RU2399578C1 - Automotive hydraulic jack - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to load handling equipment and serves to transfer cargoes and people on work platforms from one level onto another. Proposed jack comprises chassis on front and rear wheels, telescopic boom mounted on lift and turn frame of load bearing base arranged on the chassis between front and rear wheels. Boom, whereto suspended is work box-like platform, is coupled with lift and turn frame by lift hydraulic cylinder to rest on thrust arranged at the front of aforesaid bearing base in transport position. Said transformable platform consists of two sections. Lower section has bottom and sidewalls. Upper section has sidewalls. Note here that said sections are jointed together by side struts 44 with hinge mechanism 35 and retainers 40 to allow upper section to turn through 180° and be folded below lower section.

EFFECT: reduced sizes in transport position.

7 cl, 6 dwg

Description

The invention relates to hoisting-and-transport mechanisms, namely to automobile hydraulic lifts, and is used to move people and goods on work platforms from one level to another.

Known lifting device containing a self-propelled chassis, the drive of which provides its movement in the front and rear directions. A rotary platform is mounted on the chassis, horizontally rotated 180 ° between the front and rear positions. A sliding boom mounted on a turntable can rotate horizontally relative to the chassis. The boom faces the front and rear ends of the chassis when moving between the front and rear positions. A working platform for the operator is mounted on the free end of the boom. On the tower there is a device control mechanism that the operator acts on (see US Pat. No. 5107955, IPC B66F 11/04, publ. 04/28/1992).

A device is known for lifting a working platform (cradle) mounted on a vehicle and containing a base, in the center of which a supporting platform is mounted, driven in rotation around the supporting axis in two directions by means of a drive gear, which is in constant engagement with the ring gear located inside the supporting platform, and equipped with two vertical brackets, to which the first pair of levers is attached, forming the first of the four mast sections for lifting the working platform mounted on the top Onze fourth mast sections, wherein the device is arranged vertically oriented jacking device to maintain a raised mast, wherein the foundation comprises a steel box frame X-shaped, with each arm of the X-shaped frame are telescopic. The second mast section contains a box lever and a stretch, which consists of two rectangular sections of different lengths and widths. The third mast section contains a box lever, one end of which is pivotally attached to the support element, and the other is connected to the fourth mast section by means of an additional support element (see RF patent No. 2038286, IPC B66F 11/04, published on June 27, 1995).

A well-known car lift containing a telescopic boom mounted on a vehicle platform with the ability to rotate from an inclined transport position to a vertical work platform, articulated from the main boom section, and a device for securing boom sections (see Ulanov R.N., Scherbakov V. D. Car lifts and forklifts, M., "Higher School", 1977, p.17-18).

Known hydraulic automobile lift containing a handle with a telescopic boom mounted on a rotary column of the support frame with the possibility of transfer from the transport folded position to the working unfolded, the handle pivotally articulated with the base of the boom having a retractable section, a working platform suspended from the boom, which is equipped with a sensor its position relative to the horizon and its orientation system with an actuator, outriggers and a pump for supplying the working fluid to the hydraulic system under puller (UK patent GB1358850, IPC B66F 11/04, publ. 07/03/1974).

A well-known car lift containing a chassis on the running front and rear wheels, a working platform (cradle) mounted on an arm, a telescopic boom with a head mounted on a frame of a rotary base, connected to it by a lifting cylinder and resting in a transport position on the landing gear, while the rotary the base is placed on a support base mounted on the chassis and containing retractable front and rear supports, retractable front supports are located at an angle of 75-80 ° relative to the longitudinal and transverse axis Car lifts. The swivel base is placed on the chassis between the front and rear wheels, and the bracket of the working platform (cradle) located on the rear side is pivotally connected to the swivel bracket coaxially located relative to each other, with the telescopic boom head and the swivel bracket pivotally connected to each other by the ends of the levers with the formation of a parallelogram mechanism having a hydraulic cylinder for its movement (utility model patent No. 14208, IPC B66F 11/04, publ. 10.07.2000).

Known hydraulic car lift containing a handle with a telescopic boom mounted on a rotary column of the support frame with the possibility of transfer from a transport folded position to a working unfolded, and the handle is articulated with the base of the boom having a retractable section, a cradle suspended from the boom, which is equipped with a position sensor its relative to the horizon and its orientation system with an actuator, outriggers and a pump for supplying the working fluid to the hydraulic system emnika. The boom is equipped with a second pull-out section, to the head of which a limit switch is attached for signaling the cradle fastening, made removable, the cradle is equipped with a signaling device that detaches it from the ground and is installed on its lower part and has a load limit force limiter in the cradle located in its lower part . The sensor is mounted on a structure consisting of upper and lower bases and links forming a hinged parallelogram for transferring load to this sensor, and connected to a V-shaped bracket pivotally attached to the fork of the working platform (cradle) connected to the head of the second sliding section. The first retractable section is equipped with a limit switch to limit the cradle's lifting height, end supports for signaling the installation of supports are installed on the outriggers, and a second hydraulic pump is installed on the vehicle, which serves to supply working fluid to the cradle's orientation system, the lift is equipped with detachable connections of electrical and hydraulic equipment to disconnect the working platforms (cradles) in the operating mode of the elevator as a manipulator and attachment to the head of the second pull-out section in this mode of the hook suspension and ogre the limiter with the load in the aforementioned mode, which is mounted on a rotary column and has a pressure sensor that works when the load is exceeded when lifting the load. The invention provides increased ease of use of the elevator by ensuring its use in the mode of a crane, and the elevator mode, and also provides increased security (RF patent No. 2199484, IPC B66F 11/04, publ. 02.27.2003).

Known hydraulic telescopic lift, the closest in technical essence to the claimed and adopted for the prototype, containing an arrow made of telescopically connected to each other a fixed outer, movable middle and inner sections, and the outer section is pivotally connected to the boom lifting cylinder and a rotary stand mounted on the base mounted on the chassis frame of the car, and the inner section is pivotally connected by the free end to the working platform, the hydraulic cylinder moves the middle section and moving the actuator and the inner section. The drive movement of the inner section is made in the form of a hydraulic cylinder mounted in the inner cavity of the sections parallel to the specified hydraulic cylinder for moving the middle section, and pivotally connected by a rod to the inner section. Each of the hydraulic cylinders for moving sections is pivotally mounted on axes fixed to the middle section, the hydraulic cylinder for moving the middle section with a rod pivotally connected to the outer section, and the piston cavities of the hydraulic cylinders for moving sections are connected by a pipe that is equipped with a matching valve (RF patent No. 2108280, IPC B66F 11 / 04, publ. 04/10/1998). The known device has large dimensions in the transport position, due to the high platform located above the cab, in addition, the device is not stable enough and unsafe during maintenance.

The technical result, which the invention is aimed at, is to improve operational performance by reducing the dimensions of the device in the transport position, increasing its stability and reliability.

The technical result is achieved by the fact that the hydraulic car lift contains a chassis on the running front and rear wheels, a telescopic boom is installed on the lifting and swinging frame of the support base located on the chassis between the running front and rear wheels, with the possibility of moving from the transport folded position to the working one - unfolded, on which the working platform is suspended, in the transport position located above the car cabin, made in the form of a box, while the telescopic boom with It is dined with a lifting and swinging frame with a lifting hydraulic cylinder and rests in a transport position on a rack located in front of the supporting base, and the supporting base contains sliding front and rear supports, the working platform is transformable and consists of two sections, of which the lower has a bottom and side walls, and the upper side walls, sections are interconnected by means of side racks with a hinged mechanism equipped with clamps, with the possibility of turning the upper section 180 ° and folding it under the bottom her section.

Insulators are installed under the lower section of the working platform, and the surface of the railings of its upper section is lined with low-heat-conducting material.

A control panel is installed on the fence of the upper section of the working platform and there are mounting points for the carabiners of the working safety belts.

In the mounting unit of the working platform and boom, a limit load limiter is installed.

The working platform is equipped with a position sensor relative to the horizon and its orientation system with an actuator.

The invention is illustrated by drawings, where:

Figure 1 - General view of the lift hydraulic TA-22 in the transport position; figure 2 is a General view of the lift in operating position; figure 3 - working platform in transport position; figure 4 - working platform in the working position; 5 is a view of the landing opening of the working platform; 6 is a cross section of a telescopic boom.

Here: 1 - chassis; 2 - supporting base; 3 - lifting and swiveling frame; 4 - telescopic arrow; 5 - working platform; 6 - front outriggers; 7 - rear outriggers; 8 - flooring; 9 - clamps of supports; 10 - a superstructure on which the rotary support 11 is mounted with a hydraulic motor 12; 13 - fencing base support 2; 14 - cargo compartment of the middle part of the base of the support 2 with hinged sides; 15 - compartment electrical equipment on the starboard side under the deck 8 in the rear of the base support 2; 16 - remote control, in the transport position is located inside the compartment of electrical equipment 15; 17 - stand supporting telescopic boom 4, located in front of the base of the support 2; 18 - node fixing the boom in the transport position; 19 - a tank of a hydraulic system; 20 - wheel chocks; 21 - a rear beam installed in the rear of the base of the support 2; 22 - hydraulic cylinder tracking platform working 5; 23 - bracket for mounting the hydraulic cylinder 24 lifting the boom 4; 25 - an arm of an arrow 4; 26 - a casing covering the hydraulic system of the lifting-rotary frame 3; 27, 28, 29, 30 - sections of the boom 4 (figure 1); 31, 32 - respectively, the upper and lower duct sections of the boom (Fig.6); 33 - telescoping hydraulic cylinder (figure 1); 34 - hydraulic cylinder orientation of the working platform 5; 35 - articulated mechanism of the working platform 5 (Fig.3, 4); 36 - fencing platform 5; 37 - lining of the railing of the platform 5; 38 - limit load limiter; 39 - insulators; 40 clips 41 - control panel; 42 - fastening carbines safety belts workers (Fig.3, 4); 43 - the fence of the landing opening of the working platform 5 (figure 5); 44 - side racks of the upper and lower sections of the working platform with a swivel mechanism 35 (Fig.3, 4); 45 - bracket mounting the working platform 5 to the head of the upper section 30 of the telescoping boom 4.

Hydraulic car lift TA-22 with an electrically insulated working platform with a lifting capacity of 200 kg and a working field with a height of 22 m and a reach of 8 m is designed to lift people with tools and materials to heights when performing electrical, construction, operational and other types of work.

The hydraulic car lift contains a chassis 1 on the running front and rear wheels, a telescopic boom 4 mounted on a lifting and swinging frame 3 of the support base 2, located on the chassis 1 between the running front and rear wheels. The telescopic boom 4 is mounted with the possibility of moving it from the transport folded position to the working - unfolded position, on it on the bracket 45 a working platform 5 is fixed, in the transport position located above the car cabin. The telescopic boom 4 is connected to a lifting and swinging frame 3 with a lifting hydraulic cylinder 24 and is supported in the transport position on a rack 17 located in front of the support base 2. The telescopic boom 4 is made of four sections, has sections 27, 28, 29, 30. The telescoping hydraulic cylinder 33 is located below the boom, and the electric cables and hydraulic pipes are inside the boom sections 4. The support base 2 comprises retractable front 6 and rear 7 supports located at an angle relative to the longitudinal and transverse axes .

The hydraulic car lift is equipped with a remote control 16 located in the transport position in the electrical compartment 15 on the supporting base 2.

The supporting base 2 (Fig. 1) is a welded box-section construction with outrigger supports 6 and 7 and floor 8. The front supports 6 are carried forward at an angle to the base platform, thereby increasing the support contour. Outriggers 6 and 7 telescopic, box section. The extension of the outriggers 6 and 7 is carried out using hydraulic cylinders that are installed inside them. In the transport position, the supports 6 and 7 are fixed from involuntary extension by the clamps 9.

On the basis of the supporting 2 (Fig. 1) in the rear there is a superstructure 10, on which a rotary support 11 with a hydraulic motor 12 is mounted.

A pivoting-swinging frame 3 is mounted on a pivoting support 11 with a hydraulic motor 12. A guard 13 is installed on two sides of the base of the supporting 2 (Fig. 2). In the middle part of the base of the supporting 2 there is a cargo compartment 14 with hinged sides. On the starboard side under deck 8 in the rear of the base of the support 2 below is a compartment of electrical equipment 15 with an external control panel 16. In the front of the base of the support 2 there is a support strut 17 of the boom 4 with the fixation unit in transport position 18 and a hydraulic tank 19 is installed. anti-recoil stops are installed 20. At the rear of the base of the support 2, a rear beam 21 is installed.

The lifting and swinging frame 3 is a welded structure with box-section walls and with a rear sheet wall. The tracking cylinder of the orientation system 22 of the working platform 5 is mounted on the right wall of the lifting-rotary frame 3. On the bracket 23, one side is attached to the lifting cylinder 24 of the boom 4, the rod of which is mounted on the bracket 25 of the boom 4. A casing 26 is installed on the rear sheet wall to cover the frame hydraulic system tilt-up 3.

Telescopic boom 4 (figure 1) of the lift is made four-section. The boom sections 27, 28, 29, 30 of the welded construction of the box section are made of two upper 31 and lower 32 U-shaped boxes (Fig.6).

The telescoping mechanism, the laying of electrical cables, hydraulic pipes and hoses is located inside sections 27, 28, 29, 30 of the boom 4. The telescoping hydraulic cylinder 33 is located below the boom 4.

A working platform 5 is attached to the head of the upper section 30 of the boom 4 on the bracket 45 and the orientation cylinder 34 of the working platform 5 is located. In the middle of the boom section 27 there is a bracket 25 for attaching the rod of the telescoping hydraulic cylinder 33 of the boom 4.

The working platform 5 of the elevator (FIGS. 3 and 4) is transformable, welded, made in the form of a box, consisting of two sections, of which the lower has a bottom and side walls, and the upper has side walls, while the sections are interconnected by side racks 44 with a hinge mechanism 35 provided with clamps 40, with the possibility of rotation of the upper section by 180 ° and folding it under the lower section.

Under the lower section of the working platform 5, insulators 39 are installed, and the surface of the railing of the upper section (Fig. 3) is lined with low-conductivity material 37 and is convenient for grasping by hand.

On the fence of the upper section of the working platform 5, a control panel 41 is installed and there are fastening points for the carabiners of the safety belts of the workers 42.

In the attachment point of the working platform 5 and boom 4, a limit load limiter 38 is installed.

The working platform is equipped with a position sensor relative to the horizon and its orientation system with an actuator.

Works hydraulic car lift as follows.

Translation of the lift from transport to working position is as follows.

The elevator is installed in the chosen place, manual clips are removed from the outrigger supports 6 and 7 and the boom.

The hydraulic lift is lifted on the outrigger supports 6 and 7 to a height sufficient to unload the chassis springs 1. To do this, use the lower hydraulic circuit and turn off the outrigger supports 6 and 7.

Turns on the upper hydraulic circuit (lifting and swiveling base 2 and boom 4) and the telescopic boom 4 is lifted from the support strut 17 and is pulled to the side (Fig. 2). After lowering the boom 4 down, the working platform 5 is transferred from the transport folded position (Fig. 3) to the working one, in which the upper section is rotated 180 °, increasing the height of the working platform 5, and is fixed in this position by the latches 40 (Fig. 4). The working platform 5 lowers to the landing position and people are landing through the landing opening with a guard 43 (Fig. 5). Telescoping boom 4 is the lifting platform working 5 with people to the required height for the work. The departure of boom 4 in the working field is limited automatically. The lift is controlled from the lower remote control located in the electrical compartment 15 or from the remote control 41 mounted on the guard 36 of the working platform 5 (Fig. 4).

The transfer of the lift from the worker to the transport position is as follows.

Using the upper hydraulic circuit, the boom 4 with the working platform 5 is folded and lowered to a distance sufficient for safe landing of people. After disembarking people, the working platform 5 is transferred to the transport position (Fig. 3), while its upper section is pivoted by a hinge mechanism 35 through 180 °, is installed under the lower section and is fixed by latches 40.

Arrow 4 in the folded form is raised and mounted on the stand supporting 17. The latches 18 are installed.

The remote control panel 16 controls the lift is removed in the compartment for electrical equipment 15.

The lower hydraulic circuit is turned on and the elevator is lowered on the outrigger supports 6 and 7. After the outriggers 6 and 7 are completely folded out, the clamps 9 are installed from the worker to the transport position.

Thus, the proposed automotive hydraulic lift is characterized by a compact design, high reliability, due to:

- execution of the working platform 5 transformable, folding, which reduces the overall dimensions of the hydraulic automobile lift in the transport position;

- implementation of the telescopic boom 4 four-section, which allows to make the dimensions of the lift compact and leads to better maneuverability in a city;

- the location of the telescoping hydraulic cylinder of sections 27, 28, 29, 30 of the boom 4 from below under the boom, which protects it from damage during operation and increases the convenience of inspection and maintenance;

- laying electrical cables and hydraulic pipes inside sections 27, 28, 29, 30 of the boom 4. which allows you to protect them from damage and improve the appearance of the boom;

- perform retractable front and rear supports at an angle relative to the longitudinal and transverse axes of the car lift, which increases the stability of the lift.

Claims (7)

1. A hydraulic car lift containing a chassis on the running front and rear wheels, on a lifting and swinging frame of the support base located on the chassis between the running front and rear wheels, a telescopic boom is installed with the possibility of moving from the transport folded position to the working one - unfolded, on which the working platform is suspended, in the transport position located above the car cabin, made in the form of a box, while the telescopic boom is connected to the guide-lift frame the lifting cylinder and rests in a transport position on a rack located in front of the support base, and the support base contains retractable front and rear supports, characterized in that the working platform is transformable and consists of two sections, of which the bottom has a bottom and side walls, and the upper side walls, while the sections are interconnected by means of side racks with a hinged mechanism equipped with clamps, with the possibility of turning the upper section 180 ° and folding it under the lower section d. 2. The lift according to claim 1, characterized in that insulators are installed under the lower section of the working platform, and the surface of the rail of its upper section is lined with low-heat-conducting material. 3. The elevator according to claim 1, characterized in that a control panel is installed on the fence of the upper section of the working platform and there are mounting points for the carabiners of the safety belts of the workers. 4. The lift according to claim 1, characterized in that the limit load limiter is installed in the attachment point of the working platform and boom. 5. The lift according to claim 1, characterized in that the working platform is equipped with a position sensor relative to the horizon and its orientation system with an actuator. 6. The hydraulic car lift according to claim 1, characterized in that the telescopic boom is four-sectional, the lifting hydraulic cylinder is located below the boom, and the electric cables and hydraulic pipes are located inside the boom sections. 7. Hydraulic car lift according to claim 1, characterized in that the retractable front and rear supports are located at an angle relative to the longitudinal and transverse axes of the car lift.

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