Fork truck portal H shaped steel gyro wheel locating surface width measurement measuring tool
Technical Field
The utility model relates to the technical field of steel detection, in particular to a width measuring tool for a positioning surface of an H-shaped steel roller of a forklift portal.
Background
The forklift is an efficient, multifunctional and safe industrial carrying vehicle, is specially designed for modern logistics and warehouse management, has a powerful power system and accurate operation control, and is focused on energy conservation, emission reduction and operation convenience. The forklift lifting portal is an important component of a forklift and is mainly used for supporting and lifting cargoes, and lifting of the cargoes is achieved through a hydraulic system so as to meet carrying requirements of different heights. Meanwhile, the forklift has the function of balancing the forklift, and ensures the stability of the forklift in the running and carrying processes.
H-section steel is generally used in a fork truck middle door frame and an inner door frame, and comprises two wing plates which are oppositely arranged and a web plate for connecting the middle positions of the wing plates, wherein each wing plate is divided into two half wing plates with the same length.
When the forklift is assembled, the adjacent forklift portal H-shaped steel is connected with each other through the rollers arranged in the inner groove, in the theoretical design, after the rollers are arranged in the H-shaped steel inner groove, two contact points of the rollers and the side wall of the steel inner groove form a theoretical contact surface, the theoretical contact surface is defined as a roller positioning surface, the distance between the roller positioning surface and the horizontal section of the steel web plate is s, the theoretical width of the roller positioning surface is equal to the diameter of the rollers, and when the diameter of the selected rollers is equal to the width d of the positioning surface, the portal can obtain the optimal design effect after the assembly.
In actual production, because the dimensional tolerance range of H-shaped steel produced by hot rolling is wider, forklift manufacturers often design a plurality of roller diameters within the tolerance allowable range of d, and the rollers with proper diameters are selected for assembly according to the actual roller positioning surface width of the section steel. In order to achieve good assembly effect, for a section steel production enterprise, the width of the section steel is required to be close to a theoretical design value in production, and inaccurate dimension measurement can lead to misjudgment of a qualified product as a non-qualified product or misjudgment of the non-qualified product as a qualified product, misleading and economic loss are caused to production regulation and control, and for a forklift production enterprise, accurate measurement of the width is helpful for selecting a roller with a proper diameter, inaccurate measurement can lead to incorrect roller selection, assembly difficulty is caused, and production efficiency is affected.
At present, manufacturers mainly rely on vernier calipers or upper and lower limit templates to measure the width of the roller locating surface of the H-shaped steel inner groove of the forklift portal, and the forklift manufacturers use rollers and a feeler gauge to carry out inspection and roller selection. However, the method has certain defects that the roller locating surface in the H-shaped steel inner groove is positioned at a position 5-20mm away from the web plate, and the common vernier caliper is difficult to accurately locate the measuring point of the roller locating surface. Meanwhile, an included angle of 91-92 degrees is formed between the inner wall of the portal H-shaped steel wing plate and the web plate, an arc with different radiuses is generally formed at the joint of the inner side of the wing plate and the web plate to serve as transition, the method of directly measuring the width of the roller positioning surface is difficult to work by an indirect method of measuring the bottom of the wing plate groove or the opening position of the wing plate, the upper and lower limit templates can only qualitatively judge whether the size of the profile steel is qualified or not, no quantitative guiding effect is provided for roller selection, and the method of preparing a plurality of rollers for repeated testing by matching the rollers is required, so that the time consumption is long. Therefore, in actual measurement, the dimension measurement is difficult to position, the time consumption is long, measurement errors are easy to occur, and the accuracy of measurement and the production efficiency of both supply and demand parties are affected.
In summary, how to realize rapid and accurate measurement of the width of the positioning surface of the inner gear roller of the portal H-shaped steel, so as to reduce the measurement time and the measurement error, and further improve the measurement accuracy, the qualification rate of the section steel production and the production efficiency of the portal H-shaped steel, is a technical problem to be solved by those skilled in the art.
Disclosure of utility model
The utility model aims to overcome the defects in the prior art, and provides a width measuring tool for the H-shaped steel roller locating surface of a forklift portal frame, which can accurately measure the width of the H-shaped steel inner groove roller locating surface by arranging a height-adjustable supporting base.
In order to achieve the technical effects, the utility model adopts the following technical scheme:
The utility model provides a fork truck portal H shaped steel gyro wheel locating surface width measurement tool, includes slide caliper and locating support frame, slide caliper includes blade, internal diameter fixed jaw and internal diameter movable jaw, locating support frame slides and sets up on the blade, locating support frame, internal diameter fixed jaw and internal diameter movable jaw's bottom surface flushes, just locating support frame sets up between internal diameter fixed jaw and internal diameter movable jaw, locating support frame bottom is equipped with high adjustable support base, high adjustable support base's bottom surface with locating support frame's bottom surface and blade's bottom surface are parallel.
According to the measuring tool provided by the utility model, the supporting frame with the height-adjustable supporting base is arranged between the inner diameter fixed jaw and the inner diameter movable jaw, when the measuring tool is specifically used, the height of the height-adjustable supporting base can be adjusted to be the same as the distance between the web plate and the roller positioning surface in the H-shaped steel inner groove in advance, meanwhile, the bottom surfaces of the height-adjustable supporting base, the positioning supporting frame and the ruler body are mutually parallel, when the bottom surface of the height-adjustable supporting base is arranged on the web plate, the inner diameter fixed jaw and the inner diameter movable jaw can be ensured to respectively correspond to the two ends of the roller positioning surface, and the accurate size of the roller positioning surface is measured.
Preferably, the height-adjustable support base comprises a screw rod, a screw rod sleeve and a bottom plate, wherein the top end of the screw rod is detachably arranged on the bottom surface of the positioning support frame, an internal thread is arranged in the screw rod sleeve, the screw rod sleeve is in threaded connection with the screw rod, and the bottom end of the screw rod sleeve is fixed on the top surface of the bottom plate.
Preferably, the ruler body is provided with a size scale, and the zero point of the size scale is flush with the left side of the inner diameter fixing claw.
Preferably, the inner diameter movable claw is arranged on the ruler body in a sliding way through a reading sliding block fixedly connected with the top end of the inner diameter movable claw, a vernier scale is arranged on the reading sliding block, and the zero point of the vernier scale is flush with the right side of the inner diameter movable claw.
Further preferably, the left side surface of the inner diameter fixed jaw is vertical to the ruler body, and the right side surface of the inner diameter movable jaw is vertical to the ruler body.
Preferably, the positioning support frame is arranged on the ruler body in a sliding way through a support frame sliding block fixedly connected with the top end of the positioning support frame.
Further preferably, a support frame limiting screw is arranged on the support frame sliding block, and an inner diameter movable claw limiting screw is arranged on the reading sliding block.
Compared with the prior art, the utility model has the beneficial effects that:
1. According to the measuring tool provided by the utility model, the supporting frame with the height-adjustable supporting base is arranged between the inner diameter fixed jaw and the inner diameter movable jaw, when the measuring tool is specifically used, the height of the height-adjustable supporting base can be adjusted to be the same as the distance between the web plate and the roller positioning surface in the H-shaped steel inner groove in advance, meanwhile, the bottom surfaces of the height-adjustable supporting base, the positioning supporting frame and the ruler body are mutually parallel, when the bottom surface of the height-adjustable supporting base is arranged on the web plate, the inner diameter fixed jaw and the inner diameter movable jaw can be ensured to respectively correspond to the two ends of the roller positioning surface, and the accurate size of the roller positioning surface is measured.
2. Through setting up support frame spacing screw and internal diameter movable claw spacing screw, make the measuring tool can the width of the gyro wheel locating surface in the same batch of H shaped steel inside groove of rapid survey, effectively improve operating efficiency.
Drawings
Fig. 1 is a schematic structural diagram of a width measuring tool for a positioning surface of an H-shaped steel roller of a forklift gantry provided in embodiment 1;
FIG. 2 is a schematic structural view of a forklift mast H-section;
Fig. 3 is a use state diagram of the forklift gantry H-shaped steel roller locating surface width measuring tool provided in embodiment 1;
The automatic measuring device comprises a ruler body, a supporting frame sliding block, a supporting frame limiting screw, a reading sliding block, an inner diameter movable claw limiting screw, an inner diameter fixed claw, a positioning supporting frame, an inner diameter movable claw, a height-adjustable supporting base, a forklift mast H-shaped steel, a wing plate, a web plate and a roller positioning surface.
Detailed Description
The utility model will be further described with reference to the drawings and examples.
Example 1
The utility model provides a fork truck portal H shaped steel gyro wheel locating surface width measurement tool, is shown as fig. 1, includes slide caliper and location support frame 7, slide caliper includes blade 1, internal diameter fixed jaw 6 and internal diameter movable jaw 8, location support frame 7 slides and sets up on blade 1, the bottom surface of location support frame 7, internal diameter fixed jaw 6 and internal diameter movable jaw 8 flushes, and the internal diameter fixed jaw 6 bottom surface is the same with length H1 of blade 1 promptly, and location support frame 7 bottom surface is the same with length H2 and internal diameter movable jaw 8 and length H3 of blade 1 with the length H2 of blade 1. And the positioning support frame 7 is arranged between the inner diameter fixed claw 6 and the inner diameter movable claw 8, the bottom of the positioning support frame 7 is provided with a height-adjustable support base 9, and the bottom surface of the height-adjustable support base 9 is parallel to the bottom surface of the positioning support frame 7 and the bottom surface of the ruler body 1. The ruler body 1 is provided with a size scale, and the zero point of the size scale is flush with the left side of the inner diameter fixing claw 6. The inner diameter movable claw 8 is arranged on the ruler body in a sliding way through a reading sliding block 4 fixedly connected with the top end of the inner diameter movable claw, a vernier scale is arranged on the reading sliding block 4, and the zero point of the vernier scale is flush with the right side of the inner diameter movable claw 8. The left side surface of the inner diameter fixed claw 6 is vertical to the ruler body 1, and the right side surface of the inner diameter movable claw 8 is vertical to the ruler body 1. The positioning support frame 7 is arranged on the ruler body 1 in a sliding way through a support frame sliding block 2 fixedly connected with the top end of the positioning support frame. The support frame slider 2 is provided with a support frame limit screw 3, and the reading slider 4 is provided with an inner diameter movable claw limit screw 5.
In this embodiment, the height-adjustable support base 9 (specific structure is not shown in the drawings) includes a screw, a screw sleeve and a bottom plate, the top end of the screw is detachably disposed on the bottom surface of the positioning support frame 7, an internal thread is disposed inside the screw sleeve, the screw sleeve is in threaded connection with the screw, and the bottom end of the screw sleeve is fixed on the top surface of the bottom plate.
When the forklift portal H-shaped steel 10 is particularly used, as shown in fig. 2, the forklift portal H-shaped steel 10 comprises two side vertical wing plates 11 and a middle transverse web plate 12, arc transition exists between the web plate 12 and the wing plates 11, and a roller positioning surface is arranged at a position s away from the web plate 12, and the width of the roller positioning surface is d. As shown in fig. 3, the forklift mast H-shaped steel 10 is first placed horizontally to make the wing plate 11 in a vertical state, and after the spacing s between the roller positioning surface 13 and the web plate 12 is determined according to a forklift manufacturer design drawing, the height H4 of the height-adjustable support base 9 is adjusted to make H4 equal to s. The support frame sliding block 2 is transversely adjusted, the support frame sliding block 2 drives the positioning support frame 7 and the height-adjustable support base 9 to be located at the horizontal position of the web plate 12, after the support frame limiting screw 3 is screwed down, the bottom surface of the height-adjustable support base 9 is placed on the top surface of the web plate 12, the left end of the bottom surface of the inner diameter fixing claw 6 is in contact with the left inner wall of the wing plate 11, the reading sliding block 4 is transversely adjusted, the right end of the bottom surface of the inner diameter movable claw 8 is in contact with the right inner wall of the wing plate 11, after the inner diameter movable claw limiting screw 5 is screwed down, reading can be performed, and the reading is the width of the H-shaped steel roller positioning surface 13 of the forklift portal.