Pre-pressing mechanism of cotton press

Abstract

The utility model relates to the technical field of cotton press machines, in particular to a pre-pressing mechanism of a cotton press machine, which comprises a pre-pressing oil cylinder, a base and a controller, a rodless cavity is arranged at the inner top end of the pre-pressing oil cylinder, a rod cavity is arranged at the inner bottom end of the pre-pressing oil cylinder, a rodless cavity oil pipe is arranged at one end of the pre-pressing oil cylinder, and a rod cavity is arranged at the other end of the pre-pressing oil cylinder. A rod cavity oil pipe is installed at the other end of the pre-pressing oil cylinder, the pre-pressing oil cylinder is further communicated and connected with the motor pump set, a liquid filling assembly is installed between one end of the rodless cavity oil pipe and the top end of the pre-pressing oil cylinder and comprises a liquid filling oil tank, a liquid filling valve and a liquid filling valve oil pipe, and a liquid filling oil pipe is installed and connected between the liquid filling valve and the liquid filling oil tank. A liquid filling valve control oil pipe is installed and connected between the liquid filling oil pipe and the rod cavity oil pipe, the liquid filling oil tank and the liquid filling valve are both electrically connected with the controller, and a liquid filling oil return pipe is further arranged at the top end of the liquid filling oil tank. And the service life of the equipment is influenced.

Description

Technical Field

[0001] The present application relates to the technical field of cotton baling machines, and specifically discloses a pre-pressing mechanism of a cotton baling machine. Background Art

[0002] Cotton baler is also called cotton hydraulic baler. The existing cotton baler is mainly composed of main machine, hydraulic system, electrical control system, auxiliary machine, etc. Most of the current cotton balers are high-speed balers with the characteristics of fast pre-pressing speed.

[0003] However, due to the fast pre-stressing speed of the existing high-speed cotton baler, the motor pump group of the main hydraulic oil tank does not replenish the oil to the hydraulic system, which not only causes hydraulic shock and noise, but also the structure of the hydraulic pipeline is subject to large vibrations during high-speed pre-stressing operation, resulting in unstable operation of the overall structure, easy damage to hydraulic components, rapid increase in oil temperature, accelerated aging of seals, and easy to have an adverse effect on the service life of the equipment. Therefore, in view of this, the inventor provides a pre-stressing mechanism for a cotton baler to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem that insufficient oil replenishment in the traditional hydraulic system easily causes hydraulic shock, damages the hydraulic pipelines and hydraulic components, and shortens the service life of the equipment.

[0005] In order to achieve the above-mentioned purpose, the basic scheme of the present invention provides a prestressing mechanism of a cotton baler, including a prestressing oil cylinder, a base for installing and fixing the prestressing oil cylinder, and a controller. The internal top end of the prestressing oil cylinder is provided with a rodless cavity, and the internal bottom end of the prestressing oil cylinder is provided with a rod cavity. One end of the prestressing oil cylinder is provided with a rodless cavity oil pipe connected to the rodless cavity, and the other end of the prestressing oil cylinder is provided with a rod cavity oil pipe connected to the rod cavity. The prestressing oil cylinder is also connected to the motor pump group, and a filling component for filling the rodless cavity oil pipe with liquid is installed between the end of the rodless cavity oil pipe away from the prestressing oil cylinder and the top end of the prestressing oil cylinder. The filling component includes a filling oil tank detachably mounted on the motor pump group, a filling valve mounted at the bottom outlet end of the filling oil tank, and a filling valve oil pipe connected between the filling valve and the prestressing oil cylinder. The filling oil tank and the filling valve are both electrically connected to the controller, and a filling return oil pipe is also provided at the top of the filling oil tank.

[0006] The principles and effects of this basic solution are:

[0007] 1. Compared with the prior art, the present invention supplies oil to the pre-load cylinder by utilizing a filling valve, a filling oil tank and a filling valve oil pipe, thereby avoiding the situation of insufficient oil supply to the pre-load cylinder system. Without increasing power consumption and its design cost, the present invention effectively reduces the impact or impact noise generated by the pre-load cylinder during the up and down processes, realizes the silent operation of the pre-load cylinder, and at the same time avoids the increase of oil temperature, maintains the service life of hydraulic components, improves the operating stability of the equipment, and solves the problem that insufficient oil replenishment in the traditional hydraulic system easily causes hydraulic shock, damages the hydraulic pipes and hydraulic components, and affects the service life of the equipment.

[0008] Furthermore, the base is provided with a mounting bracket located on one side of the preload cylinder, and the filling oil tank is detachably mounted on top of the mounting bracket. The mounting bracket facilitates the installation and fixation of the filling oil tank, while providing a suitable installation height for the filling oil tank, facilitating the delivery of hydraulic oil.

[0009] Furthermore, a three-way control valve for controlling the flow direction of hydraulic oil is installed between the top of the preload cylinder and the ends of the charging valve oil pipe and the rodless chamber oil pipe. The three-way control valve facilitates the regulation of the flow direction of hydraulic oil between the preload cylinder, the charging valve oil pipe, and the rodless chamber oil pipe.

[0010] Furthermore, the charging valve is a three-way valve structure, and the charging valve is connected to the charging oil tank, the charging valve oil pipe, and the rodless chamber oil pipe respectively. By setting the charging valve to adopt a three-way valve structure, the flow direction of the hydraulic oil between the charging oil tank, the charging valve oil pipe, and the rodless chamber oil pipe can be easily regulated.

[0011] Furthermore, one side of the filling valve can be detachably mounted and fixed on the side of the mounting frame. By mounting the filling valve on the side of the mounting frame, it is not only convenient to install and fix the filling valve, but also convenient to distribute, install and connect the pipelines connected to the filling valve.

[0012] Furthermore, the side of the mounting frame is provided with a plurality of ladder cross bars for facilitating climbing. By arranging the ladder cross bars, climbing auxiliary tools can be provided when installing or maintaining the liquid-filled oil tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 A structural schematic diagram of a pre-pressing mechanism of a cotton baler proposed in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0015] In order to further illustrate the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the following is a detailed description of the specific implementation method, structure, characteristics and effects of the present invention in combination with the accompanying drawings and preferred embodiments.

[0016] The figure marks in the drawings of the specification include: pre-load cylinder 1, base 2, rodless chamber oil pipe 3, rod chamber oil pipe 4, filling oil tank 5, filling valve 6, filling valve oil pipe 7, filling return oil pipe 8, mounting frame 9, three-way control valve 10, stepped cross bar 11, filling valve control oil pipe 12, filling oil pipe 13.

[0017] A pre-pressing mechanism for a cotton baler, for example Figure 1 As shown: it includes a pre-stressing oil cylinder 1, a base 2 for installing and fixing the pre-stressing oil cylinder 1 and a controller, the internal top end of the pre-stressing oil cylinder 1 is provided with a rodless cavity, the internal bottom end of the pre-stressing oil cylinder 1 is provided with a rod cavity, the top end of the pre-stressing oil cylinder 1 is provided with a rodless cavity oil pipe 3 connected to the rodless cavity, the bottom left end of the pre-stressing oil cylinder 1 is provided with a rod cavity oil pipe 4 connected to the rod cavity, the pre-stressing oil cylinder 1 is also connected to the motor pump group, and a rodless cavity oil pipe 3 is installed between the end away from the pre-stressing oil cylinder 1 and the top end of the pre-stressing oil cylinder 1 for supplying oil to the rodless cavity. The cavity oil pipe 3 is filled with liquid, and the filling component includes a filling oil tank 5 that can be detachably mounted on the motor pump group, a filling valve 6 installed at the bottom outlet end of the filling oil tank 5, and a filling valve oil pipe 7 connected between the filling valve 6 and the pre-load cylinder 1. A filling oil pipe 13 is installed and connected between the filling valve 6 and the filling oil tank 5, and a filling valve control oil pipe 12 is installed and connected between the filling oil pipe 13 and the rod cavity oil pipe 4. The filling oil tank 5 and the filling valve 6 are both electrically connected to the controller, and a filling return oil pipe 8 is also provided at the top of the filling oil tank 5.

[0018] Among them, such as Figure 1 As shown, the base 2 is equipped with a mounting bracket 9 located to the left of the preload cylinder 1. The charging tank 5 is removably mounted on top of the mounting bracket 9. A three-way control valve 10 is installed between the top of the preload cylinder 1 and the ends of the charging valve oil pipe 7 and the rodless chamber oil pipe 3 to control the flow direction of the hydraulic oil. The charging valve 6 is a three-way valve structure and is connected to the charging tank 5, the charging valve oil pipe 7, and the rodless chamber oil pipe 3.

[0019] Among them, such as Figure 1 As shown, the back side of the filling valve 6 is detachably mounted and fixed on the side of the mounting frame 9. Wherein, the side of the mounting frame 9 is provided with four ladder cross bars 11 for facilitating climbing.

[0020] During the specific implementation of the present invention, when the hydraulic oil pumped out by the motor pump group of the main hydraulic oil tank passes through the rodless chamber oil pipe 3 of the preload cylinder 1, it drives the preload cylinder 1 to move downward. After the preload cylinder 1 has moved downward for a certain distance, negative pressure is generated in the rodless chamber oil pipe 3. At this time, the controller opens the filling valve 6 and connects it with the filling valve oil pipe 7, so that the hydraulic oil in the filling oil tank 5 is quickly transported in the filling valve 6 and the filling valve oil pipe 7, and enters the rodless chamber of the preload cylinder 1 through the three-way control valve 10. Since the rodless chamber of the preload cylinder 1 is filled with hydraulic oil, the impact force of the high-speed transported hydraulic oil when it is filled into the rodless chamber accelerates the downward speed of the preload cylinder 1. At the same time, the rodless chamber is filled with hydraulic oil, which also avoids the generation of hydraulic cavitation and cavitation.

[0021] When the hydraulic oil pumped out by the motor pump group of the main hydraulic oil tank passes through the rod chamber oil pipe 4 of the preload cylinder 1, it drives the preload cylinder 1 to move upward. Under the action of the filling valve control oil pipe 12, the filling valve 6 is forcibly opened, and the hydraulic oil in the rodless chamber of the preload cylinder 1 returns to the filling oil tank 5 through the filling valve oil pipe 7 and the rodless chamber oil pipe 3, thereby reducing the return oil back pressure, and thus enabling the preload cylinder 1 to achieve noiseless retreat operation.

[0022] Compared with the prior art, the utility model supplies oil to the pre-stressing cylinder 1 by utilizing the filling valve 6, the filling oil tank 5 and the filling valve oil pipe 7, thereby avoiding the situation of insufficient oil supply to the pre-stressing cylinder 1 system. Without increasing power consumption and its design cost, the utility model effectively reduces the impact or impact noise generated by the pre-stressing cylinder 1 during the up and down processes, realizes the silent operation of the pre-stressing cylinder 1, and at the same time avoids the increase of oil temperature, maintains the service life of hydraulic components, improves the operating stability of the equipment, and solves the problem of insufficient oil replenishment in traditional hydraulic systems, which is prone to hydraulic shock, damages hydraulic pipes and hydraulic components, and affects the service life of the equipment.

[0023] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments using the technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A pre-pressing mechanism for a cotton baler, characterized by: The oil pump extends into the oil pumping station through the top of the oil pumping station, and the oil pumping station is connected with the oil pumping station through the top of the oil pumping station.

2. The pre-pressing mechanism of a cotton baler according to claim 1, characterized in that: The base is provided with a mounting bracket located on one side of the pre-pressing oil cylinder, and the liquid filling oil tank is detachably mounted on the top of the mounting bracket.

3. The pre-pressing mechanism of a cotton baler according to claim 2, characterized in that: A three-way control valve for controlling the flow direction of the hydraulic oil is installed between the top of the pre-compression oil cylinder and the end of the filling valve oil pipe and the end of the rodless cavity oil pipe.

4. The pre-pressing mechanism of a cotton baler according to claim 3, characterized in that: The filling valve is a three-way valve structure, and the filling valve is connected and installed with the filling oil tank, the filling valve oil pipe and the rodless cavity oil pipe respectively.

5. The pre-pressing mechanism of a cotton baler according to claim 4, characterized in that: One side of the filling valve is detachably mounted and fixed on the side of the mounting frame.

6. The pre-pressing mechanism of a cotton baler according to claim 5, characterized in that: The side of the mounting frame is provided with a plurality of ladder cross bars for facilitating climbing.

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