Adjustable forklift inner gantry positioning and assembling die

Abstract

The utility model relates to an adjustable forklift inner gantry positioning and assembling die, which belongs to the technical field of forklift assembling tools, and comprises a supporting seat and two pairs of elastic actuators, a strip-shaped stopper is arranged between each pair of elastic actuators, an alignment frame is arranged at one longitudinal end of the supporting seat, the middle of the stopper is rotatably connected with the supporting seat, and the elastic actuators are arranged on the alignment frame. An inner gantry of the forklift has two longitudinal beams positioned between the stopper and the pair of elastic actuators. The transverse positions of the longitudinal beams are positioned and adjusted through the stopping pieces and the paired elastic actuators, after the stopping pieces are rotated, the longitudinal beams can be transversely adjusted under the action of the elastic actuators, the two adjusted longitudinal beams are symmetrical to each other, the longitudinal beam assembling convenience and the inner door frame assembling precision are improved, and after the inner door frame is assembled, the longitudinal beams can be transversely adjusted. The inner door frame can be lifted after the stopping piece is rotated, and the production efficiency of the forklift is improved.

Description

Technical Field

[0001] This utility model belongs to the field of forklift assembly tooling technology, specifically relating to an adjustable forklift inner mast positioning and assembly mold. Background Technology

[0002] The forklift inner mast has two longitudinal beams for mounting the fork carriage. During forklift manufacturing, specific forklift assembly fixtures are required to assemble the inner mast. Traditional forklift inner mast assembly fixtures typically use fixed clamp structures, relying mainly on manual adjustment and positioning. During assembly, the longitudinal beams are positioned using rigid slots or fixed blocks, requiring individual positioning of each of the two longitudinal beams. After the longitudinal beams are positioned, auxiliary components such as the steel base, roller axles, and lugs are installed between the two longitudinal beams to complete the assembly of the inner mast. The installation of the inner mast, however, requires multiple independent fixtures to complete in stages.

[0003] However, traditional forklift inner mast assembly fixtures have the following shortcomings: First, during assembly, each of the two longitudinal beams must be individually positioned, and symmetry must be ensured through repeated measurements and adjustments. This adjustment is inefficient and makes it difficult to guarantee the symmetry accuracy of the two longitudinal beams, easily leading to overall deviation of the inner mast due to operational errors. Second, when assembling the inner mast longitudinal beams, a fixed positioning structure is generally used, which is embedded in the groove of the longitudinal beam for positioning. After assembly, the positioning structure needs to be removed when lifting the inner mast, causing operational inconvenience. Third, multi-component assembly lacks integrated positioning design. For example, functions such as steel bottom limit and lug suspension require additional auxiliary tools, which not only increases operational complexity but also easily leads to cumulative errors due to inconsistent positioning benchmarks, affecting the overall assembly quality and reliability of the inner mast. These defects seriously restrict the improvement of forklift assembly efficiency and the guarantee of product consistency. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable forklift inner mast positioning and assembly mold to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] An adjustable forklift inner mast positioning and assembly mold, the inner mast having two longitudinal beams, the mold including a support base, two pairs of elastic actuators disposed on both longitudinal sides of the support base, a strip-shaped stop between each pair of elastic actuators, and an alignment frame at one longitudinal end of the support base, the output end of the elastic actuator being able to move laterally along the support base and having elasticity, the middle part of the stop being rotatably connected to the support base, the two longitudinal beams being positioned between the stop and the paired elastic actuators, and the longitudinal beams abutting against the alignment frame.

[0007] As a further optimization of this utility model, the inner gantry also has a steel base, and two alignment frames are provided, with a limiting component between the two alignment frames, one end of which penetrates the steel base.

[0008] As a further optimization of this utility model, the limiting component includes a mounting bracket fixed on the support base, a limiting sleeve sleeved on the outside of the mounting bracket, a limiting pin penetrating the limiting sleeve and the mounting bracket, and the limiting pin being embedded in the steel base.

[0009] As a further optimization of this utility model, the inner gantry also has a roller shaft, and two ring-shaped assemblies are symmetrically arranged on the support base. The ring-shaped assemblies include a support frame fixed on the support base, a linear drive fixed on one side of the support frame, and a positioning column fixed on the output end of the linear drive and used to suspend the roller shaft.

[0010] As a further optimization of this utility model, the positioning post is slidably disposed on the other side of the support frame, and a protective ring is slidably disposed on the positioning post, and an annular gap corresponding to the roller shaft is formed between the protective ring and the positioning post.

[0011] As a further optimization of this utility model, the inner gantry also has two lugs, and two mounting brackets are symmetrically provided on the support base. The mounting bracket includes a bracket fixed on the support base, a swing arm hinged to the top of the bracket, and a hanging rod provided at the end of the swing arm for suspending the lugs.

[0012] As a further optimization of this utility model, the inner gantry also has a connector and two lugs, and the mold also includes multiple positioning rulers and a hanging plate for mounting the lugs. One side of the positioning ruler abuts against the alignment frame, and the other side of the positioning ruler abuts against the hanging plate or the connector.

[0013] As a further optimization of this utility model, the support base includes a support plate and two sets of support rollers disposed on the support plate, the support rollers being used to support the longitudinal beam.

[0014] As a further optimization of this utility model, the stop member includes a swing frame hinged to the support plate in the middle, and both ends of the swing frame are provided with stop posts, and the ends of the stop posts are provided with ball heads. The support plate is provided with a damping shaft corresponding to the swing frame.

[0015] As a further optimization of this utility model, the elastic actuator is a cylinder.

[0016] The beneficial effects of this utility model are as follows:

[0017] 1) This utility model uses a positioning frame to constrain the longitudinal beam longitudinally, and uses a stop and a pair of elastic actuators to position and adjust the lateral position of the longitudinal beam. The elastic actuators abut the longitudinal beam against the stop. After rotating the stop, the longitudinal beam can be adjusted laterally under the action of the elastic actuators. The two longitudinal beams after adjustment are symmetrical to each other, saving the assembly process of the longitudinal beam and improving the assembly accuracy of the inner gantry.

[0018] 2) This utility model uses a rotary stop in conjunction with an elastic actuator to position the longitudinal beam. After the inner gantry is assembled, the stop can be rotated to lift the inner gantry, avoiding interference with the transportation of the inner gantry. When lifting the inner gantry, it is not necessary to remove the stop and other positioning structures from the support, thus improving the processing efficiency of the inner gantry.

[0019] 3) This utility model uses a limiting component to constrain the position of the steel base, uses a ring assembly to position and assemble the roller shaft, uses a mounting bracket to position the lug, and uses a positioning ruler to position the connecting parts, which further improves the convenience of assembling the inner frame and reduces positioning errors. When welding the roller shaft, the ring assembly can be used to position and protect it during welding, thereby improving the welding quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the inner gantry frame of this utility model, which is positioned, assembled, and formed.

[0021] Figure 2 This is a schematic diagram of the overall structure of the positioning and assembly mold of this utility model;

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0023] Figure 4 This is a schematic diagram of the limiting component structure of this utility model;

[0024] Figure 5 This is a schematic diagram of the working state of the assembly connector of this utility model;

[0025] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0026] Figure 7 This is a schematic diagram of the overall structure of an embodiment of the present invention without a mounting bracket;

[0027] Figure 8 This is a schematic diagram of the positioning ruler structure of this utility model;

[0028] Figure 9 This is a schematic diagram of the positioning ruler structure of this utility model.

[0029] In the diagram: 1. Support base; 2. Flexible actuator; 3. Stop; 4. Alignment frame; 5. Limiting assembly; 6. Ring assembly; 7. Hanging frame; 8. Positioning ruler; 9. Hanging plate; 11. Support plate; 12. Support roller; 31. Swing frame; 32. Stop post; 33. Ball head; 51. Mounting frame; 52. Limiting sleeve; 53. Limiting pin; 54. Waist hole; 61. Support frame; 62. Linear drive component; 63. Positioning post; 64. Protective ring; 71. Bracket; 72. Swing arm; 73. Hanging rod; 81. Positioning ruler one; 82. Positioning ruler two; F1. Longitudinal beam; F2. Steel base; F3. Roller shaft; F4. Lug; F5. Connecting component. Detailed Implementation

[0030] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0031] Example

[0032] like Figure 1 and Figure 2 As shown, an adjustable forklift inner mast positioning and assembly mold includes a support base 1, which consists of a support plate 11 and two sets of equal-height support rollers 12 rotatably mounted above the support plate 11. A pair of elastic actuators 2 are provided on both longitudinal sides of the support plate 11, and a strip-shaped stop 3 is provided between each pair of elastic actuators 2. Two alignment frames 4 are fixedly mounted on one longitudinal end of the support plate 11. The output end of the elastic actuator 2 can move laterally along the support base 1 and is elastic; in this embodiment, the elastic actuator 2 is preferably a cylinder. The middle part of the stop 3 is rotatably connected to the support base 1. Specifically, as... Figure 5 and Figure 6 As shown, the stop member 3 includes a swing frame 31 that is hinged to the support plate 11 in the middle. A pair of stop posts 32 are fixed at both ends of the swing frame 31, and ball heads 33 are fixed at the ends of the stop posts 32. The support plate 11 is provided with a damping shaft that is interference-fitted with the swing frame 31. The middle part of the swing frame 31 is hinged to the support plate 11 through the damping shaft.

[0033] Please see Figure 1In this embodiment, the inner gantry has two longitudinal beams F1. A groove is provided on the side of each longitudinal beam F1 opposite to the stop 3. A steel base F2, a connecting piece F5, and a steel top are sequentially fixed between the two longitudinal beams F1 from one end to the other. Lugs F4 are fixedly provided on the top of each of the two longitudinal beams F1. Cylindrical roller shafts F3 are fixedly installed on the opposite sides of each of the two longitudinal beams F1, close to the steel base F2. The roller shafts F3 are used to install rollers, ensuring that the inner gantry can move up and down along the outer gantry channel steel guide rail. The two longitudinal beams F1 are positioned between the stop 3 and the paired elastic actuators 2, and abut against the alignment frame 4. The length of the support roller 12 is greater than the width of the longitudinal beam F1 to prevent the longitudinal beam F1 from sliding off the support roller 12 onto the support plate 11 when the longitudinal beam F1 is moved.

[0034] With the longitudinal beams F1 assembled, ensure the stop 3 is approximately perpendicular to the longitudinal centerline of the support plate 11. Place the two longitudinal beams F1 on the two sets of support rollers 12, and abut the ends of the longitudinal beams F1 against the alignment frame 4. Then, activate the cylinders, with the output ends of the four cylinders abutting the sides of the two longitudinal beams F1, so that the grooves of the two longitudinal beams F1 are tightly against the ball heads 33 of the two stop 3. Next, measure the distance between one end of the two longitudinal beams F1 and the distance between the other ends of the two longitudinal beams F1. If the measured distance does not meet the design standard of the inner gantry, tap the swing frame 31 of the stop 3 clockwise or counterclockwise to move the two longitudinal beams F1 closer or further apart. Then, measure the distance between the two longitudinal beams F1 again and determine whether further adjustment of the spacing between the two longitudinal beams F1 is needed based on the measured distance, until the measured distance meets the design standard. With the stop 3 perpendicular or approximately perpendicular to the support plate 11, the distance between the two ends of the stop 3 in the transverse direction of the support plate 11 is the design standard distance. During the striking process, under the action of the cylinder, the two longitudinal beams F1 remain in close contact with the stop 3. After the distance between the two longitudinal beams F1 is adjusted, if the ends of the longitudinal beams F1 move away from the alignment frame 4, the longitudinal beams F1 are moved longitudinally to abut against the alignment frame 4.

[0035] In other embodiments, the cylinder can be replaced with other types of actuators, as long as the output end of the actuator is a linear drive end and has a certain elasticity to meet the need for adjusting the distance between the two longitudinal beams F1. The stop member 3 can also only have a swing frame 31, without the stop post 32 and ball head 33. Furthermore, the swing frame 31 can be rotatably connected to the support plate 11 via a rotating shaft. In this case, a reset element such as a torsion spring is provided between the swing frame 31 and the support plate 11 to ensure that the rotated swing frame 31 can fit tightly against the longitudinal beam F1. If the surface of the support plate 11 is smooth, the support roller 12 may not be provided on the support plate 11 of the support base 1.

[0036] Furthermore, this embodiment also includes a limiting component 5 for assembling the steel base F2, a ring assembly 6 for assembling the roller shaft F3, a mounting bracket 7 for assembling the lug F4, and several positioning rulers 8 for assembling the connector F5.

[0037] like Figure 2-4 As shown, two alignment frames 4 are provided, and a limiting component 5 is provided between the two alignment frames 4. One end of the limiting component 5 penetrates through the steel base F2. Specifically, the limiting component 5 includes a mounting bracket 51 fixed to one end of the support plate 11 in the longitudinal direction, a limiting sleeve 52 sleeved on the outside of the mounting bracket 51, and a limiting pin 53 penetrating the limiting sleeve 52 and the mounting bracket 51. The limiting pin 53 is embedded in the steel base F2. The limiting sleeve 52 has a through hole with the same cross-sectional shape as the limiting pin 53. The mounting bracket 51 has a waist hole 54 corresponding to the limiting pin 53, which is vertically arranged on the mounting bracket 51.

[0038] When installing the steel base F2, insert the limiting pin 53 into the steel base F2. Then, move the limiting pin 53 upward along the waist hole 54 until the steel base F2 reaches its welding height. Next, weld both ends of the steel base F2 to the two longitudinal beams F1 respectively to complete the installation of the steel base F2. After installation, pull the limiting pin 53 out of the steel base F2. Under its own weight, the limiting pin 53 moves downward and fits against the bottom of the waist hole 54.

[0039] like Figure 3 As shown, two annular assemblies 6 are symmetrically arranged on the support base 1. Each annular assembly 6 includes a support frame 61 fixed to the support plate 11, a linear drive 62 fixed to one side of the support frame 61, and a positioning post 63 fixed to the output end of the linear drive 62 for suspending the roller shaft F3. The positioning post 63 is slidably disposed on the other side of the support frame 61, and a protective ring 64 is slidably disposed on the positioning post 63. The inner wall of one side of the protective ring 64 is in contact with the outer side of the positioning post 63, and an annular gap corresponding to the roller shaft F3 is formed between the inner wall of the other side of the protective ring 64 and the positioning post 63.

[0040] When installing roller shaft F3, it is fitted onto the end of positioning post 63 furthest from linear drive member 62. The positioning post 63 is moved by linear drive member 62, causing roller shaft F3 on positioning post 63 to move to the side of longitudinal beam F1, thus completing the positioning of roller shaft F3. Next, the root of roller shaft F3 is welded to longitudinal beam F1. During welding, protective ring 64 is fitted onto the outside of roller shaft F3 to protect it from welding. Protective ring 64 positions roller shaft F3 and prevents welding droplets or spatter from adhering to the surface of roller shaft F3.

[0041] Please see Figure 3Two mounting brackets 7 are symmetrically arranged on the support base 1. Each mounting bracket 7 includes a bracket 71 fixed to the support plate 11, a swing arm 72 hinged to the top of the bracket 71, and a hanging rod 73 fixed to the end of the swing arm 72 for suspending the lug F4. The lug F4 is provided with a through hole.

[0042] When installing lug F4, place lug F4 on hanging rod 73, rotate swing arm 72 to make lug F4 on hanging rod 73 fit with longitudinal beam F1, thus completing the positioning of lug F4. Then weld lug F4 to longitudinal beam F1 to complete the installation of lug F4.

[0043] like Figure 5-9 As shown, the mold also includes two positioning rulers 8 and a hanging plate 9. One side of the positioning ruler 8 abuts against the alignment frame 4, and the other side of the positioning ruler 8 abuts against the hanging plate 9 or the connecting piece F5. The positioning ruler 8 is divided into positioning ruler one 81 corresponding to the connecting piece F5 and positioning ruler two 82 corresponding to the hanging plate 9.

[0044] When installing connector F5, place the two ends of one side of positioning ruler 81 against the two alignment frames 4 respectively, install the support structure in the middle of support plate 11, place connector F5 on the support structure, and slide connector F5 so that it is in close contact with the two ends of the other side of positioning ruler 81 to complete the positioning of connector F5. Then weld connector F5 between the two longitudinal beams F1.

[0045] Figure 7 Another embodiment without the mounting bracket 7 is shown. In this embodiment, the lug F4 is assembled using a positioning ruler 82 in conjunction with the hanging plate 9. Two support rods for mounting the lug F4 are provided on one side of the hanging plate 9.

[0046] When assembling lugs F4, first suspend lugs F4 on lugs F4 of hanging plate 9, then place the two ends of one side of positioning ruler 2 82 against the two alignment frames 4 respectively, then place hanging plate 9 on the two longitudinal beams F1 and slide hanging plate 9 so that it abuts against the other end of positioning ruler 2 82, thereby completing the positioning of the two lugs F4 on one side of hanging plate 9, and then weld the two lugs F4 onto the two longitudinal beams F1 respectively.

[0047] Alternatively, in other embodiments, the limiting component 5, the ring assembly 6, the mounting bracket 7, and the positioning ruler 8 may be omitted. After positioning the longitudinal beam F1, the steel base F2, roller shaft F3, lug F4, and connector F5 are assembled in a conventional manner.

[0048] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. An adjustable forklift inner mast positioning assembly jig, the inner mast having two longitudinal beams, characterized by: The mold comprises a support base (1), two pairs of elastic actuators (2) arranged on the longitudinal sides of the support base (1), a strip-shaped stopper (3) arranged between each pair of elastic actuators (2), and a positioning frame (4) arranged at one end of the support base (1) in the longitudinal direction, the output end of the elastic actuator (2) is capable of moving in the transverse direction of the support base (1) and has elasticity, the middle part of the stopper (3) is rotationally connected with the support base (1), two longitudinal beams are arranged between the stopper (3) and the pair of elastic actuators (2), and the longitudinal beams abut against the positioning frame (4).

2. The internal mast positioning assembly fixture for a fork truck of claim 1, wherein: The inner door frame further comprises a steel bottom, the positioning frame (4) is provided with two positioning frames (4), and a limiting assembly (5) is arranged between the two positioning frames (4), one end of the limiting assembly (5) penetrates the steel bottom.

3. The internal mast positioning assembly fixture for a fork truck of claim 2, wherein: The limiting assembly (5) comprises a mounting frame (51) fixedly arranged on the support base (1), a limiting sleeve (52) sleeved on the outer side of the mounting frame (51), and a limiting pin (53) penetrating the limiting sleeve (52) and the mounting frame (51), and the limiting pin (53) is embedded in the steel bottom.

4. The internal mast positioning assembly fixture for a fork truck of claim 1, wherein: The inner door frame further comprises a roller shaft, two ring body assemblies (6) are symmetrically arranged on the support base (1), the ring body assembly (6) comprises a support frame (61) fixedly arranged on the support base (1), a linear drive (62) fixedly arranged on one side of the support frame (61), and a positioning column (63) fixedly arranged on the output end of the linear drive (62) and used for suspending the roller shaft.

5. The internal mast positioning assembly fixture for a fork truck as set forth in claim 4, wherein: The positioning column (63) is slidably arranged on the other side of the support frame (61), a protective ring (64) is slidably arranged on the positioning column (63), and an annular gap corresponding to the roller shaft is formed between the protective ring (64) and the positioning column (63).

6. The internal mast positioning assembly fixture for a fork truck of claim 1, wherein: The inner door frame further comprises two lugs, two hanging frames (7) are symmetrically arranged on the support base (1), the hanging frame (7) comprises a support frame (71) fixedly arranged on the support base (1), a swing arm (72) hingedly arranged on the top of the support frame (71), and a hanging rod (73) arranged at the end of the swing arm (72) and used for suspending the lug.

7. The internal mast positioning assembly fixture for a fork truck of claim 1, wherein: The inner door frame further comprises a connecting piece and two lugs, the mold further comprises a plurality of positioning rulers (8) and a hanging plate (9) used for hanging the lugs, one side of the positioning ruler (8) abuts against the positioning frame (4), and the other side of the positioning ruler (8) abuts against the hanging plate (9) or the connecting piece.

8. The internal mast positioning assembly fixture of claim 1, wherein: The support base (1) comprises a support plate (11) and two groups of support rollers (12) arranged on the support plate (11), and the support rollers (12) are used for supporting the longitudinal beams.

9. The internal mast positioning assembly fixture of claim 8, wherein: The stopper (3) comprises a swing frame (31) hingedly arranged on the support plate (11), stopper columns (32) are arranged at both ends of the swing frame (31), and ball heads (33) are arranged at the ends of the stopper columns (32), and the support plate (11) is provided with a damping shaft corresponding to the swing frame (31).

10. The internal mast positioning assembly fixture for a fork truck of claim 1, wherein: The elastic actuator (2) is a pneumatic cylinder.

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