CN102815524A - Accurate positioning device for heavy equipment moving workbench - Google Patents

Abstract

The invention discloses a precise positioning device for a mobile workbench of heavy equipment, which comprises an equipment base, a lifting mechanism, a longitudinal clamping mechanism, a transverse clamping mechanism and a positioning plate. The lifting mechanism is fixedly installed on the equipment base, and the lifting mechanism A load-bearing plate that can move longitudinally and laterally is installed, and the lifting mechanism is fixedly connected with an elastic reset mechanism by the ends of the longitudinal clamping mechanism and the lateral clamping mechanism, and a positioning block is fixedly connected with the elastic reset mechanism under the load-bearing plate, and the positioning plate is connected with the elastic reset mechanism. The longitudinal clamping mechanism and the transverse clamping mechanism are relatively fixedly installed on the equipment base, the longitudinal clamping mechanism and the longitudinal positioning plate jointly clamp the equipment longitudinally, and the transverse clamping mechanism and the transverse positioning plate jointly clamp the equipment horizontally. The invention uses universal balls to support the load-bearing plate to realize horizontal movement, and uses longitudinal and transverse clamping mechanisms respectively to realize precise positioning of the equipment with the positioning plate. The invention has the characteristics of high positioning accuracy, high reliability, simple structure, low cost and easy maintenance.

Description

An accurate positioning device for a mobile workbench of heavy equipment

technical field

The invention belongs to the technical field of mechanical equipment workbench positioning, and in particular relates to a precise positioning device for a heavy equipment mobile workbench.

Background technique

Heavy equipment generally has a harsh working environment, and the workbench and its loads are heavy, so conventional precise positioning methods are difficult to meet the requirements of precise positioning. The precise positioning of the existing heavy equipment mobile workbench generally uses proximity switches, sidewalls, grating rulers or digital encoders for positioning. If the proximity switch and sidewall positioning are used, when the proximity switch senses heavy equipment, it will send a signal to stop the heavy equipment workbench from moving. Due to the huge inertia of the workbench and its load, it is difficult to ensure that it is in close contact with the sidewall every time. Therefore, the required positioning accuracy cannot be met, and generally it can only be positioned in one direction. If a grating ruler or a digital encoder is used for positioning, the positioning accuracy requirements can only be achieved in one direction, and the manufacturing cost and use environment requirements are relatively high, and the reliability and maintainability are poor, which cannot meet the needs of precise positioning. Especially the precise positioning of the mobile preparation tank used in the sugar and spice preparation system, due to the continuous movement of the preparation tank of the fully automatic mobile preparation system on the conveying line, according to the requirements of process parameters, it is necessary to heat and stir during the liquid preparation process Waiting for the process, so it is necessary to connect with the agitator and heating and cooling system at the designated position, and accurately locate the parking position of the brewing tank, because the total weight of the brewing tank to be positioned is more than 3 tons, and the positioning accuracy is required to be ±2mm , the existing positioning methods are difficult to meet the requirements. If a kind of precise positioning device for heavy equipment can be developed, especially the mobile brewing tank precise positioning device used in the sugar and spice preparation system, and it can also have the performance of high reliability, simple structure, low cost and easy maintenance, it will have realistic economic and social benefits.

Contents of the invention

The object of the present invention is to provide a precise positioning device for a mobile workbench of heavy equipment, which has the characteristics of high positioning accuracy, high reliability, simple structure, low cost, and easy maintenance.

The present invention is realized in the following way: it includes an equipment base, a lifting mechanism, a longitudinal clamping mechanism, a transverse clamping mechanism, and a positioning plate. The lifting mechanism is fixedly installed on the equipment base, and the lifting mechanism is equipped with A load-bearing plate that can move longitudinally and laterally, the lifting mechanism is fixedly connected with an elastic reset mechanism at the ends of the longitudinal clamping mechanism and the lateral clamping mechanism, and a positioning block is fixedly connected with the elastic reset mechanism under the load-bearing plate , the positioning plate is relatively fixedly installed on the equipment base with the longitudinal clamping mechanism and the transverse clamping mechanism, the longitudinal clamping mechanism and the longitudinal positioning plate jointly clamp the equipment longitudinally, and the transverse clamping mechanism and The positioning plates collectively clamp the device laterally.

The invention adopts the load-bearing plate supported by the universal ball to lift and move the workbench and its load, and adopts longitudinal and transverse clamping mechanisms to cooperate with the positioning plate respectively to realize the horizontal precise positioning of the heavy equipment mobile workbench. Because the universal ball support is used to realize the movement adjustment, the fixed positioning plate and the clamping mechanism together realize the horizontal and precise positioning, which overcomes the problem that the heavy equipment has a large inertia and is difficult to position accurately, and the whole movement adjustment mechanism and the clamping mechanism do not use high Therefore, the invention has high reliability, simple structure, low investment cost, easy maintenance in the later stage, and can meet the precise positioning of the mobile workbench of heavy equipment, especially the precise positioning of the mobile brewing tank used in the sugar and spice preparation system.

Description of drawings

Fig. 1 is the overall structural layout schematic diagram of the present invention;

Fig. 2 is a structural schematic diagram of a lifting mechanism and a lateral clamping mechanism of the present invention;

Fig. 3 is a side view of Fig. 2;

Fig. 4 is a structural schematic diagram of the longitudinal clamping mechanism of the present invention.

In the figure: 1-equipment base, 2-lifting mechanism, 21-elastic reset mechanism, 22-load bearing plate, 23-positioning block, 24-universal ball platform, 25-universal ball, 26-rolling groove, 3- Longitudinal clamping mechanism, 4-horizontal clamping mechanism, 5-positioning plate, 6-worktable, 7-conveyor system track, 8-conveyor system power unit, 9-auxiliary conveying system.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited in any way, and any changes or replacements made according to the teaching of the present invention belong to the protection scope of the present invention.

As shown in Figures 1 to 4, the present invention includes an equipment base 1, a lifting mechanism 2, a longitudinal clamping mechanism 3, a transverse clamping mechanism 4, and a positioning plate 5, and the lifting mechanism 2 is fixedly installed on the equipment base 1 Above, the lifting mechanism 2 is equipped with a load-bearing plate 22 that can move longitudinally and laterally, and the lifting mechanism 2 is fixedly connected with an elastic reset mechanism 21 at the ends of the longitudinal clamping mechanism 3 and the horizontal clamping mechanism 4 respectively. The positioning block 23 is paired and fixedly connected with the elastic reset mechanism 21 under the bearing plate 22, and the positioning plate 5 is relatively fixedly installed on the equipment base 1 with the longitudinal clamping mechanism 3 and the transverse clamping mechanism 4. The longitudinal clamping mechanism 3 and the longitudinal positioning plate 5 jointly clamp the equipment longitudinally, and the described transverse clamping mechanism 4 and the transverse positioning plate 5 jointly clamp the equipment laterally.

The present invention also includes a control device, which includes controlling the action sequence and positioning time of the lifting mechanism 2 , the longitudinal clamping mechanism 3 and the lateral clamping mechanism 4 .

The control device is a single-chip microcomputer, a single-board computer or a microcomputer control device.

The lifting mechanism 2 is an electric crank connecting rod lifting mechanism or a hydraulic lifting mechanism.

The load-bearing plate is supported by a universal ball platform fixedly connected to the lifting mechanism, and a rolling groove is fixedly arranged under the load-bearing plate corresponding to the universal ball, and the universal ball rolls in the rolling groove.

The longitudinal clamping mechanism 3 and/or the transverse clamping mechanism 4 are pneumatic clamping mechanisms, hydraulic clamping mechanisms and electric clamping mechanisms.

Two or more than two load-bearing plates 22 are arranged laterally.

The elastic reset mechanism 21 and the positioning block 23 are respectively installed with two or more sets corresponding to each load-bearing plate 22 horizontally and/or vertically.

The elastic return mechanism 21 is a metal spring return mechanism, an air spring return mechanism or a rubber spring return mechanism.

Working principle and working process of the present invention:

The heavy equipment mobile workbench is transported to the position requiring precise positioning through the conveying system. The lifting mechanism uses the load-bearing plate as the carrier according to the control signal to lift the heavy equipment mobile workbench and its load to make it higher than the conveying system. Since the load-bearing plate of the lifting mechanism is supported by universal balls, the load-bearing plate and the equipment it carries can be moved and adjusted horizontally. Sequentially push the load-bearing plate, the equipment table and the load to move to and stick to the corresponding positioning plate to realize positioning and clamping, so that it can be accurately positioned to the predetermined working position, and the corresponding longitudinal and transverse elastic reset mechanisms are in a compressed state. After the positioning time and process meet the requirements, loosen the longitudinal and transverse clamping mechanisms in turn, and the load-bearing plate, workbench and its loads are reset by the elastic reset mechanism, and then the lifting mechanism lowers the load-bearing plate to make the workbench and its load The object falls onto the conveying system, thus completing the entire precise positioning process.

The invention has the characteristics of high positioning accuracy, high reliability, simple structure, low cost and easy maintenance, can effectively meet the precise positioning requirements of the heavy equipment mobile workbench, improves the reliability of the heavy equipment precise positioning device, and significantly reduces the Input and post-maintenance costs.

An example is used to further illustrate the present invention below. The precise positioning of the mobile brewing tank used in the sugar and spice preparation system, the brewing tank is installed in the middle of the three-row chain conveyor track, and the chain conveyor track and the equipment base are bolted together, and the equipment passes through The chain conveyor system transports to the position that needs precise positioning.

The driving reduction motor of the electric crank-link lifting mechanism is installed on the equipment base, and the eccentric transmission gear is installed on the output shaft of the reduction motor. It is connected with the universal ball platform, and the universal ball is fixed on the universal ball platform and rolls in the circular area of the rolling groove installed by bolts under the bearing plate. On the lifting mechanism under each load-bearing plate, two sets of spring return devices are fixed longitudinally and horizontally, and two positioning blocks are respectively installed in the vertical and horizontal directions under each load-bearing plate to match the spring return device, and the positioning block and the spring reset The spring thimble of the device is in contact, and the spring thimble is connected with the spring and the spring return device through the retaining ring for the shaft.

When the equipment is transported to the position that requires precise positioning through the chain conveyor system, the lifting motor of the electric crank-link lifting mechanism is started at this time, relying on gear transmission to drive the crank-link mechanism to move, and the universal ball platform, universal The load-bearing device composed of the ball and the load-bearing plate moves upward until it reaches the set height. At this time, the equipment is lifted, and the equipment is in a plane floating state and locked in position, so that the gravity of the heavy equipment acts on the load-bearing plate. At this time, the motor of the lateral clamping device starts, and drives the crank linkage device to push the load-bearing plate and the equipment it carries to the positioning plate until the equipment on the load-bearing plate is close to the positioning plate. At this time, the lateral clamping mechanism is locked to achieve accurate horizontal positioning. , and make the spring of the horizontal spring return device in a compressed state; then repeat the appeal action in the longitudinal direction to achieve precise vertical positioning, and the spring of the longitudinal spring return device is in a compressed state; thus achieving the purpose of precise horizontal positioning of the equipment. When the positioning time and process meet the requirements, the motor of the lateral clamping mechanism reverses, and the thrust acting on the load-bearing plate disappears, and the load-bearing plate is reset by the elastic force of the return spring. When the reset sensing device detects that the high-precision load-bearing plate is reset, the motor of the electric crank-link lifting mechanism reverses, and the motor drives the crank-link mechanism to lower the load-bearing plate and the equipment it carries, and the equipment falls on the conveying system again, and the load-bearing The board is separated from the loaded equipment, thus completing a precise positioning process.

Claims (9)

1. heavy wares traverser accurate positioning device; Comprise plant bottom case (1), lifting mechanism (2), vertical clamping mechanism (3), horizontal clamping mechanism (4), locating plate (5); It is characterized in that: described lifting mechanism (2) is fixedly mounted on the plant bottom case (1); The bearing plate (22) that the ability vertical and horizontal move is installed on the described lifting mechanism (2); Described lifting mechanism (2) leans on vertical clamping mechanism (3) and horizontal clamping mechanism (4) end to be fixedly connected with flexible restoring organ (21) respectively; Described bearing plate (22) descends and flexible restoring organ (21) pairing is fixedly connected with locating piece (23); Described locating plate (5) is with vertically clamping mechanism (3) and horizontal clamping mechanism (4) relative fixed are installed on the plant bottom case (1) the common vertically apparatus for fastening of described vertical clamping mechanism (3) and longitudinal register plate (5), described horizontal clamping mechanism (4) and the jointly horizontal apparatus for fastening of located lateral plate (5).

2. heavy wares traverser accurate positioning device according to claim 1; It is characterized in that: also comprise control setup, described control setup comprises the sequence of operation and the time for positioning of control lifting mechanism (2), vertical clamping mechanism (3) and horizontal clamping mechanism (4).

3. heavy wares traverser accurate positioning device according to claim 2 is characterized in that: described control setup is micro controller system, single board computer (SBC) or microcomputer control setup.

4. heavy wares traverser accurate positioning device according to claim 1 is characterized in that: described lifting mechanism (2) is electronic crank connecting link lifting mechanism or hydraulic lifting mechanism.

5. heavy wares traverser accurate positioning device according to claim 1; It is characterized in that: the multi-directional ball platform (24) that described bearing plate (22) is gone up captive joint by lifting mechanism (2) supports; Said bearing plate (22) is the corresponding rolling groove (26) that is set with multi-directional ball (25) down, and said multi-directional ball (25) is rolled in rolling groove (26).

6. heavy wares traverser accurate positioning device according to claim 1 is characterized in that: described vertical clamping mechanism (3) and/or horizontal clamping mechanism (4) are pneumatic pinch mechanism, hydraulic clamp mechanism, motorized clasping mechanism.

7. heavy wares traverser accurate positioning device according to claim 1 is characterized in that: described bearing plate (22) horizontally set two or more than two.

8. heavy wares traverser accurate positioning device according to claim 1 is characterized in that: the corresponding every bearing plate of described flexible restoring organ (21) and locating piece (23) (22) laterally and/or vertically installed two covers or more than two covers.

9. according to claim 1 or 9 described heavy wares traverser accurate positioning device, it is characterized in that: described flexible restoring organ (21) is metal spring Bringing-back mechanism, air bellow Bringing-back mechanism or rubber spring Bringing-back mechanism.

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