Pull rod type high-speed lifting roller bed

Abstract

The utility model provides a pull rod type high-speed lifting roller bed which comprises a base, a lifting mechanism arranged on the base and a conveying roller bed installed on the lifting mechanism, the lifting mechanism comprises a front lifting mechanism and a rear lifting mechanism, the front lifting mechanism is arranged in the middle of the base and comprises a front rocker, and the rear lifting mechanism comprises a rear rocker and a rear rocker. The middle of the front rocker is hinged to the base, and the top of the front rocker is slidably mounted on the conveying roller bed. The rear lifting mechanism is arranged on the rear portion of the base and comprises a rear rocker and a rear swing rod. A driving device is installed on the front portion of the base, the front lifting mechanism and the rear lifting mechanism are adopted to synchronously lift the conveying roller bed in a one-time pulling operation state, the whole mechanism is compact in structure, and lifting adjustment is more efficient. Meanwhile, the balance cylinder is adopted for assisting in pulling adjustment of the first connecting rod, small adjusting external force is achieved, and the adjusting process is stable.

Description

Technical Field

[0001] The utility model relates to the field of automobile body-in-white manufacturing, in particular to a pull-rod type high-speed lifting roller bed. Background Art

[0002] The roller bed conveying system is an important transfer device in the automobile body-in-white manufacturing production line. Its transfer efficiency directly determines the operation rhythm of processes such as body floor welding in body-in-white manufacturing. The existing lifting and lowering mechanisms of the roller bed conveying system have complex structures, low operation efficiency, and require high-power motors to perform actions, occupying a large space. Content of the Utility Model

[0003] The technical problem to be solved by the utility model is that the existing lifting and adjusting structure of the roller bed conveying system is complex and the operation efficiency is relatively low. The utility model provides a pull-rod type high-speed lifting roller bed to solve the above problems.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a pull-rod type high-speed lifting roller bed, including a base, a lifting mechanism arranged on the base, and a conveying roller bed installed on the lifting mechanism. The lifting mechanism includes a front lifting mechanism and a rear lifting mechanism. The front lifting mechanism is arranged in the middle of the base and includes a front rocker. The middle of the front rocker is hinged and installed on the base, and the top of the front rocker is slidably installed on the conveying roller bed. The rear lifting mechanism is arranged at the rear of the base and includes a rear rocker and a rear swing rod. The middle of the rear rocker is hinged and installed on the base, the top of the rear rocker is hinged to the middle of the rear swing rod, the bottom of the rear swing rod is slidably installed on the base, and the top of the rear swing rod is hinged and installed on the conveying roller bed. A driving device is installed at the front of the base, and the driving device includes a crank, a first connecting rod, and a second connecting rod. One end of the first connecting rod is hinged to the end of the crank, and the other end is hinged to the bottom of the front rocker. One end of the second connecting rod is hinged to the bottom of the front rocker, and the other end is hinged to the bottom of the rear rocker. The crank rotates under the drive of a driving motor.

[0005] Further: a lower chute is arranged at the rear of the base, a lower pulley is arranged at the lower part of the rear swing rod, and the lower pulley rolls in the lower chute. An upper chute is arranged at the front of the conveying roller bed, and an upper pulley is arranged at the upper part of the front rocker, and the upper pulley rolls in the upper chute.

[0006] Further: a balance cylinder is also arranged on the base. One end of the balance cylinder is hinged and installed on the base, and the other end is hinged and installed on the bottom of the front rocker.

[0007] Further: The conveying roller bed includes a conveying mechanism and a blocking and positioning mechanism. The conveying mechanism includes a plurality of conveying rollers arranged in parallel in sequence. The plurality of conveying rollers are rotatably installed on the tabletop of the conveying roller bed. A synchronous pulley is provided on each conveying roller, and a synchronous belt is provided between the synchronous pulleys on two adjacent conveying rollers. The conveying mechanism further includes a conveying motor provided on the conveying roller bed. A driving pulley is provided at the output end of the conveying motor, and a synchronous belt is provided between the driving pulley and one of the synchronous pulleys.

[0008] Further: The conveying mechanism further includes guide wheels, which are distributed on both sides of the conveying roller bed.

[0009] Further: The blocking and positioning mechanism includes a blocker and a positioning pin. The positioning pin is installed on a positioning cylinder, and the positioning cylinder is vertically installed below the tabletop of the conveying roller bed.

[0010] Further: The blocker includes a blocking seat, a blocking bracket, a blocking cylinder, a blocking guide post and a blocking block. The blocking bracket is vertically slidably installed on the blocking seat. The blocking cylinder is vertically fixedly installed on the blocking seat. The blocking guide post is fixedly provided on the blocking bracket and is slidably connected to the blocking seat. A blocking fixing sleeve is provided on the blocking bracket, and the blocking fixing sleeve is tightly installed on the blocking bracket through a nut. The blocking block is horizontally slidably installed in the blocking fixing sleeve. A return spring is provided between the blocking fixing sleeve and the blocking block. A limit ring for preventing the return spring from pushing the blocking block outwards is installed at the end of the blocking block.

[0011] The beneficial effect of the present utility model is that, by providing a pull-rod type high-speed lifting roller bed, the present utility model adopts a front lifting mechanism and a rear lifting mechanism to synchronously lift the conveying roller bed in a single pulling operation state. The overall mechanism has a compact structure and more efficient lifting adjustment. At the same time, a balance cylinder is used to assist the first connecting rod for pulling adjustment, with a smaller adjustment external force and a stable adjustment process. Description of the Drawings

[0012] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0013] Figure 1 is a structural schematic diagram of a pull-rod type high-speed lifting roller bed;

[0014] Figure 2 and Figure 3 is Figure 1 a structural schematic diagram with the conveying roller bed component part in

[0015] Figure 4 hidden;

[0016] Figure 5 is Figure 2 The partial enlarged view at position A in

[0017] Figure 6 is Figure 2 The partial enlarged view at position B in

[0018] Figure 7 The structural schematic diagram of the stopper

[0019] Figure 8 The structural schematic diagram of the installation of the blocking block

[0020] In the figure, 1 is the base, 2 is the lifting mechanism, 3 is the conveying roller bed, 4 is the front lifting mechanism, 5 is the rear lifting mechanism, 6 is the front rocker, 7 is the rear rocker, 8 is the rear swing rod, 9 is the driving device, 10 is the crank, 11 is the first connecting rod, 12 is the second connecting rod, 13 is the lower chute, 14 is the lower pulley, 15 is the upper chute, 16 is the upper pulley, 17 is the balance cylinder, 18 is the conveying mechanism, 19 is the blocking and positioning mechanism, 20 is the conveying roller, 21 is the synchronous pulley, 22 is the synchronous belt, 23 is the conveying motor, 24 is the driving wheel, 25 is the guiding wheel, 26 is the stopper, 27 is the positioning pin, 28 is the positioning cylinder, 29 is the blocking seat, 30 is the blocking bracket, 31 is the blocking cylinder, 32 is the blocking guiding column, 33 is the blocking block, 34 is the blocking fixing sleeve, 35 is the return spring, and 36 is the limiting ring. Specific embodiments

[0021] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, in which the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation of the present invention. On the contrary, the embodiments of the present invention include all changes, modifications and equivalents falling within the spirit and scope of the appended claims.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0023] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and should not be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, in the description of the present utility model, unless otherwise stated, the meaning of "a plurality of" is two or more than two.

[0024] Any process or method description shown in a flowchart or described otherwise herein can be understood to represent a module, segment, or portion of code including one or more executable instructions for implementing a specific logical function or process. The scope of the preferred embodiments of the present utility model includes additional implementations, where functions can be executed in a substantially simultaneous manner or in a reverse order according to the functions involved, rather than in the order shown or discussed, which should be understood by those skilled in the art to which the embodiments of the present utility model belong.

[0025] As Figures 1 to 8 shown, the present utility model provides a pull-rod type high-speed lifting roller bed, which includes a base 1, a lifting mechanism 2 arranged on the base 1, and a conveying roller bed 3 installed on the lifting mechanism 2. The lifting mechanism 2 includes a front lifting mechanism 4 and a rear lifting mechanism 5. The front lifting mechanism 4 is arranged in the middle of the base 1 and includes a front rocker 6. The middle of the front rocker 6 is hinged and installed on the base 1, and the top of the front rocker 6 is slidably installed on the conveying roller bed 3;

[0026] The rear lifting mechanism 5 is arranged at the rear of the base 1 and includes a rear rocker 7 and a rear swing rod 8. The middle of the rear rocker 7 is hinged and installed on the base 1. The top of the rear rocker 7 is hinged to the middle of the rear swing rod 8. The bottom of the rear swing rod 8 is slidably installed on the base 1, and the top of the rear swing rod 8 is hinged and installed on the conveying roller bed 3;

[0027] A driving device 9 is installed at the front of the base 1. The driving device 9 includes a crank 10, a first connecting rod 11, and a second connecting rod 12. One end of the first connecting rod 11 is hinged to the end of the crank 10, and the other end is hinged to the bottom of the front rocker 6; One end of the second connecting rod 12 is hinged to the bottom of the front rocker 6, and the other end is hinged to the bottom of the rear rocker 7; The crank 10 rotates under the drive of a driving motor.

[0028] The pull-rod type high-speed lifting roller bed is generally used in the conveying link of the automobile body floor welding production line. It mainly combines and links the front rocker 6 and the rear rocker 7 as a whole through the second connecting rod 12, and drives the up-and-down lifting of the conveying roller bed 3 through the first connecting rod 11. The specific operation method is that the driving motor drives the crank 10 to rotate. By the rotation of the crank 10, the first connecting rod 11 is pulled back and forth. The second connecting rod 12 integrates the front rocker 6 and the rear rocker 7 together, and can swing along the hinge points in the middle of each other under the front and back pulling of the first connecting rod 11. The front rocker 6 and the rear rocker 7 can amplify the pulling distance of the crank 10, and swing synchronously with the front rocker 6 and the rear rocker 7.

[0029] At the same time, since there is a sliding connection at one connecting part of both the front lifting mechanism 4 and the rear lifting mechanism 5. Specifically, the bottom of the rear swing rod 8 is slidably installed on the base 1, and the top of the front rocker 6 is slidably installed on the conveying roller bed 3. Such a sliding connection can avoid over-positioning of the conveying roller bed 3 when the front rocker 6 and the rear rocker 7 swing simultaneously. The conveying roller bed 3 can adaptively adjust its position and state, and can drive the conveying roller bed 3 to lift or lower in this way. This driving method has a faster lifting or lowering speed compared to the conventional method of the conventional two-end synchronous lifting mechanism, and the driving structure is simpler and more convenient.

[0030] A lower chute 13 is provided at the rear part of the base 1, and a lower pulley 14 is provided at the lower part of the rear swing rod 8. The lower pulley 14 rolls in the lower chute 13; an upper chute 15 is provided at the front part of the conveying roller bed 3, and an upper pulley 16 is provided at the upper part of the front rocker 6. The upper pulley 16 rolls in the upper chute 15.

[0031] By the rolling of the lower pulley 14 in the lower chute 13 and the rolling of the upper pulley 16 in the upper chute 15, this way of being able to adaptively adjust the position can avoid over-positioning of the conveying roller bed 3 when the crank 10 is pulled and adjusted. The conveying roller bed 3 adaptively adjusts its position, and the adjustment process of the conveying roller bed 3 is smooth and stable.

[0032] A balance cylinder 17 is further provided on the base 1. One end of the balance cylinder 17 is hinged and installed on the base 1, and the other end is hinged and installed at the bottom of the front rocker 6. The balance cylinder 17 plays an auxiliary pushing and pulling role when the crank 10 rotates to adjust the conveying roller bed 3. Because the pushing and pulling of the first connecting rod 11 is mainly driven by the crank 10 mechanism, and the crank 10 applies a non-linear force to the pushing and pulling of the first connecting rod 11 at each point during the rotation process. In order to avoid the first connecting rod 11 being able to push and pull the front rocker 6 and the rear rocker 7 smoothly, by increasing the function of the balance cylinder 17, the pushing and pulling impact can be buffered during the pushing and pulling process, and the smooth lifting adjustment of the conveying roller bed 3 can be ensured.

[0033] The conveying roller bed 3 includes a conveying mechanism 18 and a blocking and positioning mechanism 19. The conveying mechanism 18 includes a plurality of conveying rollers 20 arranged in parallel in sequence. The plurality of conveying rollers 20 are rotatably mounted on the table of the conveying roller bed 3. A synchronous wheel 21 is arranged on each conveying roller 20. A synchronous belt 22 is arranged between the synchronous wheels 21 on two adjacent conveying rollers 20. The conveying mechanism 18 also includes a conveying motor 23 arranged on the conveying roller bed 3. A driving wheel 24 is arranged on the output end of the conveying motor 23. A synchronous belt 22 is arranged between the driving wheel 24 and one of the synchronous wheels 21.

[0034] When a material plate is transported on the conveying roller bed 3, the driving wheel 24 is driven by the conveying motor 23 to rotate, and the synchronous wheels 21 on each conveying roller 20 are driven by the synchronous belt 22. Since the synchronous wheels 21 on adjacent conveying rollers 20 are connected to each other by the synchronous belt 22, the rotation of the driving wheel 24 will drive the synchronous wheels 21 on each conveying roller 20 to rotate in the same direction, that is, drive the conveying rollers 20 to rotate in the same direction, so that the material plate can be transmitted. The material plate can be buffered in place or positioned at a fixed point through the conveying mechanism 18 and the blocking and positioning mechanism 19.

[0035] The conveying mechanism 18 further includes guide wheels 25, which are arranged on both sides of the conveying roller bed 3. The guide wheels 25 help the material plate to move forward smoothly along the conveying direction on the conveying roller 20, avoiding abnormalities such as deviation of the moving direction of the material plate.

[0036] The blocking and positioning mechanism 19 includes a blocker 26 and a positioning pin 27. The positioning pin 27 is mounted on a positioning cylinder 28. The positioning cylinder 28 is vertically mounted below the table of the conveying roller bed 3. During normal conveying, the positioning pin 27 is retracted, and the overall height is lower than the height of the conveying roller 20 table, which will not affect the normal conveying of the material board. When the material board stops at the work station and needs to be positioned, the positioning cylinder 28 pushes the positioning pin 27 upward and inserts it into the corresponding position of the material board, so that the positioning operation of the material board can be completed.

[0037] The stopper 26 includes a stopper seat 29, a stopper bracket 30, a stopper cylinder 31, a stopper guide post 32 and a stopper block 33. The stopper bracket 30 is vertically slidably mounted on the stopper seat 29. The stopper cylinder 31 is vertically fixedly mounted on the stopper seat 29. The stopper guide post 32 is fixedly arranged on the stopper bracket 30 and is slidably connected with the stopper seat 29. A stopper fixing sleeve 34 is arranged on the stopper bracket 30. The stopper fixing sleeve 34 is tightly mounted on the stopper bracket 30 through a nut. The stopper block 33 is horizontally slidably mounted in the stopper fixing sleeve 34. A return spring 35 is arranged between the stopper fixing sleeve 34 and the stopper block 33. A limit ring 36 for preventing the return spring 35 from pushing the stopper block 33 outwards is mounted at the end of the stopper block 33.

[0038] This stopper block 33 adopts a buffer design with a return spring 35. When the material plate impacts the stopper block 33, the stopper block 33 compresses the return spring 35 to buffer the impact of the material plate, enabling the material plate to decelerate smoothly and avoiding misalignment or even damage to the material plate or the materials mounted on it due to vibration caused by hard contact. When the material plate moves away, the stopper block 33 can also be reset in time under the push of the return spring 35 to wait for the next deceleration of the material plate by blocking.

[0039] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0040] Based on the above inspiration from the ideal embodiment of the present utility model, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A pull-rod type high-speed lifting roller bed, comprising a base (1), a lifting mechanism (2) arranged on the base (1), and a conveying roller bed (3) installed on the lifting mechanism (2), characterized in that: The lifting mechanism (2) includes a front lifting mechanism (4) and a rear lifting mechanism (5); The front lifting mechanism (4) is arranged in the middle of the base (1) and includes a front rocker (6). The middle of the front rocker (6) is hinged to the base (1), and the top of the front rocker (6) is slidably mounted on the conveying roller bed (3); The rear lifting mechanism (5) is arranged at the rear of the base (1) and includes a rear rocker (7) and a rear swing rod (8). The middle of the rear rocker (7) is hinged to the base (1), the top of the rear rocker (7) is hinged to the middle of the rear swing rod (8), the bottom of the rear swing rod (8) is slidably mounted on the base (1), and the top of the rear swing rod (8) is hinged to the conveying roller bed (3); A driving device (9) is installed at the front of the base (1). The driving device (9) includes a crank (10), a first connecting rod (11) and a second connecting rod (12). One end of the first connecting rod (11) is hinged to the end of the crank (10), and the other end is hinged to the bottom of the front rocker (6); One end of the second connecting rod (12) is hinged to the bottom of the front rocker (6), and the other end is hinged to the bottom of the rear rocker (7); The crank (10) rotates under the drive of a driving motor.

2. The pull-rod type high-speed lifting roller bed according to claim 1, characterized in that: A lower chute (13) is arranged at the rear of the base (1), a lower pulley (14) is arranged at the lower part of the rear swing rod (8), and the lower pulley (14) rolls in the lower chute (13); An upper chute (15) is arranged at the front of the conveying roller bed (3), an upper pulley (16) is arranged at the upper part of the front rocker (6), and the upper pulley (16) rolls in the upper chute (15).

3. The pull-rod type high-speed lifting roller bed according to claim 2, characterized in that: A balance cylinder (17) is also arranged on the base (1). One end of the balance cylinder (17) is hinged to the base (1), and the other end is hinged to the bottom of the front rocker (6).

4. The pull-rod type high-speed lifting roller bed according to claim 1, wherein: The conveying roller bed (3) includes a conveying mechanism (18) and a blocking and positioning mechanism (19). The conveying mechanism (18) includes a plurality of conveying rollers (20) arranged in parallel in sequence. The plurality of conveying rollers (20) are rotatably mounted on the tabletop of the conveying roller bed (3). A synchronous pulley (21) is arranged on each conveying roller (20), and a synchronous belt (22) is arranged between the synchronous pulleys (21) on two adjacent conveying rollers (20). The conveying mechanism (18) also includes a conveying motor (23) arranged on the conveying roller bed (3). A driving wheel (24) is arranged at the output end of the conveying motor (23), and a synchronous belt (22) is arranged between the driving wheel (24) and one of the synchronous pulleys (21).

5. The pull-rod type high-speed lifting roller bed according to claim 4, characterized in that: The conveying mechanism (18) also includes guide wheels (25), and the guide wheels (25) are distributed on both sides of the conveying roller bed (3).

6. The pull-rod type high-speed lifting roller bed according to claim 4, characterized in that: The blocking and positioning mechanism (19) includes a blocker (26) and a positioning pin (27). The positioning pin (27) is installed on a positioning cylinder (28), and the positioning cylinder (28) is vertically installed below the tabletop of the conveying roller bed (3).

7. The pull-rod type high-speed lifting roller bed according to claim 6, characterized in that: The blocker (26) includes a blocking seat (29), a blocking bracket (30), a blocking cylinder (31), a blocking guide post (32) and a blocking block (33). The blocking bracket (30) is vertically and slidably mounted on the blocking seat (29). The blocking cylinder (31) is vertically and fixedly mounted on the blocking seat (29). The blocking guide post (32) is fixedly arranged on the blocking bracket (30), and the blocking guide post (32) is slidably connected with the blocking seat (29). A blocking fixing sleeve (34) is arranged on the blocking bracket (30). The blocking fixing sleeve (34) is tightly mounted on the blocking bracket (30) through a nut. The blocking block (33) is horizontally slidably mounted in the blocking fixing sleeve (34). A return spring (35) is arranged between the blocking fixing sleeve (34) and the blocking block (33). A limiting ring (36) for preventing the return spring (35) from pushing the blocking block (33) outwards is mounted at the end of the blocking block (33).

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