RU87391U1 - EMERGENCY TECHNICAL MACHINE FOR MAINTENANCE OF ELECTRIC NETWORKS OF TRAMWAYS AND TROLLEYBUSES - Google Patents

Abstract

1. An emergency technical vehicle for servicing electric contact networks of trams and trolleybuses, including a car chassis, a kung with the main and technological compartments, an adapter pad on the roof of the main compartment, an installation pad with lifting and horizontal movement mechanisms, and a device for blocking spontaneous lowering of the mounting pad, handrail, transformable into working and transport position, duplicating electric control panel, emergency transition ladder from the transition platform to the sea tazhnoe, removable cassette for the transport of long materials with loading suspension, characterized in that the device for blocking the spontaneous lowering of the mounting platform is made in the form of two telescopic elements pivotally connected to the same horizontal beams as the lifting elements equipped with a wedge grip spring-loaded towards the jamming side and equipped with a power opening cylinder, the cavity of which is communicated through the "OR" valve with the lifting and lowering lines of the working platform, and the horizon mechanism The movement of the mounting platform consists of two pivotally connected horizontal levers, the first of which is pivotally connected to the mounting frame body and the power cylinder, and the second is pivotally connected to the mounting frame of the mounting frame that is movable in the horizontal plane, the size between the hinges of the power cylinder being neutral the position of the mounting pad, corresponding to the distance to the hinge axis of the first lever, should be equal to or less than half the transport dimension of the chassis

Description

The inventive utility model relates to the field of vehicles equipped with lifting devices and intended, in particular, for servicing contact networks of trams and trolleybuses. The main purpose of this kind of machines is to transport the assembly or repair team with the necessary set of tools, fixtures and materials to the place of work and lifting the workers to a height of, as a rule, 6-7 m from the ground level.

A model of such a machine of the AB-3M brand, operating in Moscow, produced by the SVARZ plant (see, for example, “Emergency-technical machine of the AB-3M brand”, Technical Description and Operating Instructions. TO-876-97, g, is known .Moscow, 1997, State Enterprise “SVARZ”). The main disadvantage of this machine is its lack of reliability and the possibility of skewing the lifting mechanism of the mounting platform of this machine, made in the form of four telescopic mechanical vertical hoists with tackle cable devices and a mechanical winch.

When servicing contact networks, the AP-7M aerial platform, manufactured by Novomoskovsk Machine-Building Plant, is also used (see “AP-7M Aerial Work Platform.” Technical Description, Moscow, 2003, Novomoskovsk Machine-Building Plant). The installation is mounted on the basis of the ZIL-433362 chassis. The lifting mechanism of the mounting pad with articulated boom made in the form of two articulated joints. Each elbow represents a parallelogram equipped with two welded tubular frames with hinges at the ends. With known advantages compared to the AB-3M machine, the AP-7M aerial platform is not free from a number of disadvantages, in particular:

- the possibility of transportation of long parts and assemblies necessary for the repair of the contact network is not provided;

- the telescopic ladder is inconveniently located and mounted for lifting (lowering) from the transition to the working platform;

- insufficient safety at the work site;

- insufficient reliability of the emergency lowering of the working platform (the drive of the additional hydraulic pump is made from the car engine).

The prototypes of the claimed utility model may be an emergency technical vehicle АТМ-0.5 / 7, manufactured by NPK RANKO, technical solutions are protected by utility model patents No. 47821 (B66F 11 / 04B, bulletin No. 25 dated 09/10/2005) “Emergency technical vehicle (options)” and No. 53337 (B66F 11/04, bull. No. 13 dated 05/10/2006) “Emergency technical machine for servicing electrical contact networks” and No. 71606 (B66F 11/04, bull. No. 8 dated March 20, 2008) "Emergency technical vehicle for servicing electrical contact networks."

The ATM-0.5 / 7 machine is equipped with a pantograph-type lifting boom mechanism, has an open cargo area (compartment), a telescopic ladder for emergency descent from the installation site, horizontally stacked on the transition platform, and is also equipped with a lifting device for lifting materials and tools, a ladder lifting to the transition platform, a removable cassette for transporting and reloading long materials, a lifting device for loading long materials, attached to a movable frame th site.

The disadvantages of the design of the ATM-0.5 / 7 are:

- a horizontal displacement drive in the form of two opposed hydraulic cylinders leads to a sharp jump in pressure, to eliminate which it was required to create a special hydraulic lock with a multiplicity of 12, a significant deflection of the rods, causing significant leaks;

- railings in vertical guides often jam, two-section railings stacked on the transition platform, clutter the latter;

- the attachment of the loading device of lengthy materials to the movable frame of the installation site creates inconvenience, because displays immersed materials beyond the vertical plane of symmetry of the cartridge;

- there is no support for mounting a backup control panel.

The inventive utility model is aimed at eliminating the above drawbacks and creating such an emergency technical vehicle, the design of which would allow for reliable automatic blocking of the mounting pad in the raised position, applying a reliable and simple mechanism for horizontal movement of the mounting pad, simplifying the design of the railing and facilitating their installation in the working and transport position, to ensure the automatic hit of long materials on the cassette and the upper support, to ensure ease of use s with redundant remote control.

The solution to this problem is ensured by the fact that an emergency technical vehicle for servicing electric networks of trams and trolleybuses, including a car chassis, a kung with a main and technological compartment, a transition platform on the roof of the main compartment, an installation platform with horizontal movement and lifting mechanisms with a spontaneous lowering lock device mounting site, railings, transformable into working and transport positions, duplicating electrical control panel, emergency transition ladder from the transition platform to the mounting, removable cassette for the transport of long materials with loading suspension. The emergency technical vehicle is also equipped with a blocking device for spontaneous lowering of the mounting pad made in the form of telescopic elements pivotally connected to the same horizontal beams as lifting elements equipped with a wedge grip spring-loaded to the side of the wedge and equipped with a power opening cylinder, the cavity of which communicates through "OR" valve with lifting and lowering lines for the installation site.

The mechanism for horizontal movement of the mounting pad consists of two articulated horizontal levers, the first of which is pivotally connected to the mounting frame body and the power cylinder, and the second is pivotally connected to the mounting frame of the mounting frame that is movable in the horizontal plane, the size between the hinges of the power cylinder , in the neutral position of the mounting pad, the corresponding distance to the hinge axis of the first lever must be equal to or less than half of the conveyor the overall dimensions of the chassis.

Transformable railings are made in the form of a flat metal structure, rotatable in a vertical plane and provided with a hinge on the lower element in the middle part with a horizontal axis of rotation connected to the support sleeve on the transition platform and a horizontal rod on the edge of the lower element interacting in the transport and working position with forks equipped with clamps located on the transitional area along the edges of the railing.

The rollers for horizontal movement of the mounting platform are equipped with a rod with an eccentric displacement of the mounting axis relative to the axis of rotation of the roller.

A redundant electric control panel is mounted on a rack that rotates in a vertical plane.

As a loading device for long materials, a flexible element is used, attached to the bottom of the fixed frame of the mounting platform in the vertical plane of symmetry of the cassette and the upper support, made in the form of a fork open from above.

The technical features of the claimed utility model can be implemented using tools used in general engineering.

The distinguishing features reflected in the formula of the utility model are necessary for its implementation and sufficient, because provide a solution to a technical problem.

In the future, the claimed utility model is illustrated by an example of its implementation, schematically depicted in the accompanying drawings, in which:

Figure 1 - diagram of an emergency technical vehicle in accordance with the claimed utility model (side view);

Figure 2 is a diagram of an emergency technical vehicle in accordance with the claimed utility model (end view);

Figure 3 is a longitudinal section of a device for blocking spontaneous lowering of the installation site;

Figure 4 - the mechanism of horizontal movement of the installation site (plan view);

5 is a rotary railing (side view and section);

6, 7 - diagram of the loading device of long materials;

Fig - rack backup console;

Fig.9 - rollers for moving the installation site.

Figure 1 shows an emergency technical vehicle consisting of a chassis 1, a main compartment 2 of a kung for transporting a repair team, a technological compartment 3 on which a scissor lift pantograph 4 is mounted to lift a mounting platform 5 and hydraulic equipment with a remote control 6, a transportation platform cargo 7, a hydraulic auxiliary lift 8 with a cassette 9 for transporting long loads 10, based on the front support 11, the transition platform 12 with a hatch 13 to exit the main compartment 2, transformable railing 14 transitional flats 12, a backup electrical panel 64 on the rotary column 15, an emergency telescopic ladder 16 for transition from the transition platform 12 to the mounting, outriggers 17.

The mounting platform includes a frame 18 which is stationary in the transverse direction and movable - 19, moving on the rollers 20 by means of a hydraulic actuator.

Figure 2 shows the hydraulic drive of the lifting pantograph 4, consisting of two hydraulic cylinders 21, pivotally supported by two horizontal beams 22, 23. The locking device 24 of the spontaneous lowering of the mounting platform is pivotally supported on the same beams (Fig. 3). The latter consists of a lower 25 and an upper 26 telescopic elements with eyes 27, 28, a wedge clamp housing 29, in which wedges 30 are mounted, held by a spring 31 in a wedged position, and a proppant cylinder 32 with a piston 33 resting against the wedges 30. Cavity 34 of the cylinder 32 is connected alternately with the supply lines of the rise 35 and descent 36 through the valve "OR" 37. Directly to the elevator are lines 39 (rise) and 38 (lowering), connected with lines 35 and 36 through the chokes 40 and 41.

Figure 4 shows the mechanism of horizontal movement of the mounting pad perpendicular to the longitudinal axis of the chassis. In the neutral position, the size of the mounting pad is equal to the transport dimension of the chassis. The mechanism consists of a first lever 42 pivotally connected to the fixed frame 18 of the mounting platform, with a second lever 43 and to the rod of the power cylinder 44. The housing of the power cylinder is pivotally connected to the fixed frame 18. The second end of the second lever is pivotally connected to the movable frame 19 of the mounting platform by finger 45. In Fig. 4, the mounting pad is shown in the neutral (transport) position, with the rod of the actuator 44 being half extended. In this position, the dimension of the cylinder between the joints should not be more than half the transport dimension of the chassis. This state is ensured by the corresponding value of the distance from the hinge 46 to the hinge 47.

Figure 5 shows the transformable railing of the transition area. Each section of the railing 14 is made in the form of a flat metal structure placed in a vertical plane outside the main compartment 2 of the kung. The lower power element 48 of the structure is provided with a horizontal pin 49 rigidly connected to it, which enters the sleeve 50, rigidly connected to the adapter pad 12. At the edge of the lower power element there is a locking rod 51 with a horizontal axis. Two brackets 52 with clamps 53 in the form of a screw with a tapered end are rigidly fixed on the transition platform. The distance from the axis of the finger 49 to the plane of symmetry of the groove of each of the brackets 52 is the same.

Fig.6, 7 shows a device for transporting and handling long materials. It consists of a removable cartridge 9 (in this example, for two pipes) with a spring-loaded pad 55 (a spring located in a reversible shock absorber that holds the pad in a horizontal position), clamping brackets 56 on the pad, front support 11 with two vertical stops 58, flexible loading element 59 and eyelets 60 for attaching the upper end of the flexible element located in the vertical plane of symmetry of the cassette 9 and the front support 11. The lower end of the flexible element 59 is provided with a gripper 61 for lifting long materials ( For example, tubes) 62 from the ground in the transport position.

On Fig depicts a backup electric control panel 64 mounted on a rotary column 15, pivotally connected to the movable frame 19 of the mounting platform. In the working (vertical) position and the transport (horizontal) rack 15 is held by a spring 65.

Figure 9 shows one of the mounting assemblies of the roller 66 of the movable frame 19 of the mounting platform, moving in the guides 67 of the fixed frame 18, perpendicular to the longitudinal axis of the chassis. The rollers 66 are mounted on the cylindrical part of the shaft 68, eccentric with respect to the cylindrical part 69, rigidly fixed in the movable frame 19.

The emergency technical vehicle operates as follows.

To raise the installation site to the required height, a scissor-type pantograph 4 is used, which is moved by two power cylinders 21 pivotally connected to the sections of the elevator through two horizontal beams 22 and 23 (Fig. 2). Between the cylinders is placed a locking device 24 of telescopic action, having the same stroke as the cylinders. When pressure is applied to line 35, the working agent enters the cylinder lifting cavity through the throttle 40 and into the cylinder cavity 34 through the valve 37. The piston 33 rises and, breaking the spring 31, raises the wedges 30, which, sliding along the guides (not shown), release inner (upper) telescopic element 26. When moving upward, the working agent of the cylinder lowering cavity enters through the drain lines 38, 36. The lowering operation is similar.

In the event of an emergency, when the pressure drops, the wedges 30 under the action of the spring wedge the inner element 26 relative to the housing 29, thereby preventing the retraction of the inner element 26 into the outer 25, i.e. lowering the installation site. The purpose of the throttles 40, 41 is to ensure consistency: first the pressure rises in the cylinder 32 and the wedging occurs, and then in the power cylinders and the implementation of work operations (ascent or descent).

To implement horizontal movement of the movable platform in the transverse direction relative to the longitudinal axis of the chassis (figure 4), the working agent is supplied either to the rod or to the piston cavity of the cylinder. In this case, the first lever 42 is rotated (respectively) either counterclockwise or clockwise relative to the hinge 46. In this case, the second lever 43, connected to the first and movable frame of the mounting pad through the hinge 45, moves the latter in opposite directions. The maximum movement of the platform in each of the sides corresponds to half the stroke. In the neutral position of the movable frame, the cylinder rod is half extended.

Transformable railing (Fig. 5) located in a vertical plane outside the main compartment 2. To transfer the railing section 14 from the working (raised) position to the transport (lowered) position, the right latch 53 is released, releasing the rod 51, then the section is rotated relative to the axis of the horizontal finger 49 to 180 °. In this case, the rod 51 enters the groove of the left fork 52 and is fixed in it by the latch 53. The translation into the working position is carried out in the reverse order.

The sequence of manipulations with long materials (for example, pipes) is shown in FIGS. 6, 7. A pipe lying on the ground is picked up by a gripper 61 at a point shifted to the left from the center of gravity. When lifting the mounting platform, it first rises, by means of the flexible element 59, the left end to the level of the cassette 9, i.e. the attachment point of the flexible element is in the vertical plane of symmetry of the cartridge and the front support 11, the pipe is shifted to this plane. Then the left end is laid on the platform of the cartridge and mounted on it. In this case, the platform rotates a certain angle clockwise, compressing the shock absorber. Then the lifting continues, and the right end of the pipe is laid on the front support 11 between the stops 58. In this operation, the pipe automatically falls into the mentioned plane of symmetry, therefore, manual operations are not required. In this position, the pad rotates counterclockwise, compressing the shock absorber. Then the mounting platform is lowered into the transport (lowermost) position, locking the pipe on the upper support.

Overloading the pipe to the installation site is as follows. The tightening of the clamping brackets on the cassette is removed and the pipe is displaced in the axial direction until the approximate coincidence of its center of gravity with the middle of the cassette and stops in this position. In this case, the shock absorber sets the pipe horizontally. The pipe together with the platform of the cartridge is rotated by a certain angle in the plan (Fig.7) in order to bypass the corner of the installation site when lifting. The pipe with the cassette is lifted by means of the hydraulic auxiliary lift 8 to the highest position 70, its right end is manually lifted to the level of the railing 71 of the mounting platform, rotated in a horizontal plane, the clamping brackets of the cassette 9 are tilted and reloaded onto the mounting platform by manual axial movement. Unloading is performed in reverse order.

The position of the rollers 66 (Fig. 9) is adjusted by rotating the axis 69 with the nuts 72 loosened. The criterion is to find the axes of all the rollers in the same plane.

Thus, the proposed utility model will increase the safety of work due to the presence of an automatic locking device for spontaneous lowering of the mounting pad even when the hydraulic locks of the lifting cylinders fail, to ensure horizontal movement of the mounting pad by a simple and reliable mechanism, and to use a simple and safe device for transforming railings that do not clutter transition platform, to mechanize the transportation of long materials, to provide the possibility of operational but use the backup control panel of the repair team and carry out precise adjustment of the rollers of the assembly site without machining the guides.

Claims (5)

1. An emergency technical vehicle for servicing electric contact networks of trams and trolleybuses, including a car chassis, a kung with the main and technological compartments, an adapter pad on the roof of the main compartment, an installation pad with lifting and horizontal movement mechanisms, and a device for blocking spontaneous lowering of the mounting pad, handrail, transformable into working and transport position, duplicating electric control panel, emergency transition ladder from the transition platform to the sea tazhnoe, removable cassette for the transport of long materials with loading suspension, characterized in that the device for blocking the spontaneous lowering of the mounting platform is made in the form of two telescopic elements pivotally connected to the same horizontal beams as the lifting elements equipped with a wedge grip spring-loaded towards the jamming side and equipped with a power opening cylinder, the cavity of which is communicated through the "OR" valve with the lifting and lowering lines of the working platform, and the horizon mechanism The movement of the mounting platform consists of two pivotally connected horizontal levers, the first of which is pivotally connected to the mounting frame body and the power cylinder, and the second is pivotally connected to the mounting frame of the mounting frame that is movable in the horizontal plane, the size between the hinges of the power cylinder being neutral the position of the mounting pad, corresponding to the distance to the hinge axis of the first lever, should be equal to or less than half the transport dimension of the chassis . 2. The emergency technical vehicle according to claim 1, characterized in that the transformed railing is made in the form of a flat metal structure, rotatable in a vertical plane and provided on the lower element with a hinge in the middle part with a horizontal axis of rotation connected to the supporting sleeve on the transition platform and horizontal a rod on the edge of the lower element, interacting in the transport and working positions with forks equipped with clamps placed on the transitional platform along the edges of the railing. 3. The emergency technical vehicle according to claim 1, characterized in that the rollers for horizontal movement of the mounting platform are provided with a rod with an eccentric displacement of the mounting axis relative to the axis of rotation of the roller. 4. The emergency technical vehicle according to claim 1, characterized in that the backup electric control panel is placed on a rack rotatable in a vertical plane. 5. The emergency technical vehicle according to claim 1, characterized in that a flexible element is used as a loading device for long materials, attached to the bottom of the fixed frame of the mounting pad in the vertical plane of symmetry of the cassette and the upper support, made in the form of a fork open from above.