SU906924A2

SU906924A2 - Rolled-under jack

Info

Publication number: SU906924A2
Application number: SU802903342A
Authority: SU
Inventors: Василий Мефодьевич Базилевский; Петр Степанович Брызгалов; Владимир Николаевич Митрофанов
Original assignee: Предприятие П/Я Г-4802
Priority date: 1980-04-02
Filing date: 1980-04-02
Publication date: 1982-02-23

Description

Изобретение относится к грузоподъемным средствам,а более конкретно kJ подкатным домкратам.The invention relates to lifting means, and more specifically to kJ rolling jacks.

По основному авторскому свидетельству Ν’ 615035 известен подкатной домкрат, содержащий смонтированный на колесах корпус, тормозное устройство с тросовым механизмом натяжения и привод [1] .According to the main copyright certificate Ν ’615035, a rolling jack is known that contains a housing mounted on wheels, a brake device with a cable tension mechanism and a drive [1].

Однако известное устройство имеет недостатки, заключающиеся в том,что при выкатке груза вручную из летательного аппарата требуются большие усилия, идущие на преодоление усилия пружины механизма натяжения и удёр- ₁жания ее в сжатом положении,растормаживающих сил и значительного веса самого груза. Кроме того, при малейшем ослаблении тянущего троса под действием мощной пружины происходит мгновенное срабатывание механизма и несвоевременное торможение, что создает дополнительную трудность в смещении груза, а также в необходимости выравнивания при этом груза по горизонтали, так как тормозные тросы могут срабатывать неравномерно.However, the known device has disadvantages in that when rolling out the goods by hand from the aircraft required a lot of effort going on to overcome the mechanism of a tension spring force and udor- ₁ Jania it in the compressed position, disinhibitory forces and considerable weight of the cargo. In addition, with the slightest weakening of the pulling cable under the action of a powerful spring, the mechanism instantly responds and the braking is untimely, which creates additional difficulty in shifting the load, as well as in the necessity of horizontal alignment of the load, since the brake cables can act unevenly.

Целью изобретения является повышение надежности и удобства в эксплуатации подкатного домкрата.The aim of the invention is to increase the reliability and ease of operation of the rolling jack.

Поставленная цель достигается тем, что домкрат снабжен управляющим уст-¹ройством, жестко установленном на механизме натяжения и включающим в себя полый корпус с размещенными в его полости тросами тормозного устройства, подпружиненный полый поршень, рукоятку управления, выполненную в виде двуплечего рычага, шарнирно .закрепленного на полом корпусе, одним из своих плеч взаимодействующего с соответствующим упором механизма натяжения, а другим - с нажимным валиком, подвижно установленным в полом корпусе, а также подпружиненным стопором, установленным в корпусе и фиксирующим поршень относитель’ но него.This goal is achieved by the fact that the jack is equipped with a control device ¹ , rigidly mounted on the tension mechanism and including a hollow body with brake cables placed in its cavity, a spring-loaded hollow piston, a control handle made in the form of a two-shouldered lever, pivotally fixed. on a hollow body, one of its shoulders interacting with the appropriate focus of the tension mechanism, and the other with a pressure roller movably mounted in the hollow body, as well as a spring-loaded stopper, tanovlenii in the housing and the locking piston with respect to 'but it.

На фиг. 1 представлен домкрат,общий вид; на фиг. 2 - вид А на фиг.1; на фиг. 3 вид Б на фиг. 2; на фиг. 4 - узел 1 на фиг. 1; на фиг.5 ~ сечение В-В на фиг. 4.In FIG. 1 shows a jack, a general view; in FIG. 2 is a view A in FIG. 1; in FIG. 3 view B in FIG. 2; in FIG. 4 - node 1 in FIG. 1; Fig. 5 ~ section BB in fig. 4.

Домкрат содержит корпус 1, установленный на колесах 2. К нижней части корпуса крепится основание 3 с помощью пальца 4,на котором шарнирно закреплена скоба 5 (фиг. 2 и 3) на осях 6. В пазах скобы установлена ось 7, на которой закреплены колодки 8.The jack comprises a housing 1 mounted on wheels 2. A base 3 is attached to the lower part of the housing with a finger 4, on which a bracket 5 (Fig. 2 and 3) is pivotally mounted on the axles 6. An axis 7 is mounted in the grooves of the bracket on which the pads are fixed 8.

Скоба 5 удерживается в приподнятом положении фиксатором 9 (фиг. 2), который шарнирно, с помощью оси 10, прикреплен к основанию 3 и фиксируется в двух положениях шариком 11 и пружиной 12. Колодка прижимается к колесу домкрата с помощью пружины 13. В пазу фиксатора 9 крепятся тросы 14, а гибкая оболочка троса подсоединена к накладке 15, прикрепленной к основанию 3.The bracket 5 is held in a raised position by the latch 9 (Fig. 2), which is pivotally attached to the base 3 with the help of the axis 10 and fixed in two positions by the ball 11 and the spring 12. The pad is pressed against the wheel of the jack using the spring 13. In the groove of the latch 9, the cables 14 are attached, and the flexible sheath of the cable is connected to the pad 15 attached to the base 3.

Регулировка длин гибкой оболочки троса 14 обеспечивается резьбовой втулкой 16 с наконечниками 17 и контргайками 18. Механизм управления содержит поршень 19, установленный в охватывающей его втулке 20.The adjustment of the length of the flexible sheath of the cable 14 is provided by a threaded sleeve 16 with lugs 17 and locknuts 18. The control mechanism comprises a piston 19 installed in the sleeve 20 enclosing it.

К втулке 20 с двух сторон прикреплены с помощью винтов 21 крышки 22 и 23 и ручка 24. Поршень 19 подболта 42. На штанге 37 имеются две регулировочные гайки 43.The covers 20 and two and the handle 24 are fastened to the sleeve 20 on both sides with screws 21. The piston 19 of the bolt 42. There are two adjusting nuts 43 on the rod 37.

К штанге 37 и к втулке 38 закреплены захватные элементы 44 и 45.Grip elements 44 and 45 are fixed to the rod 37 and to the sleeve 38.

Домкрат работает следующим образом.The jack works as follows.

При перемещении груза по наклонной плоскости колодки 8 находятся в зафиксированном положении и могут 10 осуществлять торможение в ручном и автоматическом режиме путем воздействия рукоятки 32 и валик 30.When moving the goods on an inclined plane, the pads 8 are in a fixed position and can 10 perform braking in manual and automatic mode by the action of the handle 32 and the roller 30.

В случае обрыва тягового троса поводок 41 под действием пружины 15 39 перемещается, и через упор 33 происходит воздействие рукоятки 32 на валик 30. Валик отжимает подпружиненный стопор 28, и поршень 19 под действием пружины 25 перемещает20 ся, увлекая за собой тросы 14, в результате чего происходит перемещение фиксатора 9, освобождение^-колодок и торможение груза.In the event of a breakage of the traction cable, the leash 41 moves under the action of the spring 15 39, and the handle 32 acts on the roller 30 through the stop 33. The roller pushes the spring-loaded stopper 28, and the piston 19 moves under the action of the spring 25, entraining the cables 14, resulting in which displacement occurs retainer 9, the release ^- pad and braking load.

Торможение в ручном режиме может 25 осуществляться как с закрепленным ме ханизмом управления, так и дистанционно, путем поджатия оператором руко ятки 32 в ручке 24.Manual braking can 25 be carried out both with a fixed control mechanism, and remotely, by pressing the handle 32 on the handle 24 by the operator.

Таким образом, изобретение повыша 30 ет надежность и удобство в эксплуата ции устройства.Thus, the invention improves the reliability and usability of the device.

Claims

This invention relates to lifting equipment, and more specifically to K rolling jacks. The main copyright certificate No. 615035 is known for a rolling jack containing a housing mounted on wheels, a braking device with a cable tension mechanism, and a drive 1. However, the known device has drawbacks in that when manually loading cargo out of the aircraft, large forces are required to overcome the force of the spring of the tension mechanism and hold it in the compressed position, release forces and a significant weight of the load itself. In addition, with the slightest loosening of the pulling cable under the action of a powerful spring, the mechanism instantly triggers and untimely braking, which creates an additional difficulty in displacing the load, as well as the need to level out the load horizontally, since the brake cables can operate unevenly. The aim of the invention is to improve the reliability and ease of use of the rolling jack. The goal is achieved by the fact that the jack is equipped with a control device rigidly mounted on the tensioning mechanism and including a hollow body with braking device cables placed in its cavity, a spring-loaded hollow piston, a two-arm lever with a control arm mounted on a hollow case, one of its shoulders interacting with a corresponding emphasis of the tensioning mechanism, and the other with a pressure roller, which is movably mounted in the hollow case, and also spring-loaded stop Mounted in the housing and the locking piston with respect to it. 39 In FIG. 1 shows the jack, its view; in fig. 2 is a view A of FIG. I in FIG. 3 is a view B in FIG. 2; in fig. 4 — node 1 in FIG. one; in FIG. 5, section B-B in FIG. 4. The jack includes a housing 1 mounted on wheels

2. The base 3 is fastened to the lower part of the body with the power of a finger 4, on which a bracket 5 (Fig. 2 and 3) is pivotally fixed on axles 6. In the slots of the bracket there is an axis 7 on which the pads are fixed 8. The bracket 5 is held in the raised position, the latch 9 (Fig. 2) which is hinged, using the axis 10, is attached to the base 3 and fixed in two positions with the ball 11 and the spring 12. The pad is pressed to the jack wheel with the spring 13. In the slot of the latch 9 the fastenings of the trusses 14, and the flexible sheath of the cable is connected to the plate 15 attached to the base

3. Adjustment of the lengths of the flexible sheath of the cable 14 is provided by a threaded sleeve 16 with tips 17 and lock nuts 18. The control mechanism includes a piston 19 mounted in the sleeve 20 surrounding it. To the sleeve 20 are attached on both sides with screws 21 covers 22 and 23 and a handle 24. The piston 19 is spring-loaded relative to the housing of the sleeve 20 by a spring 25. With the piston 19, two cables 14 are coupled with crackers 26, which are spring-loaded relative to the piston by springs 27. 8 The recess 28 is mounted to the groove of the cover 23, spring-loaded relative to the covers 29. The stopper beats rzhivaet spring-loaded piston 19 in position. In the bore of the sleeve 20 and the handle 24, a roller 30 is installed. A handle 32 is attached to the handle 24 on the axle 31, on which the stop 33 is mounted on the axis 34, spring-loaded relative to the handle by the spring 35. The control mechanism is attached to the tension mechanism with a clamp 36 The tensioning mechanism comprises a rod 37 mounted in the female bushing 38 with the possibility of an axial displacement. The rod 37 is spring-loaded relative to the sleeve 38 by a spring 39 supported in the cover 40. A leash 41 is attached to the rod 37 by means of. 4 bolts 42. On the rod 37 there are two nuts 43. adjusting To the rod 37 and to the sleeve 38, the gripping elements 44 and 45 are fixed. The jack works as follows. When the load moves along an inclined plane, the pads 8 are in a fixed position and can be braked in manual and automatic mode by acting on the handle 32 and the roller 30. In the event of a broken cable, the leash 41 is moved by the action of the spring 39, and through the stop 33 The handle 32 acts on the roller 30. The roller presses the spring-loaded stopper 28, and the piston 19 is moved by the action of the spring 25, dragging the cables 14, resulting in movement of the lock 9, releasing the dryers and braking ruza Manual braking can be carried out either with a fixed control mechanism or remotely, by pressing the handle 32 in the handle 24 by the operator. Thus, the invention improves the reliability and usability of the device. Claims of invention Rolling jack according to author St. No. 615035, in order to improve reliability and ease of operation, it is equipped with a control device rigidly mounted on the tension mechanism and including a hollow body with brake cables placed in its cavity, a spring-loaded hollow piston, a control handle, made in the form of a two-armed lever, hinged on the hollow case, one of its shoulders interacting with the corresponding emphasis of the tension mechanism, and the other with a pressure roller, which is movably mounted in the floor orpuse, and a spring-loaded detent mounted in the housing and the locking piston relative thereto. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 615035, cl. In 66 F 5/02, 1976.

, with

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FIG. 2