Cargo conveying device

Abstract

The invention relates to the technical field of roller conveying, in particular to a goods conveying device which comprises a first conveying frame, a second conveying frame, a fixing plate, a top block mechanism, a lifting mechanism, a height adjusting mechanism and a limiting mechanism. During use, a first driving motor is started to drive a first positive and negative tooth screw rod to rotate, the rotating first positive and negative tooth screw rod drives two bottom push blocks which are spirally connected to positive and negative teeth of the first positive and negative tooth screw rod respectively to move oppositely, so that a crossed push arm rotates and gradually stands under the action of the two moving bottom push blocks at the bottom and a fixed shaft bracket; the vertical crossed push arm pushes the push plate at the top and the staggered-tooth supporting table to move upwards through the ejector block and the ejector plate, goods on the first conveying frame can be quickly jacked up along with upward movement of the staggered-tooth supporting table, and the bottom of the goods is released from contact with the first conveying frame so that the goods can be kept in a static state; and after the AGV reaches the receiving position, a first driving motor controls a first positive and negative tooth lead screw to rotate reversely to lower the staggered tooth supporting table, so that the cargoes lifted by the staggered tooth supporting table fall on the first conveying frame again and are conveyed to the AGV, and the device is convenient for preventing the situation that the AGV does not reach the receiving position but the cargoes continuously move forwards and fall off. And the goods lifting and temporary moving functions are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of roller conveying, and in particular to a cargo conveying device. Background Art

[0002] Roller conveying is a method of material handling and conveying using rollers. Roller conveying mainly relies on the rotation of rollers to drive the items placed on them to move forward. The rollers are usually driven by a motor to rotate, and the items are conveyed under the friction of the rollers.

[0003] At present, the existing roller conveyors do not have a structure for lifting and temporarily moving the goods and for adjusting the height and slope of the feed roller conveyor frame when in use, so that the existing roller conveyor frame is often used in conjunction with AGV for auxiliary handling operations. When the goods on the roller conveyor frame are about to reach the end pick-up position but the AGV has not reached the predetermined position, the entire roller conveyor frame needs to be stopped to prevent the goods from falling. At the same time, when loading goods at the front end of the roller conveyor frame, since the conveyor frame is integrated and the height cannot be adjusted, when placing the goods on the roller conveyor frame, lifting and lowering equipment of different heights are required to load the goods, which is relatively inconvenient. Based on the deficiencies of the existing technology, the present invention designs a cargo conveying device.

[0004] Based on this, the present invention designs a cargo conveying device to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a cargo conveying device.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a cargo conveying device comprises a first conveying frame, a second conveying frame, a fixed plate, a top block mechanism, a lifting mechanism, a height adjustment mechanism and a limiting mechanism, wherein the right end of the first conveying frame is provided with a first connecting seat, the left end of the second conveying frame is provided with a second connecting seat, the lower end of the second conveying frame is symmetrically provided with an inclined slide, the lower end of the inclined slide is provided with a wheel groove, the second connecting seat is movably hinged with the first connecting seat, a fixed plate is provided below the first conveying frame, the upper end of the fixed plate is fixedly connected with the top block mechanism, the center of the lower end of the top block mechanism is connected with the lifting mechanism, the lower end of the second conveying frame is provided with a height adjustment mechanism, and the upper end of the first conveying frame is provided with a limiting mechanism; the top block mechanism comprises a lifting rod, a push plate and a staggered tooth support platform, the four corners of the lower end of the push plate are fixedly connected with the lifting rod, the lower end of the lifting rod is fixedly connected to the upper end of the fixed plate, and the upper end of the push plate is evenly connected with five staggered tooth support platforms;

[0007] The lifting mechanism comprises a support plate, a first positive and negative screw rod, a first driving motor, a bottom push block, a fixed axis frame, a cross push arm, a top block and a top plate, the two support plates are fixedly connected to the fixed plate, the first positive and negative screw rods are movably installed between the two support plates, one end of the first positive and negative screw rods is fixedly connected to the first driving motor, the first driving motor is fixedly installed on one side support plate, the positive teeth and negative teeth of the first positive and negative screw rods are spirally connected with the bottom push block, a fixed axis frame is provided above the center of the first positive and negative screw rods, a cross push arm is movably installed on the fixed axis frame, the upper end of the cross push arm is movably connected to the top block, the lower end of the cross push arm is movably connected to the bottom push block, the top blocks are fixedly connected to the top plate, and the top plate is fixedly connected to the bottom of the push plate.

[0008] As a preferred technical solution of the present invention, a limiting groove is provided on the support plate, a limiting column is slidably connected in the limiting groove, a connecting plate is fixedly connected to the limiting column, a cross axis is fixedly connected between the connecting plates, and the cross push arm is movably connected to the cross axis.

[0009] As a preferred technical solution of the present invention, the height adjustment mechanism includes a slide rail, a slide groove, a support arm, a telescopic rod and a second drive motor. A slide groove is provided at the upper end of the slide rail, and a support arm is slidably arranged in the slide groove. The upper end of the support arm is movably arranged in an inclined slide. A telescopic rod is fixedly connected to one side of the support arm, and the telescopic rod is transmission-connected to the second drive motor. The second drive motor is fixedly installed at the upper end of the slide rail.

[0010] As a preferred technical solution of the present invention, a roller is movably mounted on the top end of the support arm, and the roller is rollingly connected in the wheel groove.

[0011] As a preferred technical solution of the present invention, a sliding block is provided at the bottom end of the support arm, and the sliding block is slidably disposed in a sliding groove.

[0012] As a preferred technical solution of the present invention, the limiting mechanism includes a vertical frame, a guide rod, a second positive and negative threaded screw, a sliding block, a vertical plate, a guide plate and a roller. The two side plates of the vertical frame are respectively fixedly connected to the two sides of the first conveying frame. Two guide rods are symmetrically fixed between the vertical frames. A second positive and negative threaded screw is arranged between the two guide rods. The second positive and negative threaded screw is movably installed on the vertical frame. The positive teeth and negative teeth of the second positive and negative threaded screw are both spirally connected with sliding blocks. The sliding block is slidably connected to the two guide rods.

[0013] As a preferred technical solution of the present invention, the lower end of the sliding block is fixedly connected to a vertical plate, the lower end of the vertical plate is fixedly connected to a guide plate, and a plurality of rollers are movably provided on one side wall of the guide plate.

[0014] As a preferred technical solution of the present invention, the guide plate is composed of a straight plate and an inclined plate, and the straight plate is located at the delivery end of the first conveyor frame and the inclined plate is located at the receiving end of the first conveyor frame.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. When the present invention is in use, the first driving motor is started to drive the first positive and negative screw rods to rotate, and the rotating first positive and negative screw rods drive the two bottom push blocks respectively spirally connected on the positive and negative teeth of the first positive and negative screw rods to move toward each other, so that the cross push arm rotates and gradually stands upright under the action of the two moving bottom push blocks and the fixed shaft frame at the bottom, and the upright cross push arm pushes the top push plate and the staggered tooth support platform to move upward accordingly through the top block and the top plate. As the staggered tooth support platform moves upward, the goods on the first conveying frame can be quickly lifted up, so that the bottom of the goods is released from contact with the first conveying frame to maintain a stationary state. After the AGV reaches the receiving position, the first driving motor and the first positive and negative screw rods are controlled to rotate in the opposite direction to lower the staggered tooth support platform, so that the goods lifted by the staggered tooth support platform fall back on the first conveying frame and are transported to the AGV. This device is convenient for preventing the AGV from falling off while the goods continue to move forward before reaching the receiving position, so that it has the function of lifting and temporarily moving the goods;

[0017] 2. When the present invention is in use, the second driving motor is started to control the extension and retraction of the telescopic rod through the height adjustment mechanism provided at the lower end of the second conveying frame, and the telescopic rod pulls or pushes the support arm to move forward or backward between the slide slot and the inclined slideway, so that when the support arm moves forward, the support arm can push the second conveying frame to rotate upward around the first connecting seat, so that the front end height of the second conveying frame is raised; if the support arm moves backward, the support arm changes the supporting position of the second conveying frame, so that the second conveying frame rotates downward around the first connecting seat, and then the front end height of the second conveying frame is lowered, so that the cargo conveying device is convenient to adjust the receiving height of the front end of the second conveying frame, so that the conveying frame has the advantage of adjustable height and slope;

[0018] 3. When the present invention is in use, the second forward and reverse threaded screw is rotated by rotating a rotating handwheel provided at one end of the second forward and reverse threaded screw. Under the action of the rotation of the second forward and reverse threaded screw, two sliding blocks spirally connected to the forward and reverse threads thereof are moved toward or in opposite directions. The movement of the two sliding blocks drives the two guide plates to move through the vertical plate. The two guide plates are used to guide and limit the conveyance of the goods on the first conveyor frame, so that the goods can be accurately conveyed to the predetermined receiving position, thereby avoiding deviation in the conveyance of the goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0020] Figure 1 It is a schematic diagram of the overall front view structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the overall left-side structure of the present invention;

[0022] Figure 3 It is a schematic diagram of the overall right side structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the structure of the limiting mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the lifting mechanism structure of the present invention;

[0025] Figure 6 It is a schematic diagram of the explosion structure of the lifting mechanism of the present invention;

[0026] Figure 7 It is a partial enlarged structural schematic diagram of the limiting mechanism of the present invention;

[0027] Figure 8 It is a schematic diagram of the height adjustment mechanism structure of the present invention;

[0028] Fig. 9 It is a partial cross-sectional enlarged structural schematic diagram of the height adjustment mechanism of the present invention.

[0029] In the figure: 1, first conveying frame; 101, first connecting seat; 2, second conveying frame; 201, second connecting seat; 202, inclined slide; 2021, wheel groove; 3, fixed plate; 4, top block mechanism; 401, lifting rod; 402, push plate; 403, staggered tooth support platform; 5, lifting mechanism; 501, support plate; 502, first positive and negative threaded rod; 503, first driving motor; 504, bottom push block; 505, fixed shaft frame; 5051, limit groove; 5052, limit column; 50 53. Connecting plate; 5054. Cross axis; 506. Cross push arm; 507. Top block; 508. Top plate; 6. Height adjustment mechanism; 601. Slide rail; 602. Slide groove; 603. Support arm; 6031. Roller; 6032. Sliding block; 604. Telescopic rod; 605. Second drive motor; 7. Limiting mechanism; 701. Stand; 702. Guide rod; 703. Second positive and negative screw rod; 704. Sliding block; 705. Stand; 706. Guide plate; 707. Roller. DETAILED DESCRIPTION

[0030] The following will be combined with the attached embodiment of the present invention Figure 1-9, the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] Example

[0032] See also Figure 1-9 The present invention provides the following technical solutions: a cargo conveying device, comprising a first conveying frame 1, a second conveying frame 2, a fixing plate 3, a top block mechanism 4, a lifting mechanism 5, a height adjustment mechanism 6 and a limiting mechanism 7, a first connecting seat 101 is arranged at the right end of the first conveying frame 1, a second connecting seat 201 is arranged at the left end of the second conveying frame 2, an inclined slide 202 is symmetrically arranged at the lower end of the second conveying frame 2, a wheel groove 2021 is opened at the lower end of the inclined slide 202, the second connecting seat 201 is movably hinged with the first connecting seat 101, and a A fixed plate 3, the upper end of the fixed plate 3 is fixedly connected with a top block mechanism 4, the center of the lower end of the top block mechanism 4 is connected with a lifting mechanism 5, a height adjustment mechanism 6 is arranged below the second conveying frame 2, a limit mechanism 7 is arranged above the first conveying frame 1, the top block mechanism 4 includes a lifting rod 401, a push plate 402 and a staggered tooth support platform 403, the four corners of the lower end of the push plate 402 are fixedly connected with the lifting rod 401, the lower end of the lifting rod 401 is fixedly connected to the upper end of the fixed plate 3, and the upper end of the push plate 402 is evenly connected with five staggered tooth support platforms 403;

[0033] The lifting mechanism 5 includes a support plate 501, a first positive and negative threaded rod 502, a first drive motor 503, a bottom push block 504, a fixed shaft frame 505, a cross push arm 506, a top block 507 and a top plate 508. The two support plates 501 are fixedly connected to the fixed plate 3. The first positive and negative threaded rod 502 is movably installed between the two support plates 501. One end of the first positive and negative threaded rod 502 is fixedly connected to the first drive motor 503. The first drive motor 503 is fixedly installed on one side of the support plate On 501, the positive and negative threads of the first positive and negative threaded screw rod 502 are both spirally connected with a bottom push block 504, and a fixed shaft frame 505 is arranged above the center of the first positive and negative threaded screw rod 502, and a cross push arm 506 is movably installed on the fixed shaft frame 505, the upper end of the cross push arm 506 is movably connected to the top block 507, and the lower end of the cross push arm 506 is movably connected to the bottom push block 504, and the top block 507 is fixedly connected to the top plate 508, and the top plate 508 is fixedly connected to the bottom of the push plate 402.

[0034] The support plate 501 is provided with a limiting groove 5051 , in which a limiting column 5052 is slidably connected, the limiting column 5052 is fixedly connected with a connecting plate 5053 , between which a cross shaft 5054 is fixedly connected, and the cross push arm 506 is movably connected to the cross shaft 5054 .

[0035] Through the structural design of the lifting mechanism 5, when the conveying device is in use, when the AGV has not reached the receiving position, the goods can be lifted downward to separate the goods from the contact with the conveying rollers, thereby preventing the goods from falling due to continuous forward movement without frequent shutdowns.

[0036] The height adjustment mechanism 6 includes a slide rail 601, a slide groove 602, a support arm 603, a telescopic rod 604 and a second drive motor 605. A slide groove 602 is provided at the upper end of the slide rail 601, and a support arm 603 is slidably arranged in the slide groove 602. The upper end of the support arm 603 is movably arranged in the inclined slide 202. A telescopic rod 604 is fixedly connected to one side of the support arm 603. The telescopic rod 604 is transmission-connected to the second drive motor 605, and the second drive motor 605 is fixedly installed at the upper end of the slide rail 601.

[0037] A roller 6031 is movably mounted on the top of the support arm 603 , and the roller 6031 is rollingly connected in the wheel groove 2021 .

[0038] A slider 6032 is disposed at the bottom end of the support arm 603 , and the slider 6032 is slidably disposed in the slide groove 602 .

[0039] Through the connection design between the height adjustment mechanism 6 and the second conveyor frame 2, the second conveyor frame 2 has an adjustable height ramp function, which facilitates the adjustment of the receiving height of the front end of the second conveyor frame 2 to ensure a better receiving effect.

[0040] The limiting mechanism 7 includes a stand 701, a guide rod 702, a second forward and reverse screw rod 703, a sliding block 704, a stand plate 705, a guide plate 706 and a roller 707. The two side plates of the stand 701 are fixedly connected to the two sides of the first conveying frame 1 respectively. Two guide rods 702 are symmetrically fixed between the stands 701. A second forward and reverse screw rod 703 is arranged between the two guide rods 702. The second forward and reverse screw rod 703 is movably installed on the stand 701. The forward teeth and reverse teeth of the second forward and reverse screw rod 703 are both spirally connected with sliding blocks 704. The sliding block 704 is slidably connected to the two guide rods 702.

[0041] The lower end of the sliding block 704 is fixedly connected to a vertical plate 705 , and the lower end of the vertical plate 705 is fixedly connected to a guide plate 706 . A plurality of rollers 707 are movably provided on one side wall of the guide plate 706 .

[0042] The guide plate 706 is composed of a straight plate and an inclined plate connected together, and the straight plate is located at the delivery end of the first conveyor frame 1 and the inclined plate is located at the receiving end of the first conveyor frame 1 .

[0043] By rotating the second positive and negative thread screw 703, the sliding block 704 threadedly connected on its positive and negative threads can be moved toward or in the opposite direction, the distance between the two guide plates 706 can be adjusted, and the goods can be auxiliary guided and limited to ensure that the goods can be accurately transported to the predetermined position.

[0044] The working principle and use process of the present invention are as follows: during specific use, the second driving motor 605 is started to control the extension and retraction of the telescopic rod 604, and the telescopic telescopic rod 604 pulls or pushes the support arm 603 to move forward or backward between the slide groove 602 and the inclined slide 202. By changing the support position of the support arm 603 on the second conveyor frame 2, the receiving height of the front end of the second conveyor frame 2 is adjusted, so as to facilitate the adjustment of the height slope of the conveyor frame according to the use requirements, and the second forward and reverse screw rod 703 is rotated by rotating the rotating hand wheel provided at one end of the second forward and reverse screw rod 703. Under the action of the rotation of the second forward and reverse screw rod 703, the two sliding blocks 704 respectively spirally connected on the forward and reverse teeth thereof move toward or in the opposite direction. The movement of the two sliding blocks 704 drives the two guide plates 706 to move through the vertical plate 705. The transportation of the goods on the first conveyor frame 1 is guided and limited by the two guide plates 706, so that the goods can be accurately transported to the predetermined receiving position. When the AGV does not reach the receiving position during use, The first drive motor 503 is started to drive the first positive and negative threaded rod 502 to rotate. The rotating first positive and negative threaded rod 502 drives the two bottom push blocks 504 respectively connected to the positive and negative threads of the first positive and negative threaded rod 502 to move toward each other, so that the cross push arm 506 rotates and gradually stands upright under the action of the two moving bottom push blocks 504 and the fixed shaft frame 505 at the bottom. The upright cross push arm 506 pushes the top push plate 402 and the staggered tooth support platform 403 to move upwards through the top block 507 and the top plate 508. The upward movement of the tooth support platform 403 can quickly lift the goods on the first conveyor frame 1, so that the bottom of the goods can be released from contact with the first conveyor frame 1 and remain stationary. After the AGV reaches the receiving position, the first drive motor 503 controls the first forward and reverse screw rods 502 to rotate in the opposite direction to lower the staggered tooth support platform 403, so that the goods lifted by the staggered tooth support platform 403 fall back on the first conveyor frame 1 and are transported to the AGV, thereby preventing the goods from falling when the AGV continues to move forward before reaching the receiving position, and has good practicality.

[0045] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A cargo conveying device, comprising a first conveying frame (1), a second conveying frame (2), a fixing plate (3), a top block mechanism (4), a lifting mechanism (5), a height adjustment mechanism (6) and a limit mechanism (7), characterized in that: A first connecting seat (101) is arranged at the right end of the first conveying frame (1), a second connecting seat (201) is arranged at the left end of the second conveying frame (2), an inclined slideway (202) is symmetrically arranged at the lower end of the second conveying frame (2), a wheel groove (2021) is arranged at the lower end of the inclined slideway (202), the second connecting seat (201) is movably hinged to the first connecting seat (101), a fixing plate (3) is arranged below the first conveying frame (1), the upper end of the fixing plate (3) is fixedly connected to a top block mechanism (4), and the middle of the lower end of the top block mechanism (4) is A lifting mechanism (5) is connected at the center, a height adjustment mechanism (6) is arranged below the second conveying frame (2), a limit mechanism (7) is arranged above the first conveying frame (1), the top block mechanism (4) comprises a lifting rod (401), a push plate (402) and a staggered tooth support platform (403), the four corners of the lower end of the push plate (402) are fixedly connected with the lifting rod (401), the lower end of the lifting rod (401) is fixedly connected to the upper end of the fixed plate (3), and the upper end of the push plate (402) is evenly connected with five staggered tooth support platforms (403); The lifting mechanism (5) comprises a support plate (501), a first positive and negative threaded rod (502), a first driving motor (503), a bottom push block (504), a fixed shaft frame (505), a cross push arm (506), a top block (507) and a top plate (508), the two support plates (501) are fixedly connected to the fixed plate (3), the first positive and negative threaded rod (502) is movably installed between the two support plates (501), one end of the first positive and negative threaded rod (502) is fixedly connected to the first driving motor (503), and the first driving motor (503) is fixedly installed on one side of the support plate ( 501), the positive and negative teeth of the first positive and negative threaded rod (502) are both spirally connected with a bottom push block (504), a fixed shaft frame (505) is arranged above the center of the first positive and negative threaded rod (502), a cross push arm (506) is movably mounted on the fixed shaft frame (505), the upper end of the cross push arm (506) is movably connected to the top block (507), the lower end of the cross push arm (506) is movably connected to the bottom push block (504), the top block (507) is fixedly connected to the top plate (508), and the top plate (508) is fixedly connected to the bottom of the push plate (402).

2. The cargo conveying device according to claim 1, characterized in that: The support plate (501) is provided with a limiting groove (5051), a limiting column (5052) is slidably connected in the limiting groove (5051), a connecting plate (5053) is fixedly connected to the limiting column (5052), a cross shaft (5054) is fixedly connected between the connecting plates (5053), and the cross push arm (506) is movably connected to the cross shaft (5054).

3. The cargo conveying device according to claim 1, characterized in that: The height adjustment mechanism (6) comprises a slide rail (601), a slide groove (602), a support arm (603), a telescopic rod (604) and a second drive motor (605); a slide groove (602) is provided at the upper end of the slide rail (601); a support arm (603) is slidably arranged in the slide groove (602); the upper end of the support arm (603) is movably arranged in the inclined slideway (202); a telescopic rod (604) is fixedly connected to one side of the support arm (603); the telescopic rod (604) is transmission-connected to the second drive motor (605); and the second drive motor (605) is fixedly mounted on the upper end of the slide rail (601).

4. The cargo conveying device according to claim 3, characterized in that: A roller (6031) is movably mounted on the top of the support arm (603), and the roller (6031) is rollingly connected in the wheel groove (2021).

5. The cargo conveying device according to claim 3, characterized in that: A slider (6032) is provided at the bottom end of the support arm (603), and the slider (6032) is slidably disposed in the slide groove (602).

6. The cargo conveying device according to claim 1, characterized in that: The limiting mechanism (7) comprises a stand (701), a guide rod (702), a second positive and negative threaded rod (703), a sliding block (704), a stand plate (705), a guide plate (706) and a roller (707); the two side plates of the stand (701) are respectively fixedly connected to the two sides of the first conveying frame (1); two guide rods (702) are symmetrically fixed between the stand (701); a second positive and negative threaded rod (703) is arranged between the two guide rods (702); the second positive and negative threaded rod (703) is movably mounted on the stand (701); the positive teeth and negative teeth of the second positive and negative threaded rod (703) are both spirally connected with sliding blocks (704); the sliding block (704) is slidably connected to the two guide rods (702).

7. The cargo conveying device according to claim 6, characterized in that: The lower end of the sliding block (704) is fixedly connected to a vertical plate (705), the lower end of the vertical plate (705) is fixedly connected to a guide plate (706), and a plurality of rollers (707) are movably arranged on one side wall of the guide plate (706).

8. The cargo conveying device according to claim 6, characterized in that: The guide plate (706) is composed of a straight plate and an inclined plate connected together, wherein the straight plate is located at the delivery end of the first conveying frame (1) and the inclined plate is located at the receiving end of the first conveying frame (1).

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