriage, necessary for transportation, it is stopped. rotation to the rise of the drive handle, while the middle disc of the disc clutch is fixed by a dog and does not allow the shaft to rotate in the opposite direction, i.e. the carriage with the load is fixed at the transportation height. With the help of handrails, the manual stacker cart with the load is moved to the stacking place, raised to the stacking height. The cargo is lowered to the stacking place, at the same time, the drive handle is turned to lower. Torque on the drive handle Through the drive disc, the clip with balls, the driven disc is transmitted to the shaft, the gear of the pressure disc relieves the pressure on the friction discs and transmits the torque to unwind the rope from the drum, - the disc clutch is closed. After placing the load on the stacking place, the rotation is stopped by lowering the drive handle, the lifting forks are removed from the pallet. With the help of the control handle, the arrow is set to the appropriate division on the scale, which corresponds to the idle movement of the carriage, that is, without a load. Continue lowering the carriage with the lifting forks to the lower starting position until the lifting forks are lowered onto the frame beams. At the same time, the rope loosens and the spring-loaded rotary lever pos.3b6 turns on the axis po3z.37 and the dog pos.38 engages with the ratchet crown of the support disk and fixes it. The transmission of the torque through the gear of the pressure disc of the disc clutch is stopped, further unwinding of the rope is stopped. The same thing happens when there is an obstacle to lowering the carriage with or without a load.

Claims (3)

The formula of the invention 1. A manual stacker cart, which has a four-wheeled frame, two wheels of which are fully rotatable, a carriage with lifting forks, a manual winch for lifting the carriage with a force reduction element on the drive handle, and the four-wheeled frame has a clearance to overcome obstacles above the rolling surface up to 40 mm, at maintaining the height of the lower position of the forks no more than 80 mm, which is distinguished by the fact that the manual winch for lifting the carriage 65 is additionally equipped with an element for adjusting the force on the drive handle - a friction ball variator, the drive disk of which is installed with the possibility of free rotation on the axis of the drum and is rigidly connected with a drive handle, and its driven disk is rigidly mounted on the shaft of the disk clutch, as well as a rope slack response device with an element of direct response to the slack of the rope and with an element of blocking the drive handle against further slackening of the rope, which are installed at the ends of the shoulders of the spring-loaded rotary lever, and four-wheeled frame, clearance as to overcome obstacles above the rolling surface of more than 40 mm, has reinforced upper and lower belts of the beams of the lower part of the four-wheeled frame. 2. The manual stacking cart according to claim 1, which is characterized by the fact that the element of direct response to the loosening of the rope is a support roller. 70 3. Manual stacker cart according to claim 1, which differs in that the locking element of the drive handle against further loosening of the rope is a dog. that 2 "c) " (ze) s yo - and? - name) (95) sh» (42) 60 b5