CN105834759B - A kind of gantry beam lifting gear of hydraulic control - Google Patents

Abstract

The invention discloses a kind of gantry beam lifting gears of hydraulic control, including vertically setting and two root posts parallel to each other, it is horizontal between two root posts to be equipped with crossbeam, each column is internally provided with hydraulic lift, control system is connected on hydraulic lift, the both ends of crossbeam are connected on two hydraulic lifts.Solve the problems, such as that leading screw bearing capacity existing for the existing gantry structure using lead screw transmission is insufficient, rigidity is poor.

Description

A hydraulically controlled gantry beam lifting device

technical field

The invention belongs to the technical field of heavy machinery and relates to a hydraulically controlled gantry beam lifting device.

Background technique

Column is an important structural component of CNC gantry milling machine and vertical lathe. Its structural characteristics have a great influence on the performance of the machine tool, mainly reflected in machining accuracy, vibration resistance, cutting efficiency, and service life. Therefore, the static and dynamic performance of the column structure is an important factor to determine the performance of the whole machine. With the development of my country's modern industry, the textile industry, mechanical processing, logistics, construction and other industries have an increasing demand for gantry structures. For example, the application of the gantry structure in the fiber laying and forming machine, the gantry milling machine in the machining industry, the gantry three-coordinate measuring instrument, etc., and the wide application of the gantry crane in the logistics industry and the construction industry. At present, most of the gantry structure equipment uses the screw transmission device to realize the lifting of the beam and other components relative to the column, especially the large machine tool equipment used in the manufacturing industry, such as the beam movable gantry milling machine, the gantry grinder, and the large vertical lathe. The bar drives the beam up and down the column. However, the screw drive also has some disadvantages. For example, when the beam of super-heavy equipment bears a large load, the bearing capacity of the screw is insufficient, which makes the rigidity of the gantry structure poor and the scope of use is small.

Contents of the invention

The object of the present invention is to provide a hydraulically controlled gantry beam lifting device, which solves the problems of insufficient screw bearing capacity and poor rigidity existing in the existing gantry structure that adopts screw drive.

The technical solution adopted in the present invention is a hydraulically controlled gantry beam lifting device, which includes two columns arranged vertically and parallel to each other, a horizontal beam is arranged between the two columns, and a hydraulic The lifting device is connected with a control system on the hydraulic lifting device, and the two ends of the beam are respectively connected to two hydraulic lifting devices.

The present invention is also characterized in that,

The structure of each upright column is as follows: including a hollow cylinder, the side a of the cylinder is provided with an opening a, and the opening a is connected with the upper and lower ends of the cylinder; the side b of the cylinder is provided with an opening b, and the side a The side b is the opposite side of the cylinder, and the bottom of the cylinder is provided with a base.

The openings a on the two cylinders are arranged facing each other, the opening a is set at the middle position of the side a of the cylinder, and the opening b is set at the middle position of the side b of the cylinder;

Each column is provided with four pairs of guide rails, the four pairs of guide rails are respectively located on the four sides of the column, and the pair of guide rails are respectively located at the two ends of one side of the column, and the four pairs of guide rails are all parallel to the height direction of the column , the two ends of the crossbeam just extend into the interior of the column from the opening a, and the two sides of each end of the crossbeam are respectively provided with grooves matching the edge of the opening a.

The hydraulic lifting device includes a layer of lifting mechanism A, and at least two layers of lifting mechanism B are arranged below the lifting mechanism A.

Wherein the structure of the lifting mechanism A is: including a platform a, a scissors mechanism a is provided below the platform a, the scissors mechanism a includes a connecting rod a and a connecting rod b, the middle part of the connecting rod a is hinged with the middle part of the connecting rod b; One end of rod a is provided with roller a, and one end of connecting rod b is provided with roller b;

The scissor mechanism a also includes a connecting rod c and a connecting rod d, the middle part of the connecting rod c is hinged to the middle part of the connecting rod d, one end of the connecting rod c is provided with a roller c, and one end of the connecting rod d is provided with a roller d;

Connecting rod e and connecting rod f are arranged parallel to each other horizontally between connecting rod a and connecting rod c. One end of connecting rod e is fixed to the middle of connecting rod a, and the other end of connecting rod e is fixed to the middle of connecting rod c. middle part;

One end of connecting rod f is fixedly connected to the other end of connecting rod a, the other end of connecting rod f is fixedly connected to the other end of connecting rod c, and the other end of connecting rod a and the other end of connecting rod c are both hinged to lifting mechanism B ;

There is a connecting rod g horizontally between the connecting rod b and the connecting rod d, and a pair of hydraulic cylinders a are arranged on the connecting rod g. The fixed ends of the two hydraulic cylinders a are respectively hinged on the two ends of the connecting rod g. The ends of the piston rods are respectively hinged to the two ends of the connecting rod e, and the two hydraulic cylinders a are supplied with oil through the oil pipe a;

Roller a cooperates with chute a at the bottom of platform a, roller c cooperates with chute b at the bottom of platform a, and chute a and chute b are located at both ends of platform a respectively;

Wherein the four sides of the platform a are respectively provided with a pair of sliders a matched with the guide rails.

The structure of each layer of lifting mechanism B is as follows: including platform b, the upper surface of platform b is provided with chute c and chute d, chute c and chute d are respectively located at the two ends of platform b, and the shape and size of platform b are the same as The shape and size of the platform a are the same, and a pair of sliders b matching the guide rails are respectively provided on the four sides of the platform b;

The scissors mechanism b is provided below the platform b, the scissors mechanism b includes a connecting rod h and a connecting rod I, the middle part of the connecting rod h is hinged with the middle part of the connecting rod I, one end of the connecting rod h is provided with a roller e, and the connecting rod I is provided with a roller f at one end;

The scissor mechanism b also includes a connecting rod J and a connecting rod k, the middle part of the connecting rod J and the middle part of the connecting rod k are hinged, one end of the connecting rod J is provided with a roller g, and one end of the connecting rod k is provided with a roller h;

The roller e is connected with the chute e opened at the bottom of the platform b, the roller g is connected with the chute f opened at the bottom of the platform b, and the chute e and the chute f are respectively located at both ends of the platform b;

There is a travel switch a at the chute c;

Connecting rod L and connecting rod m parallel to each other are arranged horizontally between connecting rod h and connecting rod J. One end of connecting rod L is fixed to the middle part of connecting rod h, and the other end of connecting rod L is fixed to the middle of connecting rod J. middle part;

One end of the connecting rod m is fixedly connected to the other end of the connecting rod h, and the other end of the connecting rod m is fixedly connected to the other end of the connecting rod J;

There is a connecting rod n horizontally between the connecting rod I and the connecting rod k, and a pair of hydraulic cylinders b are arranged on the connecting rod n. The fixed ends of the two hydraulic cylinders b are respectively hinged on the two ends of the connecting rod n. The ends of the piston rods are respectively hinged to the two ends of the connecting rod L, and the two hydraulic cylinders b are supplied with oil through the oil pipe b.

The connection mode between the lifting mechanisms B of the two adjacent layers is as follows: the roller f in the lifting mechanism B of the upper layer cooperates with the chute c in the lifting mechanism B of the lower layer, and the roller f in the lifting mechanism B of the upper layer h cooperates with the chute d in the lower lifting mechanism B, the other end of the connecting rod h in the upper lifting mechanism B and the other end of the connecting rod J in the upper lifting mechanism B are hinged to the lower lifting mechanism B the upper surface of the middle platform b;

Among at least two layers of lifting mechanisms B, the uppermost lifting mechanism B is connected to the lifting mechanism A. The specific connection method is: the roller b cooperates with the chute c in the lifting mechanism B, and the roller d cooperates with the chute in the lifting mechanism B d, the other end of the connecting rod a and the other end of the connecting rod c are both hinged on the upper surface of the platform b;

The lifting mechanism B located at the bottom is connected to the base, and the specific connection method is as follows: the upper surface of the base is provided with a chute g and a chute h, and a travel switch b is provided in the chute g;

The roller f in the lifting mechanism B cooperates with the chute g, and the roller h in the lifting mechanism B cooperates with the chute h; the other end of the connecting rod h and the other end of the connecting rod J in the lifting mechanism B are hinged on the base surface.

The control system includes a solenoid valve a and a hydraulic control valve. The two working oil ports of the solenoid valve a are respectively connected to the check valve c and the check valve d. The check valve c is connected to the operating end a of the hydraulic control valve and the check valve d Connect the operating port b of the hydraulic control valve, the working oil port A of the hydraulic control valve is respectively connected to the solenoid valve b and the speed control valve, and the solenoid valve b and the speed control valve are connected to the control oil circuit A that controls the movement of the lifting mechanism A and the control lifting mechanism B action control oil circuit B;

The pressure oil port of the solenoid valve a is connected to the motor and the oil tank in turn; the motor is also connected to the oil return port of the check valve a and the hydraulic control valve in turn, and the pressure oil port of the hydraulic control valve is respectively connected to the check valve b and the sequence valve a; The valve b is also connected with the solenoid valve b and the speed regulating valve respectively.

The control oil circuit A includes solenoid valve c, solenoid valve b and the speed control valve are connected to the pressure oil port of solenoid valve c, the two working ports of solenoid valve c are connected to two hydraulic cylinders a; the oil return port of solenoid valve c is connected to The working oil port B of the hydraulic control valve; the oil delivery port of the oil pipe a is connected with the two working oil ports of the solenoid valve c;

Control oil circuit B includes solenoid valve d and solenoid valve e, solenoid valve d and solenoid valve e are connected to sequence valve b at the same time, sequence valve b is connected to the pressure oil port of solenoid valve f, and the two working ports of solenoid valve f are connected to two The oil return port of the hydraulic cylinder b and the solenoid valve f is connected to the working oil port B of the hydraulic control valve; the oil delivery port of the oil pipe b is connected to the two working oil ports of the solenoid valve f.

The connection method of the control oil circuit B on the two adjacent lifting mechanisms B is as follows: the pipeline on the solenoid valve d and the pipeline on the solenoid valve e in the control oil circuit B in the lifting mechanism B on the upper layer first merge and then connect with The solenoid valve d and solenoid valve e in the control oil circuit B in the lifting mechanism B on the next level are connected.

The beneficial effect of the present invention is that the device includes a hydraulic lifting device, and the two ends of the beam are respectively connected with the hydraulic lifting device. The present invention uses hydraulic cylinder a and hydraulic cylinder b to provide driving force, realizes the lifting of the gantry beam, and greatly improves the height of the gantry. The bearing capacity of the column in the vertical direction simplifies the transmission structure of the machine tool, improves the stress condition of the structural components of the gantry, improves the machining accuracy of the machine tool, and makes the movement of the gantry more flexible and changeable.

Description of drawings

Fig. 1 is a structural representation of a hydraulically controlled gantry beam lifting device of the present invention;

Fig. 2 is the structural representation of column in Fig. 1;

Fig. 3 is a structural schematic diagram of the hydraulic lifting system in Fig. 1;

Fig. 4 is a schematic structural view of the lifting mechanism A in Fig. 3;

Fig. 5 is the bottom view of platform a among Fig. 3;

Fig. 6 is a structural schematic diagram of a scissor mechanism a in a hydraulically controlled gantry beam lifting device of the present invention;

Fig. 7 is a schematic structural view of the lifting mechanism B in Fig. 3;

Fig. 8 is the bottom view of platform b in Fig. 7;

Fig. 9 is a structural schematic diagram of the scissor mechanism b in a hydraulically controlled gantry beam lifting device of the present invention;

Figure 10 is a top view of the base in Figure 1;

Fig. 11 is a structural schematic diagram of a control system in a hydraulically controlled gantry beam lifting device of the present invention.

In the figure, 1. Beam,

2. Column, 2-1. Column, 2-2. Opening a, 2-3. Opening b, 2-4. Side a, 2-5. Side b, 2-6. Guide rail;

3. Hydraulic lifting device, 3-1. Lifting mechanism A, 3-1-1. Platform a, 3-1-2. Slider a, 3-1-3. Connecting rod a, 3-1-4. Rod b, 3-1-5. Connecting rod c, 3-1-6. Connecting rod d, 3-1-7. Connecting rod e, 3-1-8. Connecting rod f, 3-1-9. Rod g, 3-1-10. Roller a, 3-1-11. Roller b, 3-1-12. Roller c, 3-1-13. Roller d, 3-1-14. Hydraulic cylinder a, 3 -1-15. Oil pipe a, 3-1-16. Chute a, 3-1-17. Chute b;

3-2. Lifting mechanism B, 3-2-1. Platform b, 3-2-2. Chute c, 3-2-3. Chute d, 3-2-4. Hydraulic cylinder b, 3-2 -5. Slider b, 3-2-6. Connecting rod h, 3-2-7. Connecting rod I, 3-2-8. Connecting rod J, 3-2-9. Connecting rod k, 3-2 -10. Connecting rod L, 3-2-11. Connecting rod m, 3-2-12. Connecting rod n, 3-2-13. Roller e, 3-2-14. Roller f, 3-2-15 .Roller g, 3-2-16. Roller h, 3-2-17. Oil pipe b, 3-2-18. Travel switch a, 3-2-19. Chute e, 3-2-20. Chute f;

4. Base, 4-1. Chute g, 4-2. Chute h, 4-3. Travel switch b;

5. Fuel tank, 6. Motor, 7. One-way valve a, 8. Hydraulic control valve, 9. One-way valve b, 10. Sequence valve a, 11. Solenoid valve a, 12. One-way valve c, 13. Single Directional valve d, 14. Solenoid valve b, 15. Speed control valve, 16. Solenoid valve c, 17. Solenoid valve d, 18. Solenoid valve e, 19. Sequence valve b, 20. Solenoid valve f, 21. Beam concave groove.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

A hydraulically controlled gantry beam lifting device of the present invention has a structure as shown in Figure 1, including two columns 2 arranged vertically and parallel to each other, a beam 1 is horizontally arranged between the two columns 2, and each column 2 A hydraulic lifting device 3 is arranged inside, and a control system is connected to the hydraulic lifting device 3 , and the two ends of the beam 1 are respectively connected to two hydraulic lifting devices 3 .

The structure of each column 2 is as shown in Figure 2: it includes a hollow cylinder 2-1, and the side a2-4 of the cylinder 2-1 is provided with an opening a2-2, and the opening a2-2 is connected to the cylinder 2-1. The upper and lower ends are connected; the side b2-5 of the cylinder 2-1 is provided with an opening b2-3, the side a2-4 and the side b2-5 are opposite sides of the cylinder 2-1, and the side of the cylinder 2-1 The base 4 is provided at the bottom.

The openings a2-2 on the two cylinders 2-1 are set facing each other, the opening a2-2 is set at the middle position of the side a2-4 of the (column 2-1), and the opening b2-3 is set at the (column 2-1) 1) The middle position of side b2-5;

Wherein each cylinder 2-1 (vertically) is provided with four pairs of guide rails 2-6, and four pairs of guide rails 2-6 are respectively positioned on the four sides of cylinder 2-1 (that is, totally set on the cylinder 2-1 There are 8 guide rails 2-6), a pair of guide rails 2-6 are respectively located at both ends of a side of the column 2-1, four pairs of guide rails 2-6 are all parallel to the height direction of the column 2-1, and the beam 1 The two ends just extend into the interior of the column 2-1 from the opening a2-2, and the two sides of each end of the beam 1 (both ends in total) are respectively provided with a beam groove 21 matching the edge of the opening a2-2.

As shown in FIG. 3 , the hydraulic lifting device 3 includes a layer of lifting mechanism A3-1, and at least two layers of lifting mechanism B3-2 are arranged below the lifting mechanism A3-1.

As shown in Figure 4-6, the structure of the lifting mechanism A3-1 is: including a platform a3-1-1, a scissor mechanism a is provided under the platform a3-1-1, and the scissor mechanism a includes a connecting rod a3-1 -3 and connecting rod b3-1-4, the middle part of connecting rod a3-1-3 is hinged with the middle part of connecting rod b3-1-4; one end of connecting rod a3-1-3 is provided with roller a3-1-10, One end of the connecting rod b3-1-4 is provided with a roller b3-1-11;

The scissor mechanism a also includes connecting rod c3-1-5 and connecting rod d3-1-6, the middle part of connecting rod c3-1-5 is hinged with the middle part of connecting rod d3-1-6, and connecting rod c3-1-5 One end of the connecting rod is provided with a roller c3-1-12, and one end of the connecting rod d3-1-6 is provided with a roller d3-1-13;

Connecting rod e3-1-7 and connecting rod f3-1-8 parallel to each other are arranged horizontally between connecting rod a3-1-3 and connecting rod c3-1-5, and one end of connecting rod e3-1-7 is fixed In the middle of the connecting rod a3-1-3, the other end of the connecting rod e3-1-7 is fixedly connected to the middle of the connecting rod c3-1-5;

One end of connecting rod f3-1-8 is fixedly connected to the other end of connecting rod a3-1-3, the other end of connecting rod f3-1-8 is fixedly connected to the other end of connecting rod c3-1-5, connecting rod a3 The other end of -1-3 and the other end of the connecting rod c3-1-5 are hinged with the lifting mechanism B3-2;

Connecting rod g3-1-9 is arranged horizontally between connecting rod b3-1-4 and connecting rod d3-1-6, and a pair of hydraulic cylinders a3-1-14 are arranged on connecting rod g3-1-9, two hydraulic cylinders The fixed ends of the cylinder a3-1-14 are respectively hinged to the two ends of the connecting rod g3-1-9, and the ends of the piston rods of the two hydraulic cylinders a3-1-14 are respectively hinged to the two ends of the connecting rod e3-1-7 , the two hydraulic cylinders a3-1-14 supply oil through the oil pipe a3-1-15 (both ends of the oil pipe a3-1-15 are respectively connected to a hydraulic cylinder a3-1-14);

The roller a3-1-10 cooperates with the chute a3-1-16 provided at the bottom of the platform a3-1-1, and the roller c3-1-12 cooperates with the chute b3-1-17 provided at the bottom of the platform a3-1-1 Cooperate, the chute a3-1-16 and the chute b3-1-17 are respectively located at the two ends of the platform a3-1-1;

The four sides of the platform a3-1-1 are respectively provided with a pair of sliders a3-1-2 matched with the guide rails 2-6 (there are 8 sliders a3-1-2 in total).

The structure of each layer of lifting mechanism B3-2 is shown in Figures 7 and 8: it includes a platform b3-2-1, and the upper surface of the platform b3-2-1 is provided with a chute c3-2-2 and a chute d3-2- 3. The chute c3-2-2 and the chute d3-2-3 are respectively located at the two ends of the platform b3-2-1, and the shape and size of the platform b3-2-1 are the same as those of the platform a3-1-1. Similarly, a pair of slide blocks b3-2-5 cooperating with the guide rail 2-6 are respectively provided on the four sides of the platform b3-2-1 (a total of 8 slide blocks b3-2-5 and one-to-one with the guide rail 2-6 Correspondingly, the slider a3-1-2 is located directly above the slider b3-2-5);

Below the platform b3-2-1, a scissor mechanism b is provided, as shown in Figure 9, the scissor mechanism b includes a connecting rod h3-2-6 and a connecting rod I3-2-7, and the connecting rod h3-2-6 The middle part is hinged with the middle part of the connecting rod I3-2-7, one end of the connecting rod h3-2-6 is provided with a roller e3-2-13, and one end of the connecting rod I3-2-7 is provided with a roller f3-2-14;

The scissor mechanism b also includes connecting rod J3-2-8 and connecting rod k3-2-9, the middle part of connecting rod J3-2-8 and the middle part of connecting rod k3-2-9 are hinged, and connecting rod J3-2-8 One end of the connecting rod is provided with a roller g3-2-15, and one end of the connecting rod k3-2-9 is provided with a roller h3-2-16;

The roller e3-2-13 is connected with the chute e3-2-19 at the bottom of the platform b3-2-1, and the roller g3-2-15 is connected with the chute f3-2-1 at the bottom of the platform b3-2-1. 20 connection, the chute e3-2-19 and the chute f3-2-20 are respectively located at the two ends of the platform b3-2-1;

There is a stroke switch a3-2-18 at the chute c3-2-2 (for controlling the solenoid valve d17, solenoid valve e18 and solenoid valve f20);

Connecting rod L3-2-10 and connecting rod m3-2-11 parallel to each other are arranged horizontally between connecting rod h3-2-6 and connecting rod J3-2-8, and one end of connecting rod L3-2-10 is fixed In the middle of the connecting rod h3-2-6, the other end of the connecting rod L3-2-10 is fixedly connected to the middle of the connecting rod J3-2-8;

One end of the connecting rod m3-2-11 is fixedly connected to the other end of the connecting rod h3-2-6, and the other end of the connecting rod m3-2-11 is fixedly connected to the other end of the connecting rod J3-2-8;

Connecting rod n3-2-12 is arranged horizontally between connecting rod I3-2-7 and connecting rod k3-2-9, and a pair of hydraulic cylinder b3-2-4 is arranged on connecting rod n3-2-12, two hydraulic cylinders The fixed ends of the cylinder b3-2-4 are respectively hinged to the two ends of the connecting rod n3-2-12, and the ends of the piston rods of the two hydraulic cylinders b3-2-4 are respectively hinged to the two ends of the connecting rod L3-2-10 , the two hydraulic cylinders b3-2-4 are supplied with oil through the oil pipe b3-2-17 (both ends of the oil pipe b3-2-17 are respectively connected to a hydraulic cylinder b3-2-4).

Wherein the connection mode between two adjacent layers of lifting mechanisms B3-2 is: the roller f3-2-14 in the lifting mechanism B3-2 of the upper layer and the chute c3-2- in the lifting mechanism B3-2 of the lower layer 2 Cooperate, the roller h3-2-16 in the lifting mechanism B3-2 of the upper layer cooperates with the chute d3-2-3 in the lifting mechanism B3-2 of the lower layer, and the connecting rod in the lifting mechanism B3-2 of the upper layer The other end of h3-2-6 and the other end of the connecting rod J3-2-8 in the upper lifting mechanism B3-2 are hinged on the upper surface of the platform b3-2-1 in the lower lifting mechanism B3-2;

In the multi-layer lifting mechanism B3-2, the uppermost lifting mechanism B3-2 is connected to the lifting mechanism A3-1. The specific connection method is: the roller b3-1-11 and the chute c3-1 in the lifting mechanism B3-2 2-2 cooperation (the roller b3-1-11 rolls in the chute c3-2-2), the roller d3-1-13 cooperates with the chute d3-2-3 in the lifting mechanism B3-2 (the roller d3-1 -13 rolls in the chute d3-2-3), the other end of the connecting rod a3-1-3 and the other end of the connecting rod c3-1-5 are hinged on the upper surface of the platform b3-2-1;

The lifting mechanism B3-2 located at the bottom is connected to the base 4. The specific connection method is as follows: as shown in Figure 10, the upper surface of the base 4 is provided with chute g4-1 and chute h4-2, chute g4 -1 is equipped with a travel switch b4-3 (for controlling the lifting mechanism B3-2 of this floor);

The roller f3-2-14 in the lifting mechanism B3-2 cooperates with the chute g4-1 (the roller f3-2-14 slides in the chute g4-1), and the roller h3-2-16 in the lifting mechanism B3-2 Cooperate with the chute h4-2 (the roller h3-2-16 slides in the chute h4-2); the other end of the connecting rod h3-2-6 in the lifting mechanism B3-2 (the one without the roller e3-2-13 One end), the other end of connecting rod J3-2-8 (an end that does not adorn roller g3-2-15) are all hinged on the upper surface of base 4.

Both ends of the beam 1 are fixed on the platform a3-1-1 by bolts.

As shown in Figure 11, the control system includes a solenoid valve a11 and a hydraulic control valve 8. The two working oil ports of the solenoid valve a11 are respectively connected to the one-way valve c12 and the one-way valve d13, and the one-way valve c12 is connected to the operation of the hydraulic control valve 8. Terminal a, one-way valve d13 are connected to operating terminal b of hydraulic control valve 8, working oil port A of hydraulic control valve 8 is respectively connected to solenoid valve b14 and speed regulating valve 15, and solenoid valve b14 and speed regulating valve 15 are simultaneously connected to control the lifting mechanism The control oil circuit A for the action of A3-1 and the control oil circuit B for the action of the lifting mechanism B3-2 (that is, the pipeline connected to the working oil port A of the hydraulic control valve 8 respectively passes through the two pipelines of the speed regulating valve 15 and the solenoid valve b14 Adjust, and then merge into one pipeline to connect with control oil circuit A and control oil circuit B respectively).

The pressure oil port of the solenoid valve a11 is connected to the motor 6 and the oil tank 5 in turn; the motor 6 is also connected to the oil return port of the check valve a7 and the hydraulic control valve 8 in turn, and the pressure oil port of the hydraulic control valve 8 is respectively connected to the check valve b9 and the sequence Valve a10 (internal control and external leakage type); one-way valve b9 is also connected with solenoid valve b14 and speed control valve 15 respectively (the pipeline connected with one-way valve b9 and the pipeline connected with the working oil port A of hydraulic control valve 8 are merged and then connected respectively Solenoid valve b14 and speed control valve 15).

Among them, the control oil circuit A includes solenoid valve c16, solenoid valve b14 (upper pipeline) and speed regulating valve 15 (upper pipelines are merged at the same time) to connect the pressure oil port of solenoid valve c16, and the two working oils of solenoid valve c16 The port is connected to two hydraulic cylinders a3-1-14; the oil return port of the solenoid valve c16 is connected to the working oil port B of the hydraulic control valve 8; the oil delivery port of the oil pipe a3-1-15 (the oil delivery port is opened on the oil pipe a3-1 The middle part of -15) is connected with the two working oil ports of the solenoid valve c16;

The control oil circuit B includes solenoid valve d17 and solenoid valve e18. Solenoid valve d17 and solenoid valve e18 are connected to sequence valve b19 (internal control and external leakage type) at the same time. Sequence valve b19 is connected to the pressure oil port of solenoid valve f20. A working oil port is connected to two hydraulic cylinders b3-2-4, and the oil return port of the solenoid valve f20 is connected to the working oil port B of the hydraulic control valve 8; the oil delivery port of the oil pipe b3-2-17 (the oil delivery port is set on the The middle part of b3-2-17) is connected with the two working oil ports of the solenoid valve f20.

Among them, hydraulic control valve 8 is a two-position four-way hydraulic control valve; solenoid valve a11, solenoid valve c16, and solenoid valve f20 are two-position four-way solenoid valves; solenoid valve b14, solenoid valve d17, and solenoid valve e18 are two-position two-way The electromagnetic valve.

The connection method of the control oil circuit B on the two adjacent layers of lifting mechanism B3-2 is: the pipeline on the solenoid valve d17 and the tube on the solenoid valve e18 in the control oil circuit B of the upper layer of lifting mechanism B3-2 The roads merge first and then connect with the electromagnetic valve d17 and the electromagnetic valve e18 in the control oil circuit B in the lifting mechanism B3-2 on the next floor.

The working process of a hydraulically controlled gantry beam lifting device of the present invention is as follows: the motor 6 starts, when the solenoid valve a11 is not connected, the hydraulic oil→motor 6→check valve a7→directly enters the oil tank 5, which also affects the oil circuit Protected; the solenoid valve a11 is electrically activated, the switch of the solenoid valve a11 is turned on, the hydraulic oil flows from the motor 6 → solenoid valve a11 → one-way valve d13 → the left side of the hydraulic control valve 8, and the oil on the right side of the hydraulic control valve 8 passes through the one-way The valve c12 returns to the oil tank 5, and the left side of the hydraulic control valve 8 is connected; the hydraulic oil passes through the motor 6→one-way valve a7→hydraulic control valve 8→solenoid valve b14→solenoid valve c16→simultaneously enters two hydraulic cylinders a3-1- In the left chamber of 14, two hydraulic cylinders a3-1-14 act, the roller b3-1-11 moves, the travel switch a3-2-18 is opened, and the solenoid valve d17, solenoid valve e18, solenoid valve f20 are energized (solenoid valve d17 closed, solenoid valve e18 open, solenoid valve f20 transposition). Since the pressure of the hydraulic oil at the outlet of the motor 6 is low during the ascent, the sequence valve 10 is closed, and the return oil of the two hydraulic cylinders a3-1-14 passes through the solenoid valve c16 → one-way valve b9 → solenoid valve b14 → solenoid valve d17 and enters the two hydraulic cylinders respectively. The left cavity of the first hydraulic cylinder a3-1-14 and the two hydraulic cylinders a3-1-14 respectively form a differential connection to realize rapid ascent. When the rising height is sufficient, the solenoid valve a11 is powered off, returns to the left side, and the oil supply of the motor 6 stops; to realize slow adjustment, only need to connect the solenoid valve b14, the solenoid valve b14 is energized and closed, and the speed control valve 15 is connected. The outlet pressure of the motor 6 increases, the sequence valve 10 is connected, the return oil of the two hydraulic cylinders a3-1-14 passes through the solenoid valve c16 → sequence valve 10 → oil tank 5, and the rising speed of the platform a3-1-1 decreases.

If the height is insufficient, the platform a3-1-1 continues to move until it reaches the limit position of the two hydraulic cylinders a3-1-14; the motor 6 continues to supply oil, and the hydraulic oil pressure in the two hydraulic cylinders a3-1-14 increases , the sequence valve b19 is connected, oil supply: hydraulic oil→sequence valve b19→solenoid valve f20→into the left cavity of hydraulic cylinder b3-2-4, hydraulic cylinder b3-2-4 moves, platform b3-2-1 rises. Oil return: The hydraulic oil pressure at the outlet of motor 6 is low during the rising stage, the sequence valve a10 is closed, and the hydraulic oil enters the hydraulic cylinder through the solenoid valve f20→check valve b9→solenoid valve b14→solenoid valve e18→sequence valve b19→solenoid valve f20 b3-2-4, the two hydraulic cylinders b3-2-4 realize differential connection respectively to realize rapid ascent. When the rising height is sufficient, the solenoid valve a11 is powered off, the hydraulic control valve 8 returns to the right side, and the oil supply of the motor 6 stops. To realize slow speed adjustment, just turn on the solenoid valve b14, the solenoid valve b14 is powered off, and the speed is adjusted. The valve 15 is connected, the outlet pressure of the motor 6 increases, the sequence valve a10 is connected, the return oil of the hydraulic cylinder b3-2-4 passes through the solenoid valve c16 → the sequence valve a10 → the oil tank 5, and the rising speed of the platform b3-2-1 decreases.

The descending process of the hydraulic system is basically similar to the ascending process. The execution process also starts from the hydraulic cylinder a3--1-14. First, the solenoid valve c16 is energized, and the solenoid valve c16 changes direction. Then the solenoid valve a11 is connected, the solenoid valve a11 is powered, and the switch of the solenoid valve a11 is turned on. Hydraulic oil from motor 6 → solenoid valve a11 → one-way valve d13 → left side of hydraulic control valve 8, oil on the right side of hydraulic control valve 8 returns to oil tank 5 through one-way valve c12, and the left side of hydraulic control valve 8 is connected; hydraulic oil Through motor 6→one-way valve a7→hydraulic control valve 8→solenoid valve b14→solenoid valve c16→simultaneously enter the right cavity of two hydraulic cylinders a3-1-14 (the principle of rising and falling to realize differential is the same). When the hydraulic cylinder a3-1-14 returns to its original position, the travel switch a3-2-18 is closed, and the solenoid valves d17, solenoid valve e18, and solenoid valve f20 are disconnected (solenoid valve d17 is closed, solenoid valve e18 is connected , Solenoid valve f20 reversing), the motor 6 continues to supply oil, the oil pressure in the two hydraulic cylinders a3-1-14 increases, and the sequence valve b19 is connected. Hydraulic oil→sequence valve b19→solenoid valve f20→enter the right chambers of two hydraulic cylinders b3-2-4 respectively. (The hydraulic cylinder b3-2-4 can also achieve differential connection during the descending process, which is similar to its ascending process.) During the descending process, when it reaches the required position, the solenoid valve a11 is powered off, the hydraulic control valve 8 returns to the right side, and the motor 6 Oil supply is stopped; if slow down is to be achieved, similar to the method of slow up, only need to connect solenoid valve b14, solenoid valve b14 is closed, speed regulating valve 15 is connected, motor 6 outlet pressure increases, sequence valve a10 is connected The oil return line is connected to the oil tank 5, the oil return of the hydraulic cylinder b3-2-4 passes through the solenoid valve f20 → the sequence valve a10 → the oil tank 5, the descending speed of the platform b3-2-1 decreases, and the above platform a3-1-1 and During the rising and falling process of the platform b3-2-1, the crossbeam 1 will rise or fall accordingly, thus realizing the lifting process of the gantry crossbeam.

Claims (7)

1. A hydraulically controlled gantry beam lifting device, characterized in that: comprise two columns (2) arranged vertically and parallel to each other, and a crossbeam (1) is horizontally provided between the two columns (2), each A hydraulic lifting device (3) is arranged inside the root column (2), and a control system is connected to the hydraulic lifting device (3), and the two ends of the beam (1) are respectively connected to two hydraulic lifting devices (3); The hydraulic lifting device (3) includes a layer of lifting mechanism A (3-1), and at least two layers of lifting mechanism B (3-2) are arranged below the lifting mechanism A (3-1); The structure of the lifting mechanism A (3-1) is: comprising a platform a (3-1-1), a scissors mechanism a is provided below the platform a (3-1-1), and the scissors mechanism a includes Connecting rod a (3-1-3) and connecting rod b (3-1-4), the middle part of connecting rod a (3-1-3) is hinged with the middle part of connecting rod b (3-1-4); One end of rod a (3-1-3) is provided with roller a (3-1-10), and one end of connecting rod b (3-1-4) is provided with roller b (3-1-11); The scissor mechanism a also includes connecting rod c (3-1-5) and connecting rod d (3-1-6), the middle part of connecting rod c (3-1-5) and connecting rod d (3-1 -6) is hinged in the middle, one end of the connecting rod c (3-1-5) is provided with a roller c (3-1-12), and one end of the connecting rod d (3-1-6) is provided with a roller d (3- 1-13); Connecting rod e(3-1-7) and connecting rod f(3-1- 8), one end of the connecting rod e (3-1-7) is affixed to the middle of the connecting rod a (3-1-3), and the other end of the connecting rod e (3-1-7) is affixed to the connecting rod c the middle of (3-1-5); One end of the connecting rod f (3-1-8) is affixed to the other end of the connecting rod a (3-1-3), and the other end of the connecting rod f (3-1-8) is affixed to the connecting rod c The other end of (3-1-5), the other end of connecting rod a (3-1-3), and the other end of connecting rod c (3-1-5) are all hinged with lifting mechanism B (3-2); A connecting rod g (3-1-9) is horizontally arranged between the connecting rod b (3-1-4) and the connecting rod d (3-1-6), and on the connecting rod g (3-1-9) There is a pair of hydraulic cylinders a (3-1-14), the fixed ends of the two hydraulic cylinders a (3-1-14) are respectively hinged on the two ends of the connecting rod g (3-1-9), the two hydraulic cylinders The piston rod ends of a(3-1-14) are respectively hinged on the two ends of the connecting rod e(3-1-7), and the two hydraulic cylinders a(3-1-14) pass through the oil pipe a(3-1- 15) oil supply; The roller a (3-1-10) cooperates with the chute a (3-1-16) provided at the bottom of the platform a (3-1-1), and the roller c (3-1-12) cooperates with the chute provided at the bottom of the platform a (3-1-1). The chute b (3-1-17) at the bottom of a (3-1-1) cooperates, and the chute a (3-1-16) and the chute b (3-1-17) are respectively located on the platform a (3- 1-1) both ends; A pair of sliders a (3-1-2) are correspondingly provided on the four sides of the platform a (3-1-1); The control system includes a solenoid valve a (11) and a hydraulic control valve (8). The two working oil ports of the solenoid valve a (11) are respectively connected to the check valve c (12) and the check valve d (13). The directional valve c (12) is connected to the operating port a of the hydraulic control valve (8), the one-way valve d (13) is connected to the operating port b of the hydraulic control valve (8), and the working oil port A of the hydraulic control valve (8) is respectively connected to Solenoid valve b (14) and speed regulating valve (15), solenoid valve b (14) and speed regulating valve (15) are simultaneously connected to the control oil circuit A and the control lifting mechanism that controls the movement of the lifting mechanism A (3-1) B (3-2) the control oil circuit B of the action; The pressure oil port of the electromagnetic valve a (11) is connected to the motor (6) and the oil tank (5) in sequence; the motor (6) is also connected to the oil return port of the one-way valve a (7) and the hydraulic control valve (8) in sequence, The pressure port of the hydraulic control valve (8) is respectively connected to the check valve b (9) and the sequence valve a (10); the check valve b (9) is also connected to the solenoid valve b (14) and the speed control valve (15) connect. 2. A hydraulically controlled gantry beam lifting device according to claim 1, characterized in that: the structure of each column (2) is: a hollow column (2-1), a column (2 -1) is provided with an opening a (2-2) on the side a (2-4), and the opening a (2-2) is connected with the upper and lower ends of the cylinder (2-1); the cylinder (2 -1) The side b (2-5) is provided with an opening b (2-3), the side a (2-4) and the side b (2-5) are opposite sides of the column (2-1), A base (4) is provided at the bottom of the cylinder (2-1). 3. A hydraulically controlled gantry crossbeam lifting device according to claim 2, characterized in that: the openings a (2-2) on the two columns (2-1) are opposite to each other, and the opening a ( 2-2) set at the middle position of side a (2-4), and set the opening b (2-3) at the middle position of side b (2-5); Each said cylinder (2-1) is provided with four pairs of guide rails (2-6), and four pairs of guide rails (2-6) are respectively positioned on the four sides of cylinder (2-1), and a pair of guide rails ( 2-6) respectively located at both ends of one side of the column (2-1), the four pairs of guide rails (2-6) are all parallel to the height direction of the column (2-1), the two beams (1) The end just extends into the inside of the cylinder (2-1) from the opening a (2-2), and the two sides of each end of the beam (1) are respectively provided with a beam groove matching the edge of the opening a (2-2) (twenty one). 4. A hydraulically controlled gantry beam lifting device according to claim 1, characterized in that: the structure of the lifting mechanism B (3-2) on each floor is: comprising a platform b (3-2-1), The upper surface of platform b (3-2-1) is provided with chute c (3-2-2) and chute d (3-2-3), chute c (3-2-2) and chute d (3-2-3) are respectively located at both ends of platform b (3-2-1), and the shape and size of platform b (3-2-1) are the same as those of platform a (3-1-1). , the four sides of the platform b (3-2-1) are respectively provided with a pair of sliders b (3-2-5) matched with the guide rails (2-6); The scissor mechanism b is provided below the platform b (3-2-1), and the scissor mechanism b includes a connecting rod h (3-2-6) and a connecting rod I (3-2-7). The middle part of the bar h (3-2-6) is hinged with the middle part of the connecting rod I (3-2-7), and one end of the connecting rod h (3-2-6) is provided with a roller e (3-2-13), One end of connecting rod I (3-2-7) is provided with roller f (3-2-14); Described scissor mechanism b also comprises connecting rod J (3-2-8) and connecting rod k (3-2-9), the middle part of connecting rod J (3-2-8) and connecting rod k (3-2 -9) is hinged in the middle, one end of the connecting rod J (3-2-8) is provided with a roller g (3-2-15), and one end of the connecting rod k (3-2-9) is provided with a roller h (3- 2-16); The roller e (3-2-13) is connected with the chute e (3-2-19) provided at the bottom of the platform b (3-2-1), and the roller g (3-2-15) is connected with the chute provided on the platform b (3-2-1) The chute f (3-2-20) at the bottom is connected, and the chute e (3-2-19) and the chute f (3-2-20) are respectively located on the platform b (3-2 -1) at both ends; chute c (3-2-2) is provided with travel switch a (3-2-18); Connecting rod L(3-2-10) and connecting rod m(3-2-11) parallel to each other are arranged horizontally between connecting rod h(3-2-6) and connecting rod J(3-2-8) , one end of the connecting rod L (3-2-10) is affixed to the middle of the connecting rod h (3-2-6), and the other end of the connecting rod L (3-2-10) is affixed to the connecting rod J (3 -2-8) in the middle; One end of connecting rod m(3-2-11) is fixedly connected to the other end of connecting rod h(3-2-6), and the other end of connecting rod m(3-2-11) is fixedly connected to connecting rod J(3 -2-8) the other end; Connecting rod n (3-2-12) is arranged horizontally between connecting rod I (3-2-7) and connecting rod k (3-2-9), and connecting rod n (3-2-12) is provided with a For the hydraulic cylinder b (3-2-4), the fixed ends of the two hydraulic cylinders b (3-2-4) are respectively hinged at both ends of the connecting rod n (3-2-12), and the two hydraulic cylinders b ( 3-2-4) The ends of the piston rod are respectively hinged on the two ends of the connecting rod L (3-2-10), and the two hydraulic cylinders b (3-2-4) pass through the oil pipe b (3-2-17) Fuel. 5. A hydraulically controlled gantry beam lifting device according to claim 4, characterized in that: the connection mode between the lifting mechanisms B (3-2) on two adjacent floors is: the lifting mechanism B on the upper layer The roller f (3-2-14) in (3-2) cooperates with the chute c (3-2-2) in the lifting mechanism B (3-2) of the next layer, and the lifting mechanism B (3-2) of the upper layer The roller h (3-2-16) in -2) cooperates with the chute d (3-2-3) in the lifting mechanism B (3-2) of the next layer, and the lifting mechanism B (3-2) of the upper layer The other end of the connecting rod h (3-2-6) in ) and the other end of the connecting rod J (3-2-8) in the upper layer of lifting mechanism B (3-2) are all hinged on the lower layer of lifting mechanism B ( 3-2) the upper surface of platform b (3-2-1); In at least two layers of lifting mechanisms B (3-2), the uppermost lifting mechanism B (3-2) is connected with the lifting mechanism A (3-1), and the specific connection method is: the roller b (3-1 -11) Cooperate with the chute c (3-2-2) in the lifting mechanism B (3-2), and the roller d (3-1-13) cooperates with the chute d ( 3-2-3) fit, the other end of the connecting rod a (3-1-3) and the other end of the connecting rod c (3-1-5) are both hinged on the upper surface of the platform b (3-2-1) ; The lifting mechanism B (3-2) located at the bottom is connected to the base (4), and the specific connection method is: the upper surface of the base (4) is provided with a slide groove g (4-1) and a slide Slot h (4-2), chute g (4-1) is provided with travel switch b (4-3); The roller f (3-2-14) in the lifting mechanism B (3-2) cooperates with the chute g (4-1), and the roller h (3-2-16) in the lifting mechanism B (3-2) ) cooperates with the chute h (4-2); the other end of the connecting rod h (3-2-6) and the other end of the connecting rod J (3-2-8) in the lifting mechanism B (3-2) All are hinged on the upper surface of the base (4). 6. A hydraulically controlled gantry beam lifting device according to claim 4, characterized in that: the control oil circuit A includes a solenoid valve c (16), a solenoid valve b (14) and a speed regulating valve (15) Connect the pressure port of solenoid valve c (16), the two working ports of solenoid valve c (16) are connected to the two hydraulic cylinders a (3-1-14); the oil return port of solenoid valve c (16) Connect to the working oil port B of the hydraulic control valve (8); the oil delivery port of the oil pipe a (3-1-15) is connected to the two working oil ports of the electromagnetic valve c (16); The control oil circuit B includes solenoid valve d (17) and solenoid valve e (18), solenoid valve d (17) and solenoid valve e (18) are connected to sequence valve b (19) at the same time, and sequence valve b (19) is connected to The pressure port of the solenoid valve f(20), the two working ports of the solenoid valve f(20) are connected to two hydraulic cylinders b(3-2-4), and the oil return port of the solenoid valve f(20) is connected to the hydraulic control The working oil port B of the valve (8); the oil delivery port of the oil pipe b (3-2-17) is connected with the two working oil ports of the electromagnetic valve f (20). 7. A hydraulically controlled gantry beam lifting device according to claim 6, characterized in that: the connection mode of the control oil circuit B on the two adjacent layers of lifting mechanisms B (3-2) is: the upper layer of lifting In the mechanism B (3-2), the pipeline on the solenoid valve d (17) and the pipeline on the solenoid valve e (18) in the control oil circuit B first merge and then connect with the next layer of lifting mechanism B (3-2) The solenoid valve d(17) and solenoid valve e(18) in the middle control oil circuit B are connected.