CN103395716B - Vertical lift device - Google Patents

Abstract

The invention discloses a vertical lifting device, comprising a roller support, which is used to carry a wire saw mechanism, connected with a lifting drive mechanism for controlling the lifting movement of the roller support through a screw mechanism, and the roller support It is also connected with a balance oil cylinder mechanism for counteracting the gravity loaded by the roller support. The vertical lifting device of the present invention, in addition to connecting the roller support for carrying the wire saw mechanism with the lifting drive mechanism through the screw mechanism, is also provided with a balance oil cylinder mechanism for offsetting the gravity loaded by the roller support. Supporting the gravity of the roller support and its load, the load of the screw mechanism will be almost zero, thereby greatly extending the service life of the screw, ensuring the reliability and safety of the lifting movement, and reducing the operation of the machine equipment. and maintenance costs.

Description

vertical lifting device

technical field

The invention relates to the field of wire saw machine control, in particular to a vertical lifting device for a wire saw machine.

Background technique

At present, most domestic stone processing factories use sand saws, frame saws or circular saws to cut granite blocks into plates. The main disadvantages of sand saw processing methods are: large equipment, complex structure, large power consumption, and inconvenient installation and operation; In the cutting process, a large amount of steel sand is used, which causes environmental pollution; the cutting speed is slow and the production efficiency is low. Because the sawing process of the frame saw is discontinuous, the sawing speed is relatively slow, while the sawing depth of the circular saw machine is limited by the diameter of the saw blade, which generally cannot exceed half of the diameter of the saw blade. The combined wire saw machine has a simple structure, occupies a small space, consumes less power, and greatly reduces the waste generated during the production process. The cutting speed is fast and the production efficiency is high. The combined wire saw machine has a tendency to replace the sand saw.

The combined wire saw machine can cut many or even dozens of stone slabs at a time. Since multiple boards need to be cut at one time, the combined wire saw machine must drive multiple wire saws at a time, and each wire saw needs to be tensioned independently. The more the wire saws, the greater the load of the entire lifting device. Generally, the load of the lifting device of a combined wire saw machine with 40 ropes adds up to more than 20 tons. If all the loads are borne by the screw, on the one hand It will sharply accelerate the wear of the lead screw, and on the other hand, it will increase the unstable factors in the operation of the machine.

Contents of the invention

The object of the present invention is to provide a vertical lifting device with simple structure and reliable operation, so as to solve the technical problems of short service life and low reliability of the lead screw of the existing elevator lifting device.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows

A vertical lifting device, including a roller support, the roller support is used to carry the wire saw mechanism, the roller support is connected with a lifting drive mechanism for controlling the lifting movement of the roller support through a screw mechanism, and the roller support is also connected A balance cylinder mechanism that counteracts the weight of the roller support.

Further, the balance cylinder mechanism includes a hydraulic system, a cylinder rod and a counterweight valve, and the counterweight valve is used to control the output oil pressure of the hydraulic system to balance the gravity loaded by the roller support.

Further, the vertical lifting device includes two sets of roller supports arranged in parallel at intervals, and each set of roller supports is correspondingly provided with a balance oil cylinder mechanism and a lead screw mechanism.

Further, the lifting drive mechanism includes a motor, and the motor is connected to two reducers via a universal joint; wherein, one reducer is connected to a screw mechanism corresponding to a roller support, and the other reducer is connected to a corresponding roller support The lead screw mechanism is used to separately drive the roller bearings connected with the lead screw mechanism for lifting movement.

Further, the lead screw mechanism includes a lead screw, and a bearing mounting plate and a bearing are arranged between the lead screw and the roller support.

Further, the bearing is a thrust ball bearing.

Further, a protective cover is provided outside the lead screw.

Further, the roller support includes a main body and a lead screw nut that is arranged on the main body and matches with the lead screw, and the main body is also provided with an oil cylinder rod joint for connecting the oil cylinder rod.

Further, an oil cylinder pressure plate is fixed on the body, and an accommodation cavity is formed between the oil cylinder pressure plate and the body, one end of the oil cylinder rod joint is clamped in the accommodation cavity, and the other end of the oil cylinder rod joint is connected to the oil cylinder rod.

Further, the roller support is correspondingly provided with a vertical guide rail for guiding the roller support to move up and down.

The present invention has the following beneficial effects:

The vertical lifting device of the present invention, in addition to connecting the roller support for carrying the wire saw mechanism with the lifting drive mechanism through the screw mechanism, is also provided with a balance oil cylinder mechanism for offsetting the gravity loaded by the roller support. Supporting the gravity of the roller support and its load, the load of the screw mechanism will be almost zero, thereby greatly extending the service life of the screw, ensuring the reliability and safety of the lifting movement, and reducing the operation of the machine equipment. and maintenance costs.

In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages. Hereinafter, the present invention will be described in further detail with reference to the drawings.

Description of drawings

The accompanying drawings constituting a part of this application are used to provide further understanding of the present invention, and the schematic embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Fig. 1 is a schematic structural view of a vertical lifting device in a preferred embodiment of the present invention;

Fig. 2 is a structural schematic diagram of the connection between the screw mechanism and the roller support of the preferred embodiment of the present invention; and

Fig. 3 is a schematic structural view of a roller support in a preferred embodiment of the present invention.

Explanation of reference signs:

10. Roller support; 20. Lead screw mechanism; 30. Lifting drive mechanism; 40. Balance cylinder mechanism;

11. Body; 12. Lead screw nut; 13. Bearing mounting plate; 14. Bearing; 15. Cylinder rod joint;

16. Oil cylinder pressure plate; 17. Accommodating cavity; 21. Lead screw; 22. Protective cover;

31. Electric motor; 32. Universal joint; 33. Reducer; 41. Hydraulic system; 42. Oil cylinder rod.

Detailed ways

The embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways defined and covered by the claims.

Referring to Fig. 1, the preferred embodiment of the present invention provides a vertical lifting device, which is used in the lifting control field of a wire saw machine. This vertical lifting device comprises roller bearing 10, and roller bearing 10 is used for bearing wire saw mechanism, and roller bearing 10 is connected with the lifting driving mechanism 30 that is used to control roller bearing 10 to do lifting motion through lead screw mechanism 20, and roller bearing 10 is also connected with a balance oil cylinder mechanism 40 for counteracting the gravity loaded by the roller support 10 . During the working process, the lifting drive mechanism 30 guides the roller support 10 to move vertically through the screw mechanism 20. The wire saw mechanism on the roller support 10 and the gravity of the roller support 10 itself make the lead screw mechanism 20 work in a zero-gravity environment, thereby greatly improving the service life of the lead screw mechanism 20 . Moreover, the lifting device of this embodiment ensures the reliability and safety of the lifting movement, and reduces the operation and maintenance costs of the machinery and equipment.

Referring to FIG. 1 , preferably, in this embodiment, the vertical lifting device includes two sets of roller supports 10 arranged in parallel at intervals, and each set of roller supports 10 is provided with a balance cylinder mechanism 40 and a screw mechanism 20 . In this way, the parallel lifting control of the two groups of wire saw mechanisms is realized, which improves the processing efficiency of stone cutting at the construction site, and the lifting displacement of the two groups of wire saw mechanisms can be kept synchronous, and each group is used to drive the roller support 10 for lifting The moving screw mechanism 20 can work in a zero-gravity environment with high reliability and stability. In this embodiment, with reference to Fig. 1 and Fig. 2, the lifting drive mechanism 30 includes a motor 31, and the motor 31 is connected with two speed reducers 33 via a universal joint 32, and the two speed reducers 33 are respectively connected to two roller bearings. Corresponding to the screw mechanism 20, the screw mechanism 20 is used to convert the circumferential motion output by the reducer 33 into a vertical lifting motion, so as to drive the roller support 10 connected with the screw mechanism 20 to perform lifting motion.

Preferably, referring to FIG. 2 , the lead screw mechanism 20 includes a lead screw 21, a bearing mounting plate 13 and a bearing 14 are arranged between the lead screw 21 and the roller support 10, and the bearing 14 is preferably a thrust ball bearing to bear the lead screw 21. The load in the axial direction improves the stability of the lifting movement. Preferably, a protective cover 22 is provided on the outside of the lead screw 21 to prevent dust from the construction site from polluting the lead screw mechanism 20 .

In this embodiment, the balance cylinder mechanism 40 includes a hydraulic system 41 , a cylinder rod 42 and a counterweight valve. Among them, the counterweight valve is used to control the output oil pressure of the hydraulic system 41 to balance the gravity loaded by the roller support 10, so as to ensure that the screw mechanism 20 works under the zero-load state; Lower support the gravity of roller bearing 10 loads. Referring to FIG. 3 , in this embodiment, the roller support 10 includes a body 11 and a screw nut 12 arranged on the body 11 to match the lead screw 21 , and the body 11 is also provided with a cylinder rod joint for connecting the cylinder rod 42 15. Preferably, the top of the body 11 is fixed with an oil cylinder pressure plate 16, and an accommodation cavity 17 is formed between the oil cylinder pressure plate 16 and the body 11, and one end of the oil cylinder rod joint 15 is clamped in the accommodation cavity 17, and the oil cylinder rod joint 15 The other end is connected with the cylinder rod 42 . In this way, the oil cylinder rod 42 supports the roller support 10 through the cooperation of the oil cylinder rod joint 15 and the oil cylinder pressure plate 16, which avoids the wear and tear caused by the direct contact between the oil cylinder rod 42 and the roller support 10, and prolongs the service life of the oil cylinder rod 42.

Preferably, in this embodiment, the roller support 10 is correspondingly provided with a straight guide rail for guiding the roller support 10 to perform lifting movement, so as to facilitate the displacement movement of the roller support 10 along the direction of the vertical guide rail, and improve the system for lifting movement. reliability.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and changes. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims (9)

1. a vertical lifting device, comprising a roller support (10), and the roller support (10) is used to carry a wire saw mechanism, characterized in that, The roller support (10) is connected with a lifting drive mechanism (30) for controlling the lifting movement of the roller support (10) through a screw mechanism (20), and the roller support (10) is also connected with a A balance oil cylinder mechanism (40) that counteracts the gravity loaded by the roller support (10); The balance cylinder mechanism (40) includes a hydraulic system (41), a cylinder rod (42) and a counterweight valve, wherein the counterweight valve is used to control the output oil pressure of the hydraulic system (41) to balance the The gravity loaded by the roller support (10) is to ensure that the screw mechanism (20) works under the zero load state; the cylinder rod (42) is used to support the hydraulic system (41) under the control of the Describe the gravity loaded by the roller support (10). 2. The vertical lifting device according to claim 1, characterized in that, The vertical lifting device includes two sets of roller supports (10) arranged in parallel and at intervals, and each group of roller supports (10) is correspondingly provided with the balance oil cylinder mechanism (40) and the screw mechanism ( 20). 3. The vertical lifting device according to claim 2, characterized in that, The lifting drive mechanism (30) includes a motor (31), and the motor (31) is connected with two speed reducers (33) via a universal joint (32); wherein, a speed reducer (33) is connected with a roller support The lead screw mechanism (20) corresponding to the seat (10), another speed reducer (33) is connected with the lead screw mechanism (20) corresponding to another roller support (10), to drive and the lead screw mechanism (20) respectively ) connected to the roller support (10) for lifting motion. 4. The vertical lifting device according to claim 3, characterized in that, The screw mechanism (20) includes a screw (21), and a bearing mounting plate (13) and a bearing (14) are arranged between the screw (21) and the roller support (10). 5. The vertical lifting device according to claim 4, characterized in that, The bearing (14) is a thrust ball bearing. 6. The vertical lifting device according to claim 4, characterized in that, A protective cover (22) is provided on the outside of the screw (21). 7. The vertical lifting device according to claim 4, characterized in that, The roller support (10) includes a body (11) and a screw nut (12) matched with the lead screw (21) provided on the body (11), and the body (11) is also provided with There is a cylinder rod union (15) for connecting said cylinder rod (42). 8. The vertical lifting device according to claim 7, characterized in that, An oil cylinder pressure plate (16) is fixed on the body (11), and an accommodation cavity (17) is formed between the oil cylinder pressure plate (16) and the body (11). The joint of the oil cylinder rod (15) One end is clamped in the accommodating cavity (17), and the other end of the oil cylinder rod joint (15) is connected with the oil cylinder rod (42). 9. The vertical lifting device according to any one of claims 1 to 8, characterized in that, The roller support (10) is correspondingly provided with vertical guide rails for guiding the roller support (10) to move up and down.