Universal threshold beam loading and unloading carrier and method

Abstract

A universal threshold beam loading and unloading carrier comprises a positioning mechanism arranged on a base frame, the positioning mechanism comprises a first supporting frame, a second supporting frame, a third supporting frame, a fourth supporting frame, a first pressing frame and a second pressing frame, the first supporting frame, the second supporting frame, the third supporting frame and the fourth supporting frame are identical in structure, and each supporting frame comprises a first support and a linkage block which are installed on the base frame. A plurality of supporting blocks are hinged in the height direction at intervals, limiting rods are arranged below the inward ends of the corresponding supporting blocks, linkage blocks are arranged between every two adjacent supporting blocks, the lower ends of the linkage blocks are hinged to the outward ends of the supporting blocks on the lower layer, and limiting grooves are formed in the upper ends of the linkage blocks and hinged to the outward ends of the supporting blocks on the upper layer. Each pressing frame comprises a second support installed on the machine frame, the second supports vertically extend upwards, a plurality of pressing blocks are arranged in the height direction at intervals, and the extending ends of the pressing blocks are elastic sections. The automatic loading and unloading device is simple in structure and low in machining cost, can realize automatic loading and unloading of a plurality of doorsill beams, is suitable for the doorsill beams of multiple specifications, and meets the transportation requirements of logistics enterprises.

Description

Technical Field

[0001] The invention relates to the field of packaging and transportation, and in particular to a universal door sill beam loading and unloading carrier and method. Background Art

[0002] With the continuous development and progress of the automotive machinery manufacturing packaging industry, manufacturing automation is a standard trend in the automotive industry, and there are higher requirements for logistics packaging design, manufacturing, transportation, maintenance and quality. Manufacturers hope to meet the needs of manufacturing automation as much as possible while meeting the product integrity, quality and strength.

[0003] like Figure 1 The above is a threshold beam structure. During the packaging and transportation process, the threshold beam of this structure needs to support one side of the straight section of the threshold beam and the extended ends of the two branch sections on the other side. The special carriers for threshold beams currently used are usually multi-layer designs, and are basically fully manual or semi-automatic packaging, which greatly wastes human resources and cannot meet customer demand for logistics packaging development trends.

[0004] Therefore, designing a threshold beam carrier that can meet the needs of automated loading and unloading is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0005] One of the purposes of the present invention is to address the deficiencies in the prior art and provide a universal threshold beam loading and unloading vehicle, which has a simple structure and low processing cost, can automatically load and unload multiple threshold beams, and can adapt to threshold beams of multiple specifications to meet the transportation needs of logistics companies.

[0006] A second object of the present invention is to provide a method for loading and unloading a threshold beam using the above-mentioned carrier, which is simple to operate and efficient.

[0007] A technical solution to achieve one of the purposes of the present invention is: a universal sill beam loading and unloading carrier, comprising a base frame, wherein the base frame is provided with at least one group of positioning mechanisms, wherein the positioning mechanisms include a first supporting frame, a second supporting frame, a third supporting frame, and a fourth supporting frame with the same structure, and a first pressing frame and a second pressing frame with the same structure, wherein the first supporting frame and the second supporting frame correspond to the two ends of one side of the straight segment of the sill beam, and can be moved in the width direction of the sill beam, the third supporting frame and the fourth supporting frame correspond to the extended ends of the two branch segments of the sill beam, respectively, and can be moved in the width direction of the sill beam, and the first pressing frame and the second pressing frame correspond to the door frame, respectively. At both ends of the straight section of the sill beam, each support frame includes a first bracket and a linkage block installed on the base frame, the first bracket extends vertically upward, and a plurality of support blocks are hingedly arranged at intervals along the height direction on the first bracket, and a limit rod is arranged below the inward end of the corresponding support block, the linkage block is arranged between two adjacent support blocks, the lower end of the linkage block is hingedly connected to the outward end of the support block of the lower layer, and a limit groove is arranged at the upper end of the linkage block and is hingedly connected to the outward end of the support block of the upper layer, and each pressing frame includes a second bracket installed on the frame, the second bracket extends vertically upward, and a plurality of pressing blocks are arranged at intervals along the height direction on the second bracket, and the extending end of the pressing block is an elastic section.

[0008] The number of the positioning mechanisms is two groups, which are symmetrically distributed along the center of the base frame.

[0009] The center of gravity of the support block is located outside the hinge point.

[0010] The first bracket is an inverted U-shaped frame, the support block is hinged in the inner space of the inverted U-shaped frame, and the inward end of the support block extends out of the U-shaped frame, and the outward end of the support block extends out of the U-shaped frame.

[0011] The base frame includes four columns arranged in a matrix, and a frame connected between the four columns. An inverted support bowl is provided at the bottom of the column, a positioning frame for inserting a forklift fork arm is provided in the middle of the bottom surface of the frame, and fixed wheels are provided at both ends of a short side of the bottom surface of the frame, and universal wheels are provided at both ends of the other short side.

[0012] A traction hook is arranged in the middle of a short side of the frame.

[0013] The inward end of the support block and the elastic section of the pressing block are both sleeved with rubber sleeves.

[0014] The technical solution to achieve the second purpose of the present invention is:

[0015] A method for loading and unloading a sill beam using any of the above-mentioned universal sill beam loading and unloading vehicles comprises the following steps:

[0016] 1) According to the specifications of the threshold beam, adjust the positions of the first support frame, the second support frame, the third support frame, and the fourth support frame, and each support block is located within the projection range of the corresponding support frame;

[0017] 2) A corresponding number of threshold beams are stacked and spacers are arranged between adjacent layers of threshold beams to form a threshold beam stack;

[0018] 3) Move the threshold beam stack to the range surrounded by each support frame;

[0019] 4) Move the threshold beam stack downward until the threshold beam is located above the corresponding support block, push the support block on the top layer to a horizontal state, and link other support blocks;

[0020] 5) Continue to move the threshold beam stack downward until the support blocks of each layer are limited by the limit rods and the elastic sections of the pressing blocks of each layer are pressed tightly against the upper surface of the corresponding threshold beam, thus completing the loading;

[0021] 6) After the transfer is in place, the threshold beam stack is moved upward, the elastic sections of each pressing block give way, and each supporting block is reset to the projection range of the corresponding supporting frame.

[0022] Furthermore, in step 3) and step 4), the threshold beam stack is moved downward by hoisting, and in step 6), the threshold beam is moved upward by hoisting.

[0023] The above technical solution has the following beneficial effects:

[0024] 1. A universal sill beam loading and unloading carrier includes a base frame, and at least one set of positioning mechanisms is provided on the base frame. By loading and positioning multiple sill beams in the positioning mechanisms and transferring them to designated positions, the multiple sill beams are unloaded, thus completing the packing and transportation operation of the sill beams. The positioning mechanisms include a first support frame, a second support frame, a third support frame, and a fourth support frame of the same structure, and a first pressing frame and a second pressing frame of the same structure. The first support frame and the second support frame correspond to the two ends of one side of the straight section of the sill beam, and can be moved along the width direction of the sill beam, that is, the first support frame and the second support frame are used to support one side of the bottom surface of the stacked multiple sill beams, and can meet the support requirements for sill beams of different specifications by adjusting the distance from one side of the sill beam. The third support frame and the fourth support frame correspond to the extended ends of the two branch segments of the threshold beam respectively, and can be moved along the width direction of the threshold beam, that is, the third support frame and the fourth support frame are used to support the bottom surface of the branch segment on the other side of the stacked multiple threshold beams, and can meet the support requirements of threshold beams of different specifications by adjusting the distance from the other side of the threshold beam. In addition, the support stability of the threshold beam can be ensured by four-point support on the bottom surface of the threshold beam. The first pressing frame and the second pressing frame correspond to the two ends of the straight segment of the threshold beam respectively, and are used to press the two ends of the top surface of the stacked multiple threshold beams to ensure the stability of the multiple threshold beams for packaging and transportation. Each support frame includes a first bracket and a linkage block installed on the base frame, the first bracket extends vertically upward, and multiple support blocks are hingedly arranged at intervals along the height direction on the first bracket, and a limit rod is arranged below the inner end of the corresponding support block, that is, the inner end of the support block is supported and limited by the limit rod when it rotates downward around the hinge point, so as to ensure the support stability of each support block for the threshold beam. The linkage block is arranged between two adjacent support blocks, and the lower end of the linkage block is hingedly connected to the outward end of the support block of the lower layer, and the upper end of the linkage block is provided with a limiting groove which is hingedly connected to the outward end of the support block of the upper layer. When the overlapping multiple threshold beams move downward to a specific height in each first bracket, the inward end of the support block of the top layer flips downward (the corresponding outward end flips upward) to horizontal, and the linkage drives the inward end of each support block of the lower layer to flip downward and be located below the corresponding position of the threshold beam. The overlapping multiple threshold beams continue to move downward to be supported on the corresponding support blocks, so as to realize synchronous support of the overlapping multiple threshold beams. When the overlapping multiple threshold beams move upward in each first bracket, the inward end of the upper support block can freely flip upward and reset (the corresponding outward end slides freely in the strip groove), so as to avoid interference with the threshold beam and ensure smooth unloading of the threshold beam.Each pressing frame includes a second bracket installed on the frame, the second bracket extends vertically upward, and a plurality of pressing blocks are arranged on the second bracket at intervals along the height direction, and the extending end of the pressing block is an elastic section, which can be bent and deformed. The stacked threshold beams are pressed against the two ends of the top surface of the corresponding threshold beams after being bent and deformed during the downward movement, thereby limiting the threshold beams from jumping up, which is a loading state. The stacked threshold beams are bent and deformed during the upward movement to give way to the threshold beams, which is an unloading state.

[0025] 2. The center of gravity of the support block is located outside the hinge point. When unloaded, each support block is automatically in a vertical state under the action of gravity to avoid interference during the loading process.

[0026] 3. The base frame includes four columns arranged in a matrix and a frame connected between the four columns. The bottom of the column is provided with an inverted support bowl, which allows the vehicles to be transported in an overlapping manner, thereby improving transportation efficiency and space utilization. A positioning frame for the forklift fork arm to be inserted is provided in the middle of the bottom surface of the frame to meet the needs of forklift transfer. Fixed wheels are provided at both ends of one short side of the bottom surface of the frame, and universal wheels are provided at both ends of the other short side to meet the needs of short-distance movement in the factory area.

[0027] 4. Rubber sleeves are provided on the inner end of the support block and the elastic section of the pressure block to avoid damage to the contact part of the threshold beam surface and ensure the quality of the threshold beam.

[0028] 5. The method for loading and unloading threshold beams of the present invention loads multiple stacked threshold beams by hoisting, and only needs to push the top layer of support blocks to be in a horizontal state to complete automatic loading and unloading and packaging. Multiple stacked threshold beams are unloaded by hoisting, which can realize automatic loading and unloading operations and meet the transportation operation needs of logistics companies.

[0029] Further description is given below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the sill beam of the present invention being symmetrically placed along the center of the base frame;

[0031] Figure 2 It is a structural schematic diagram of the present invention (right side);

[0032] Figure 3 It is a structural schematic diagram of the present invention (left side);

[0033] Figure 4 is a schematic diagram of the first bracket of the present invention (outward end);

[0034] Figure 5 is a schematic diagram of the first bracket of the present invention (inward end);

[0035] Figure 6Schematic diagram of the second bracket of the present invention.

[0036] In the accompanying drawings, 1 is a base frame, 2 is a positioning mechanism, 3 is a first supporting frame, 4 is a second supporting frame, 5 is a third supporting frame, 6 is a fourth supporting frame, 7 is a first pressing frame, 8 is a second pressing frame, 9 is a first bracket, 10 is a linkage block, 11 is a supporting block, 12 is a limiting rod, 13 is a limiting groove, 14 is a second bracket, 15 is a pressing block, 16 is an elastic section, 17 is a column, 18 is a skeleton, 19 is a supporting bowl, 20 is a positioning frame, 21 is a directional wheel, 22 is a universal wheel, and 23 is a traction hook. DETAILED DESCRIPTION

[0037] Example 1

[0038] See also Figures 1 to 6The universal sill beam loading and unloading carrier includes a base frame 1, and the base frame 1 is provided with at least one group of positioning mechanisms 2. In this embodiment, the base frame 1 includes four columns 17 arranged in a matrix, and a frame 18 connected between the four columns 17. An inverted support bowl 19 is provided at the bottom of the column 17. A positioning frame 20 for inserting a forklift fork arm is provided in the middle of the bottom surface of the frame 18. A fixed wheel 21 is provided at both ends of a short side of the bottom surface of the frame 18, and a universal wheel 22 is provided at both ends of the other short side. In order to facilitate short-distance movement within the factory area, a traction hook 23 is also provided in the middle of a short side of the frame 18. The frame is a mesh structure formed by welding multiple cross beams and longitudinal beams. Usually, the number of positioning mechanisms is two groups, which are symmetrically distributed along the center of the base frame 1, that is, the same carrier can load and unload two groups of stacked sill beams at the same time. The positioning mechanism 2 includes a first support frame 3, a second support frame 4, a third support frame 5, and a fourth support frame 6 with the same structure, and a first pressing frame 7 and a second pressing frame 8 with the same structure. The first support frame 3 and the second support frame 4 correspond to the two ends of one side of the straight section of the threshold beam, and can be moved along the width direction of the threshold beam. In this embodiment, the first support frame and the second support frame are arranged at the upper and lower parts of the left side of the frame, and can be adjusted in the left and right directions. The third support frame 5 and the fourth support frame 6 correspond to the extended ends of the two branch segments of the threshold beam, respectively, and can be moved along the width direction of the threshold beam. The first pressing frame 7 and the second pressing frame 8 correspond to the two ends of the straight section of the threshold beam, respectively. In this embodiment, the first pressing frame and the second pressing frame are arranged at the upper and lower ends of the left side of the frame, and the positions are fixed. Each support frame includes a first bracket 9 and a linkage block 10 installed on a base frame. The first bracket 9 extends vertically upward. A plurality of support blocks 11 are hingedly arranged at intervals along the height direction on the first bracket 9, and a limit rod 12 is arranged below the inward end of the corresponding support block. In this embodiment, the first bracket 9 is an inverted U-shaped frame and is installed on the skeleton by bolts. The support block 11 is hinged in the internal space of the inverted U-shaped frame. The spacing distances between adjacent support blocks are the same, and the inward end of the support block 11 extends out of the U-shaped frame, and the outward end extends out of the U-shaped frame (supporting state). Usually, the center of gravity of the support block 11 is located outside the hinge point. The number of support blocks on each first bracket is four, and four overlapping threshold beams are also loaded at the same time. The linkage block 10 is arranged between two adjacent support blocks 11, the lower end of the linkage block 10 is hingedly connected to the outward end of the support block of the lower layer, and the upper end of the linkage block 10 is provided with a limit groove 13 which is hingedly connected to the outward end of the support block of the upper layer. In the supporting state, the outward end of the upper support block is located at the high point of the limit groove of the linkage block. Each pressing frame includes a second bracket 14 installed on the frame, the second bracket 14 extends vertically upward, and a plurality of pressing blocks 15 are arranged at intervals along the height direction on the second bracket 14, and the extended end of the pressing block 15 is an elastic section 16. In this embodiment, the spacing distance between adjacent pressing blocks is the same, and there are four pressing blocks on each second bracket.

[0039] In order to ensure the quality of the threshold beam, the inward end of the support block 11 and the elastic section of the pressing block 15 are both covered with rubber sleeves.

[0040] Example 2

[0041] The method for loading and unloading a sill beam using the universal sill beam loading and unloading carrier of Example 1 comprises the following steps:

[0042] 1) According to the specifications of the threshold beam, adjust the positions of the first support frame, the second support frame, the third support frame, and the fourth support frame, and each support block is located within the projection range of the corresponding support frame (that is, each support block is in a vertical state, and the outward end is downward);

[0043] 2) Four threshold beams are stacked and placed on top of each other, with pads placed between adjacent layers of threshold beams to form a threshold beam pile, with hanging ropes lapped at both ends of the threshold beam pile;

[0044] 3) Move the threshold beam stack by hoisting to the range surrounded by each support frame;

[0045] 4) Move the threshold beam stack downward until the threshold beam is located above the corresponding support block, push the support block on the top layer to a horizontal state, and link other support blocks to a horizontal state;

[0046] 5) Continue to move the threshold beam stack downward until the support blocks of each layer are limited by the limit rods and the elastic sections of the pressing blocks of each layer are pressed tightly against the upper surface of the corresponding threshold beam, thus completing the loading;

[0047] 6) After the transfer is in place, the threshold beam stack is moved upward by hoisting, the elastic sections of each pressing block give way, and each supporting block is reset to the projection range of the corresponding supporting frame.

Claims

1. A universal sill beam loading and unloading vehicle, characterized in that: The invention comprises a base frame (1), wherein at least one set of positioning mechanisms (2) is arranged on the base frame (1). The positioning mechanism (2) comprises a first support frame (3), a second support frame (4), a third support frame (5), and a fourth support frame (6) having the same structure, and a first pressing frame (7) and a second pressing frame (8) having the same structure. The first support frame (3) and the second support frame (4) correspond to the two ends of one side of the straight line segment of the threshold beam and can be moved along the width direction of the threshold beam; the third support frame (5) and the fourth support frame (6) respectively correspond to the extended ends of the two branch line segments of the threshold beam and can be moved along the width direction of the threshold beam. The first pressing frame (7) and the second pressing frame (8) correspond to the two ends of the straight section of the threshold beam respectively. Each support frame comprises a first support (9) and a linkage block (10) mounted on a base frame, wherein the first support (9) extends vertically upward, a plurality of support blocks (11) are hingedly arranged at intervals along the height direction on the first support (9), and a limiting rod (12) is arranged below the inward end of the corresponding support block, the linkage block (10) is arranged between two adjacent support blocks (11), the lower end of the linkage block (10) is hingedly connected to the outward end of the support block of the lower layer, and the upper end of the linkage block (10) is provided with a limiting groove (13) which is hingedly connected to the outward end of the support block of the upper layer, Each pressing frame comprises a second bracket (14) mounted on the frame, the second bracket (14) extending vertically upward, a plurality of pressing blocks (15) are arranged on the second bracket (14) at intervals along the height direction, and the extending end of the pressing block (15) is an elastic section (16).

2. The universal door sill beam loading and unloading vehicle according to claim 1, characterized in that: The number of the positioning mechanisms (2) is two groups, which are symmetrically distributed along the center of the base frame (1).

3. The universal door sill beam loading and unloading vehicle according to claim 1, characterized in that: The center of gravity of the support block (11) is located outside the hinge point.

4. The universal door sill beam loading and unloading vehicle according to claim 1, characterized in that: The first bracket (9) is an inverted U-shaped frame, the support block (11) is hinged in the inner space of the inverted U-shaped frame, and the inward end of the support block (11) extends out of the U-shaped frame, and the outward end extends out of the U-shaped frame.

5. The universal door sill beam loading and unloading vehicle according to claim 1, characterized in that: The base frame (1) comprises four columns (17) arranged in a matrix, and a frame (18) connected between the four columns (17); an inverted support bowl (19) is arranged at the bottom of the column (17); a positioning frame (20) for inserting a forklift fork arm is arranged in the middle of the bottom surface of the frame (18); and fixed wheels (21) are respectively arranged at both ends of a short side of the bottom surface of the frame (18), and universal wheels (22) are respectively arranged at both ends of the other short side.

6. The universal door sill beam loading and unloading vehicle according to claim 5, characterized in that: A traction hook (23) is provided in the middle of a short side of the frame (18).

7. The universal door sill beam loading and unloading vehicle according to claim 1, characterized in that: The inward end of the support block (11) and the elastic section of the pressing block (15) are both covered with rubber sleeves.

8. A method for loading and unloading a sill beam using any universal sill beam loading and unloading vehicle according to any one of claims 1 to 7, characterized in that: The following steps are involved: 1) According to the specifications of the threshold beam, adjust the positions of the first support frame, the second support frame, the third support frame, and the fourth support frame, and each support block is located within the projection range of the corresponding support frame; 2) A corresponding number of threshold beams are stacked and spacers are arranged between adjacent layers of threshold beams to form a threshold beam stack; 3) Move the threshold beam stack to the range surrounded by each support frame; 4) Move the threshold beam stack downward until the threshold beam is located above the corresponding support block, push the support block on the top layer to a horizontal state, and link other support blocks; 5) Continue to move the threshold beam stack downward until the support blocks of each layer are limited by the limit rods and the elastic sections of the pressing blocks of each layer are pressed tightly against the upper surface of the corresponding threshold beam, thus completing the loading; 6) After the transfer is in place, the threshold beam stack is moved upward, the elastic sections of each pressing block give way, and each supporting block is reset to the projection range of the corresponding supporting frame.

9. The method according to claim 8, characterized in that In step 3) and step 4), the threshold beam stack is moved downward by hoisting, and in step 6), the threshold beam is moved upward by hoisting.

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