A clamping device for welding a forklift mast

Abstract

The utility model discloses a kind of clamping devices for forklift gantry welding, including base, fixed base and clamping assembly;Fixed base is respectively set close to the both ends of base, fixed base includes bottom plate and fixed block, bottom plate is slidably arranged on base, and fixed block is connected with bottom plate;Clamping assembly includes connecting seat, push block and hydraulic cylinder, connecting seat is respectively set in the both ends of base, and there is spacing between connecting seat and fixed base, hydraulic cylinder is set on connecting seat, and hydraulic cylinder is connected with push block.The utility model controls different opening size according to the different position of different types of gantry, controls the movement of bottom plate, makes the movement of bottom plate drive fixed block to move, and then adjust the spacing between fixed base and connecting seat, so that workpiece can be placed smoothly on base, and start hydraulic cylinder, make hydraulic cylinder drive push block act on workpiece, to realize the clamping of workpiece, carry out reverse deformation control to gantry welding, reduce its welding deformation.

Description

Technical Field

[0001] This utility model relates to the field of forklift mast manufacturing technology, and more specifically, to a clamping device for welding forklift masts. Background Technology

[0002] The forklift mast is the main load-bearing structure of the forklift's lifting device. The forklift mast is a component assembled by welding two longitudinal beams and one crossbeam. Currently, the welding of forklift masts mostly adopts manual positioning and fixing. First, the two longitudinal beams of the mast are fixed to the crossbeam by spot welding, and then the forklift mast is welded and fixed by welding.

[0003] However, due to the high temperature during the welding process, the forklift mast will undergo slight deformation, causing misalignment of the forklift mast part located at the weld point. This will lead to assembly difficulties in the later stages, and the weld point will need to be repaired in order to assemble the forklift mast. This will reduce welding efficiency and increase production costs.

[0004] Therefore, how to provide a clamping device for welding forklift masts has become a technical problem that urgently needs to be solved in this field. Utility Model Content

[0005] One objective of this invention is to provide a new technical solution for a clamping device used in welding forklift masts.

[0006] According to a first aspect of the present invention, a clamping device for welding forklift masts is provided, comprising: a base, a fixing seat, and a clamping assembly;

[0007] The fixing bases are respectively disposed near both ends of the base. Each fixing base includes a base plate and a fixing block. The base plate is slidably disposed on the base, and the fixing block is connected to the base plate.

[0008] The clamping assembly includes a connecting seat, a push block, and a hydraulic cylinder. The connecting seats are respectively disposed at both ends of the base, and there is a gap between the connecting seats and the fixed seat. The hydraulic cylinder is disposed on the connecting seat, and the output shaft of the hydraulic cylinder is connected to the push block.

[0009] Optionally, the clamping assembly further includes a fixing plate, a transmission rod, and a connecting bracket. The fixing plate is disposed on the connecting seat, and the connecting bracket is disposed on the fixing plate. The first end of the transmission rod is connected to the output shaft of the hydraulic cylinder, and the second end of the transmission rod passes through the fixing plate and the connecting bracket and is connected to the push block.

[0010] Optionally, the clamping assembly further includes a sleeve, and the fixing plate and the connecting bracket are respectively provided with a first connecting hole and a second connecting hole. The two ends of the sleeve are respectively connected to the first connecting hole and the second connecting hole, and the transmission rod is located inside the sleeve.

[0011] Optionally, the clamping assembly further includes a protective shell, which is connected to the connecting seat and is sleeved on the hydraulic cylinder.

[0012] Optionally, the clamping device for welding forklift masts further includes a first sensor disposed within the protective housing, the first sensor being used to detect the distance between the workpiece and the bottom of the hydraulic cylinder.

[0013] Optionally, the sidewall of the fixing block is provided with a groove.

[0014] Optionally, the clamping device for welding forklift masts further includes a second sensor disposed on the side wall of the fixing block, the second sensor being used to detect the distance between the workpiece and the fixing block.

[0015] Optionally, a slider is provided on the base plate, and a mounting groove is provided on the base. A lead screw is provided in the mounting groove, and the lead screw passes through the slider.

[0016] Optionally, the clamping device for welding forklift masts further includes a stop bar and an accordion cover. The stop bar is disposed on both sides of the base, and the two ends of the accordion cover are slidably connected to the stop bar. The accordion cover is configured to cover the outside of the mounting groove and the lead screw.

[0017] The beneficial effects of this utility model are as follows:

[0018] This invention features a base plate slidably mounted on a base, with a fixing block connected to the base plate. Connecting seats are positioned at both ends of the base, with a gap between the connecting seats and the fixing seats. A hydraulic cylinder is mounted on the connecting seat, and its output shaft is connected to a push-tightening block. In use, the operator first controls the movement of the base plate according to the opening size of different types of forklift masts. This movement of the base plate moves the fixing block, adjusting the gap between the fixing seat and the connecting seat to ensure the workpiece can be smoothly placed on the base. Next, the hydraulic cylinder is activated, causing the push-tightening block to act on the workpiece, clamping and fixing it. This invention compensates for opening deviations during assembly by positioning the mast opening size. It can also control different opening sizes according to different positions of different types of masts, providing anti-deformation control for mast welding. Hydraulic oil is used to fix the mast in all directions, reducing welding deformation.

[0019] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0021] Figure 1 This is a structural diagram of the clamping device for welding forklift masts according to the present invention;

[0022] Figure 2 This is a structural diagram of the clamping device for welding forklift masts according to this utility model from another angle.

[0023] The following are marked in the diagram: 1. Base; 2. Fixing seat; 21. Base plate; 22. Fixing block; 23. Groove; 3. Clamping assembly; 31. Connecting seat; 32. Pushing block; 33. Hydraulic cylinder; 34. Fixing plate; 35. Connecting bracket; 36. Sleeve; 37. Protective shell; 4. First sensor; 5. Second sensor; 6. Stop bar; 7. Bellows cover. Detailed Implementation

[0024] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0025] The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the invention or its application or use.

[0026] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0027] In all the examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0028] like Figure 1 and Figure 2 As shown, this utility model embodiment provides a clamping device for welding forklift masts, including: a base 1, a fixing seat 2, and a clamping assembly 3.

[0029] The fixing bases 2 are respectively located near the two ends of the base 1. The fixing base 2 includes a base plate 21 and a fixing block 22. The base plate 21 is slidably mounted on the base 1, and the fixing block 22 is connected to the base plate 21.

[0030] The clamping assembly 3 includes a connecting seat 31, a push block 32, and a hydraulic cylinder 33. The connecting seat 31 is respectively disposed at both ends of the base 1, and there is a gap between the connecting seat 31 and the fixed seat 2. The hydraulic cylinder 33 is disposed on the connecting seat 31, and the output shaft of the hydraulic cylinder 33 is connected to the push block 32.

[0031] In use, the operator first controls the base plate 21 to move according to the opening size of different types of forklift masts, so that the base plate 21 moves and drives the fixing block 22 to move, thereby adjusting the distance between the fixing seat 2 and the connecting seat 31 so that the workpiece can be smoothly placed on the base 1; then, the hydraulic cylinder 33 is started, so that the hydraulic cylinder 33 drives the pushing block 32 to act on the workpiece to achieve clamping and fixing of the workpiece.

[0032] It should be noted that since the dimensions of different types of forklift masts and the required opening dimensions are different, different servo opening dimensions can be designed at different positions according to the different mast structures and welding deformations. The hydraulic cylinder 33 drives the push block 32 to act on the workpiece to control the mast's anti-deformation. Alternatively, a fixed positioning opening dimension can be set to compensate for assembly errors without being affected by assembly size errors.

[0033] This invention features a base plate 21 slidably mounted on a base 1, with a fixing block 22 connected to the base plate 21. Connecting seats 31 are respectively positioned at both ends of the base 1, with a gap between the connecting seats 31 and the fixing seat 2. A hydraulic cylinder 33 is mounted on the connecting seat 31, and its output shaft is connected to the push-tightening block 32. In use, the operator first controls the movement of the base plate 21 according to the opening size of different types of forklift masts. This movement of the base plate 21 moves the fixing block 22, thereby adjusting the gap between the fixing seat 2 and the connecting seat 31 to allow the workpiece to be smoothly placed on the base 1. Then, the hydraulic cylinder 33 is activated, causing the push-tightening block 32 to act on the workpiece, thus clamping and fixing it. This invention compensates for opening deviations during assembly by positioning the mast opening size. It can also control different opening sizes according to different positions of different types of masts, controlling deformation during mast welding. Hydraulic oil is used to fix the mast in all directions, reducing welding deformation.

[0034] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, the clamping assembly 3 also includes a fixed plate 34, a transmission rod, and a connecting bracket 35. The fixed plate 34 is mounted on the connecting seat 31, and the connecting bracket 35 is mounted on the fixed plate 34. The first end of the transmission rod is connected to the output shaft of the hydraulic cylinder 33, and the second end of the transmission rod passes through the fixed plate 34 and the connecting bracket 35 and is connected to the push block 32.

[0035] This utility model sets the connecting bracket 35 on the fixed plate 34, connects the first end of the transmission rod to the output shaft of the hydraulic cylinder 33, and makes the second end of the transmission rod pass through the fixed plate 34 and the connecting bracket 35 and connect to the push block 32. The hydraulic cylinder 33 drives the transmission rod to move, which in turn drives the push block 32 to move, so that the push block 32 can act quickly on the forklift mast, thus improving work efficiency.

[0036] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, the clamping assembly 3 also includes a sleeve 36, a fixing plate 34 and a connecting bracket 35 respectively provided with a first connecting hole and a second connecting hole, the two ends of the sleeve 36 are respectively connected to the first connecting hole and the second connecting hole, and the transmission rod is located inside the sleeve 36.

[0037] This invention provides a first connecting hole and a second connecting hole on the fixed plate 34 and the connecting bracket 35 respectively, and makes the two ends of the sleeve 36 connected to the first connecting hole and the second connecting hole respectively. The transmission rod is located inside the sleeve 36, and the sleeve 36 provides protection for the transmission rod, effectively improving the service life and safety of the clamping device for welding forklift masts.

[0038] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, the clamping assembly 3 also includes a protective shell 37, which is connected to the connecting seat 31 and is sleeved on the hydraulic cylinder 33. This arrangement can prevent dust and debris from entering the hydraulic cylinder 33 and causing damage to the hydraulic cylinder 33.

[0039] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, the clamping device for welding forklift masts also includes a first sensor 4, which is disposed inside the protective housing 37. The first sensor 4 is used to detect the distance between the workpiece and the bottom of the hydraulic cylinder 33.

[0040] Furthermore, the clamping device for welding forklift masts also includes a second sensor 5, which is disposed on the side wall of the fixing block 22 and is used to detect the distance between the workpiece and the fixing block 22.

[0041] Specifically, it also includes a controller, which is electrically connected to the first sensor 4, the second sensor 5, and the hydraulic cylinder 33, respectively.

[0042] When the first sensor 4 detects that the distance between the workpiece and the bottom of the hydraulic cylinder 33 is less than the first safety distance, or when the second sensor 5 detects that the distance between the workpiece and the fixed block 22 is less than the second safety distance, a signal is sent to the controller. The controller controls the hydraulic cylinder 33 to stop working, thereby providing protection for the workpiece and preventing it from being subjected to excessive force or moving, which would result in the workpiece being unable to be fixed or resist deformation.

[0043] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, a groove 23 is provided on the side wall of the fixing block 22, which allows the parts in the workpiece to be placed in the groove 23.

[0044] In one embodiment of the clamping device for welding forklift masts of this utility model, a slider is provided on the base plate 21, and an installation groove is provided on the base 1. A lead screw is provided in the installation groove and passes through the slider.

[0045] Specifically, when it is necessary to change the position of the fixed seat 2, the operator can rotate the screw, which allows the base plate 21 to slide in the mounting groove, thereby driving the fixed block 22 to move toward the connecting seat 31 or away from the connecting seat 31, thereby adjusting the distance between the fixed seat 2 and the connecting seat 31, and thus adjusting the opening size of different forklift masts.

[0046] In one embodiment of the clamping device for welding forklift masts according to this utility model, such as Figure 1 and Figure 2 As shown, the clamping device for welding forklift masts also includes a stop bar 6 and a bellows cover 7. The stop bar 6 is disposed on both sides of the base 1, and the two ends of the bellows cover 7 are slidably connected to the stop bar 6. The bellows cover 7 is configured to cover the outside of the mounting groove and the lead screw.

[0047] This utility model sets the baffle 6 on both sides of the base 1, and slides the two ends of the accordion cover 7 to the baffle 6. The accordion cover 7 is set to cover the outside of the mounting groove and the lead screw. The accordion cover 7 can prevent hard particulate foreign objects such as dust, chips, and hard sand from entering the lead screw and the mounting groove, thereby reducing the damage of these foreign objects to the surface of the lead screw.

[0048] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A clamping device for welding forklift masts, characterized in that, include: Base, mounting base, and clamping assembly; The fixing bases are respectively disposed near both ends of the base. Each fixing base includes a base plate and a fixing block. The base plate is slidably disposed on the base, and the fixing block is connected to the base plate. The clamping assembly includes a connecting seat, a push block, and a hydraulic cylinder. The connecting seats are respectively disposed at both ends of the base, and there is a gap between the connecting seats and the fixed seat. The hydraulic cylinder is disposed on the connecting seat, and the output shaft of the hydraulic cylinder is connected to the push block.

2. The clamping device for welding forklift masts according to claim 1, characterized in that, The clamping assembly further includes a fixed plate, a transmission rod, and a connecting bracket. The fixed plate is disposed on the connecting seat, and the connecting bracket is disposed on the fixed plate. The first end of the transmission rod is connected to the output shaft of the hydraulic cylinder, and the second end of the transmission rod passes through the fixed plate and the connecting bracket and is connected to the push block.

3. The clamping device for welding forklift masts according to claim 2, characterized in that, The clamping assembly further includes a sleeve, and the fixing plate and the connecting bracket are respectively provided with a first connecting hole and a second connecting hole. The two ends of the sleeve are respectively connected to the first connecting hole and the second connecting hole, and the transmission rod is located inside the sleeve.

4. The clamping device for welding forklift masts according to claim 1, characterized in that, The clamping assembly also includes a protective shell, which is connected to the connecting seat and is sleeved on the hydraulic cylinder.

5. The clamping device for welding forklift masts according to claim 4, characterized in that, The clamping device for welding forklift masts also includes a first sensor, which is disposed inside the protective housing and is used to detect the distance between the workpiece and the bottom of the hydraulic cylinder.

6. The clamping device for welding forklift masts according to claim 1, characterized in that, The side wall of the fixing block is provided with a groove.

7. The clamping device for welding forklift masts according to claim 1, characterized in that, The clamping device for welding forklift masts also includes a second sensor, which is disposed on the side wall of the fixing block and is used to detect the distance between the workpiece and the fixing block.

8. The clamping device for welding forklift masts according to claim 1, characterized in that, A slider is provided on the base plate, and a mounting groove is provided on the base. A lead screw is provided in the mounting groove and passes through the slider.

9. The clamping device for welding forklift masts according to claim 8, characterized in that, The clamping device for welding forklift masts also includes a stop bar and a bellows cover. The stop bar is disposed on both sides of the base, and the two ends of the bellows cover are slidably connected to the stop bar. The bellows cover is configured to cover the outside of the mounting groove and the lead screw.

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