Negative pressure mechanism mounted on unloading machine

Abstract

The utility model discloses a kind of negative pressure mechanism carried on unloading machine, including air suction pump, driving motor of driving air suction pump, negative pressure pipe of connecting air suction pump and suction cup, exhaust pipe connected with air suction pump, assembly frame is equipped on general assembly frame, the air suction pump and its driving motor are fixedly installed on assembly frame, the negative pressure pipe has telescopic elasticity. Its advantage lies in, negative pressure mechanism can follow unloading machine movement, when suction cup moves, the telescopic amount of negative pressure pipe can satisfy moving stroke demand, whole operation process negative pressure pipe will not be hindered by other obstacles, guarantee the efficient operation of unloading machine.

Description

Technical Field

[0001] This utility model relates to a negative pressure mechanism mounted on an unloading machine, belonging to the field of unloading bagged goods technology. Background Technology

[0002] With rapid societal development, railway, port, and highway systems are experiencing heavy transportation workloads, leading to the emergence of various large-scale logistics enterprises. This places higher demands on cargo transportation and unloading efficiency, making mechanized unloading the mainstream method. However, in some railway stations, the unloading and packing of bulk bagged goods such as grain, fertilizer, and cement still faces challenges. Bagged goods constitute a large proportion of railway transportation, and currently, manual handling and unloading are prevalent. This manual unloading process is labor-intensive, inefficient, and results in long periods of time spent on freight cars, impacting freight car turnaround. Furthermore, high labor costs place a heavy burden on labor-intensive enterprises, thus affecting the overall efficiency of railway transportation.

[0003] To address the aforementioned issues, the industry has been continuously researching mechanized unloading. Patent application number 202311232091.7 discloses a bagged cargo unloading machine developed by our company. Its basic structure consists of a track beam mounted on a movable main unit, with one end positioned above the cargo extraction area (within the freight car compartment) and the other end above the cargo stacking platform. A bagged cargo extraction and release device travels along the track beam. In application, the extraction and release device extracts the bagged cargo from the freight car compartment and then, holding the bagged cargo, slides it along the track beam to the cargo stacking platform. The platform mentioned here generally refers to inbound transfer tools such as forklifts, where the bagged cargo stacked on the forklift is transferred to a nearby warehouse.

[0004] After the aforementioned unloading machine was launched on the market, customer feedback indicated that although it significantly improved work efficiency compared to manual handling, it still could not meet the demand for rapid unloading of large volumes of goods, and the market expects it to have better performance.

[0005] To solve the above problems, our company has developed a new loading and unloading machine. This machine uses suction cups to extract sealed packaging bags containing goods. The suction cups involve a negative pressure mechanism. The negative pressure mechanism used in the traditional method is set up on the site outside the loading and unloading machine and needs to be connected by a negative pressure pipeline. Its drawback is that it is very inconvenient to move the loading and unloading machine. Even when moving the suction cups during operation, there is a concern that the negative pressure pipeline may be obstructed by other objects. Utility Model Content

[0006] The technical problem to be solved by this utility model is: how to ensure that the movement of the suction cup is not hindered by the negative pressure tube connected to the negative pressure mechanism.

[0007] To address the above problems, the technical solution proposed by this utility model is as follows:

[0008] A negative pressure mechanism mounted on an unloading machine includes an air pump, a drive motor for driving the air pump, a negative pressure pipe connecting the air pump and a suction cup, and an exhaust pipe connecting the air pump. An assembly frame is provided on the assembly frame, and the air pump and its drive motor are fixedly mounted on the assembly frame. The negative pressure pipe has a retractable elasticity.

[0009] The suction cup has two sets of negative pressure mechanisms. There are two assembly frames, located on both sides of the main assembly frame. The air pumps and drive motors of the two sets of negative pressure mechanisms are fixedly installed on the two assembly frames respectively.

[0010] The assembly rack is fixed on the transfer rack.

[0011] The negative pressure pipe is placed on a multi-directional movable frame.

[0012] An air filter is installed on the negative pressure pipe between the suction cup and the air pump. The air drawn in from the suction cup passes through the air filter before entering the air pump.

[0013] The negative pressure pipe is also equipped with a one-way air supply valve. The one-way air supply valve has an air inlet that connects to the external space. At the inner end of the air inlet, there is a ball valve cavity that connects to the negative pressure pipe. Inside the ball valve cavity, there is a valve ball and a compression spring that presses the valve ball against the inner end of the air inlet.

[0014] An air filter cartridge is also installed between the air replenishment check valve and the negative pressure pipe. Beneficial effects

[0015] The negative pressure mechanism can move with the unloading machine. When the suction cup moves, the extension and retraction of the negative pressure pipe can meet the movement stroke requirements. The negative pressure pipe will not be hindered by other obstacles during the entire operation, ensuring the efficient operation of the loading and unloading machine. Attached Figure Description

[0016] Figure 1 A three-dimensional schematic diagram of an unloading machine equipped with a negative pressure mechanism;

[0017] Figure 2 This is a rear-view perspective view of the extraction and release device and the transmission device for assembling the negative pressure mechanism. The air pump and drive motor are omitted in the figure.

[0018] Figure 3 A side perspective three-dimensional schematic diagram of the extraction and release device and the transmission device for assembling the negative pressure mechanism;

[0019] Figure 4 This is a simplified schematic diagram of the negative pressure mechanism, with straight arrows indicating the airflow direction;

[0020] Figure 5 This is a cross-sectional schematic diagram of the air replenishment check valve.

[0021] In the diagram: 1. Air pump; 2. Exhaust pipe; 3. Drive motor; 4. Negative pressure pipe; 5. Air replenishment check valve; 51. Air inlet; 52. Ball valve cavity; 53. Valve ball; 54. Compression spring; 6. Air filter; 7. Air filter cartridge; 8. Suction cup; 100. Assembly frame; 101. Extraction and release device; 1011. Multi-directional moving frame; 102. Grab and release device; 103. Transmission device; 1031. Transmission frame; 104. Spacing adjustment cylinder; 105. Assembly frame. Detailed Implementation

[0022] To facilitate understanding of this application, the basic structure of the loading and unloading machine involved in this application will be briefly described below.

[0023] like Figure 1 As shown, the loading and unloading machine involved in this application includes a movable device capable of walking on the ground, an extraction and release device 101 installed on the front side of the movable device, and a gripping and release device 102 located on the rear side of the movable device. A conveying device 103 is also provided on the movable device below the extraction and release device 101 and the gripping and release device 102. The extraction and release device 101 has suction cups 8, which can extract bagged goods under negative pressure and release them onto the conveying device 103. The conveying device 103 can transport the bagged goods from front to back. The gripping and release device 102 can grab the bagged goods from the rear end of the conveying device 103 and stack them at a designated location. The movable device includes a main frame 100, on which the extraction and release device 101, the gripping and release device 102, and the conveying device 103 are mounted. The extraction and release device 101, the gripping and release device 102, and the conveying device 103 can slide up and down on the main frame 100. The extraction and release device 101 includes a multi-directional moving frame 1011, on which the suction cup 8 is mounted. The transmission device 103 includes a transmission frame 1031. A gap adjusting cylinder 104 is provided between the multi-directional moving frame 1011 and the transmission frame 1031 to adjust the distance between them and connect them. In application, the distance between the multi-directional moving frame 1011 and the transmission frame 1031 can be adjusted by extending or retracting the push rod of the gap adjusting cylinder 104. At the same time, the multi-directional moving frame 1011 and the transmission frame 1031 are connected together by the gap adjusting cylinder 104, so that they can slide synchronously up and down on the main assembly 100 as needed.

[0024] The present invention will be further described below with reference to the accompanying drawings:

[0025] like Figure 2As shown in Figure 5, a negative pressure mechanism mounted on an unloading machine includes an air pump 1, a drive motor 3 for driving the air pump 1, a negative pressure pipe 4 connecting the air pump 1 and the suction cup 8, and an exhaust pipe 2 connecting the air pump 1. An assembly frame 105 is provided on the main assembly frame 100, and the air pump 1 and its drive motor 3 are fixedly mounted on the assembly frame 105. The negative pressure pipe 4 has a retractable elasticity. In this way, when the unloading machine moves as a whole, the negative pressure mechanism can move with it. When the suction cup 8 moves, the extension and retraction of the negative pressure pipe 4 can meet the movement stroke requirements. Throughout the entire operation, the negative pressure pipe 4 will not be hindered by obstacles, ensuring the efficient operation of the unloading machine.

[0026] To provide sufficient suction, the suction cup 8 uses two sets of negative pressure mechanisms, and the assembly frame 105 is also provided with two, located on both sides of the main assembly frame 100 respectively. The air pump 1 of the two sets of negative pressure mechanisms and its drive motor 3 are respectively fixedly installed on the two assembly frames 105.

[0027] The assembly frame 105 can be directly fixed to the main assembly frame 100, or it can be fixed to the transfer frame 1031. Since the transfer frame 1031 is connected to the multi-directional moving frame 1011 through the spacing adjustment cylinder 104 and can rise and fall together with the multi-directional moving frame 1011, it is preferable that the assembly frame 105 is fixed to the transfer frame 1031, so that the negative pressure mechanism can rise and fall together with the suction cup 8 on the multi-directional moving frame 1011 during operation, which can reduce the amount of extension and retraction of the negative pressure pipe 4.

[0028] The negative pressure pipe 4 rests on the multi-directional moving frame 1011.

[0029] Because a lot of dust will be generated at the work site, in order to ensure the normal operation of the air pump 1, an air filter 6 is installed on the negative pressure pipe 4 between the suction cup 8 and the air pump 1. The air drawn in from the suction cup 8 passes through the air filter 6 before entering the air pump 1.

[0030] A one-way air supply valve 5 is also provided on the negative pressure pipe 4. The one-way air supply valve 5 has an air inlet 51 that connects to the external space. A ball valve cavity 52 that connects to the negative pressure pipe 4 is provided at the inner end of the air inlet 51. A valve ball 53 and a compression spring 54 that presses the valve ball 53 against the inner end of the air inlet 51 are provided in the ball valve cavity 52. ​​In this way, when the negative pressure in the negative pressure pipe 4 is too high, the external gas can compress the compression spring 54 into the negative pressure pipe 4, thereby realizing the automatic adjustment of the negative pressure value.

[0031] An air filter cartridge 7 is also provided between the air replenishment check valve 5 and the negative pressure pipe 4 to filter the replenished gas.

[0032] The above embodiments are only used to describe the present invention more clearly, and should not be regarded as limiting the scope of protection covered by the present invention. Any equivalent modifications should be regarded as falling within the scope of protection covered by the present invention.

Claims

1. A negative pressure mechanism mounted on an unloading machine, comprising a vacuum pump (1), a drive motor (3) for driving the vacuum pump (1), a negative pressure pipe (4) connecting the vacuum pump (1) and a suction cup (8), and an exhaust pipe (2) connecting the vacuum pump (1), characterized in that: An assembly frame (105) is provided on the general assembly frame (100), and the air pump (1) and its drive motor (3) are fixedly installed on the assembly frame (105). The negative pressure pipe (4) has a stretchable elasticity.

2. The negative pressure mechanism mounted on the unloading machine according to claim 1, characterized in that: The suction cup (8) has two sets of negative pressure mechanisms. There are two assembly frames (105), which are located on both sides of the main assembly frame (100). The air pump (1) of the two sets of negative pressure mechanisms and its drive motor (3) are fixedly installed on the two assembly frames (105).

3. The negative pressure mechanism mounted on the unloading machine according to claim 2, characterized in that: The assembly frame (105) is fixed on the transfer frame (1031).

4. The negative pressure mechanism mounted on the unloading machine according to any one of claims 1 to 3, characterized in that: The negative pressure pipe (4) rests on the multi-directional moving frame (1011).

5. The negative pressure mechanism mounted on the unloading machine according to claim 4, characterized in that: An air filter (6) is provided on the negative pressure pipe (4) between the suction cup (8) and the air pump (1). The air drawn in from the suction cup (8) passes through the air filter (6) and then enters the air pump (1).

6. The negative pressure mechanism mounted on the unloading machine according to claim 4, characterized in that: A one-way valve (5) for replenishing air is also provided on the negative pressure pipe (4). The one-way valve (5) for replenishing air has an air inlet (51) that connects to the external space. A ball valve cavity (52) that connects to the negative pressure pipe (4) is provided at the inner end of the air inlet (51). A valve ball (53) and a compression spring (54) that presses the valve ball (53) against the inner end of the air inlet (51) are provided in the ball valve cavity (52).

7. The negative pressure mechanism mounted on the unloading machine according to claim 4, characterized in that: An air filter cartridge (7) is also provided between the air replenishment check valve (5) and the negative pressure pipe (4).

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