Measuring device for crawler hanger shaft

Abstract

The utility model discloses a measuring device for a crawler hanger shaft, which belongs to the technical field of shaft measurement and comprises a workbench, a positioning plate, a fixing rod and a measuring scale, a sliding groove is arranged on the right half portion of the workbench, a through groove is arranged at the top of the sliding groove, a first through hole is arranged at the right end of the sliding groove, a mounting plate is arranged in the sliding groove, and a threaded rod is arranged on the mounting plate. An extension rod is arranged at the top of the mounting plate, a positioning block is arranged at the rear end of the extension rod, a measuring rod is arranged in the middle of the positioning block, a fixing plate is arranged at the left end of the measuring rod, a measuring needle is arranged at the rear end of the fixing plate, a second through hole is formed in the middle of the positioning block, and a limiting groove is formed in the surface of the inner wall of the second through hole. The spring pushes the limiting plate to drive the measuring rod to move, the shaft is quickly and simply fixed by the measuring rod, the diameter and the length of the shaft are measured, the spring is in a compressed state, the size of the shaft is accurately measured, and deviation is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft measurement, in particular to a measuring device for a crawler crane shaft. Background Art

[0002] After the production and processing of the shaft is completed, the size of the shaft is measured and inspected to confirm whether the shaft processing is qualified. The shaft used for oil and gas crawler cranes is used in large mechanical equipment such as crawler cranes, so the size requirements of the shaft will be more stringent. For example, a shaft clamping device for measuring shaft diameter disclosed in Chinese patent literature (patent number: CN201921176319.4) is arranged in the mounting tube to drive the fixed block to move toward the center of the mounting tube to fix the shaft. The fixed block itself is made of non-slip rubber pads. The rubber itself is elastic and easy to deform. In addition, the above-mentioned device fixes the shaft, and it is also necessary for the staff to hold the measuring tool for measurement. If the shaft is touched during the measurement, the shaft may shake slightly, or the inspector holds the detection device in mid-air for measurement, and the handheld measuring tool is suspended in the air, the stability of the handheld detection tool of the inspector is required to be high. Slight shaking during the measurement of the inspector may cause deviations in the detection value of the shaft.

[0003] For this purpose, we propose a measuring device for crawler crane axles. Utility Model Content

[0004] The purpose of the utility model is to provide a measuring device for a crawler crane shaft to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a measuring device for a crawler crane shaft, comprising a workbench, a positioning plate, a fixing rod, and a measuring ruler, a slide groove is provided on the right half of the workbench, a through groove is provided on the top of the slide groove, a first through hole is provided on the right end of the slide groove, a mounting plate is provided in the slide groove, a threaded rod is provided on the mounting plate, an extension rod is provided on the top of the mounting plate, a positioning block is provided at the rear end of the extension rod, a measuring rod is provided in the middle of the positioning block, a fixing plate is provided at the left end of the measuring rod, a measuring needle is provided at the rear end of the fixing plate, a second through hole is provided in the middle of the positioning block, a limiting groove is provided on the inner wall surface of the second through hole, a limiting plate is provided in the limiting groove, and a spring is provided on the right side of the limiting plate.

[0006] Preferably, both ends of the inner wall of the second through hole are provided with a first mounting groove, and a first ball is arranged in the first mounting groove.

[0007] Preferably, guide grooves are provided on both side surfaces of the mounting plate, second mounting grooves are provided on both side inner walls of the through groove, and second balls are provided in the second mounting grooves.

[0008] Preferably, a threaded hole matching the threaded rod is provided at the lower part of the mounting plate, the left end of the threaded rod is connected to the inner wall of the slide groove by a bearing, the right end of the threaded rod passes through the first through hole, and no thread is provided on the contact surface with the first through hole.

[0009] Preferably, the left side surface of the measuring needle and the left side surface of the fixing plate are on the same vertical line.

[0010] Preferably, the measuring ruler is installed between the positioning plate and the fixing rod, and the "0" scale on the measuring ruler is on the same vertical line as the right side surface of the positioning plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the shaft is placed on the left side of the positioning block so that the left end of the shaft is completely in contact with the positioning plate, the measuring rod is released, the spring pushes the limit plate to drive the measuring rod to move, and the measuring rod quickly and simply fixes the shaft. At the same time, the value indicated by the measuring needle on the measuring ruler is the length of the shaft. The diameter of the shaft is measured, the shaft is placed vertically, the threaded rod is rotated to move the mounting plate, the position of the measuring needle is adjusted, and the position of the measuring needle is adjusted so that the distance between the left side of the measuring needle and the positioning plate is slightly smaller than the diameter of the shaft. The measuring rod is pulled, and the shaft is placed between the measuring needle and the positioning plate so that the left side of the shaft is in contact with the positioning plate. The measuring rod is released, and the diameter of the shaft is measured. When measuring the diameter and length of the shaft, the spring is compressed, so that the size of the shaft is measured accurately without deviation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 This is a schematic diagram of the positioning block structure of the utility model;

[0015] Figure 4 This is an enlarged view of point A of the utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the mounting plate of the utility model;

[0017] Figure 6 It is an enlarged view of point B of the present utility model.

[0018] In the figure: 1. workbench; 2. positioning plate; 3. fixing rod; 4. measuring ruler; 5. slide groove; 6. through groove; 7. first through hole; 8. mounting plate; 81. guide groove; 82. second mounting groove; 83. second ball; 9. threaded rod; 91. threaded hole; 10. extension rod; 11. measuring rod; 12. positioning block; 121. second through hole; 122. limit groove; 123. limit plate; 124. spring; 125. first mounting groove; 126. first ball; 13. fixing plate; 14. measuring needle. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-6The utility model provides a technical solution: a measuring device for crawler crane shaft, including a workbench 1, a positioning plate 2, a fixing rod 3, and a measuring ruler 4. A slide groove 5 is arranged on the right half of the workbench 1, a through groove 6 is arranged on the top of the slide groove 5, a first through hole 7 is arranged on the right end of the slide groove 5, a mounting plate 8 is arranged in the slide groove 5, a threaded rod 9 is arranged on the mounting plate 8, an extension rod 10 is arranged on the top of the mounting plate 8, a positioning block 12 is arranged at the rear end of the extension rod 10, a measuring rod 11 is arranged in the middle of the positioning block 12, and a left end of the measuring rod 11 is provided. A fixing plate 13 is provided, a measuring needle 14 is provided at the rear end of the fixing plate 13, a second through hole 121 is provided in the middle of the positioning block 12, a limiting groove 122 is provided on the inner wall surface of the second through hole 121, a limiting plate 123 is provided in the limiting groove 122, a spring 124 is provided on the right side of the limiting plate 123, and the crawler crane shaft (hereinafter referred to as: shaft) is measured. First, the length of the shaft is measured, and the threaded rod 9 is rotated. The mounting plate 8 is provided with a threaded hole 91 that matches the threaded rod. The threaded rod 9 is rotated to move the mounting plate 8. The positioning block 12 set on the movable mounting plate 8 is moved, and the shaft is placed flat on the workbench 1, so that the right end of the shaft exceeds the measuring needle set on the left end of the measuring rod 11. At this time, the measuring rod 11 is pulled, and the shaft is placed on the left side of the positioning block 13, so that the left end of the shaft is completely in contact with the positioning plate 2, and the measuring rod 11 is released. The spring 124 pushes the limit plate 123 to drive the measuring rod 11 to move, and the measuring rod 11 quickly and easily fixes the shaft. At the same time, the value of the measuring needle 14 on the measuring ruler 4 is the length of the shaft, and the diameter of the shaft is measured. , place the shaft vertically, rotate the threaded rod 9 to move the mounting plate 8, adjust the position of the measuring needle 14, adjust the position of the measuring needle 11 so that the distance between the left side of the measuring needle 11 and the positioning plate 2 is slightly smaller than the diameter of the shaft, pull the measuring rod 11, place the shaft between the measuring needle 14 and the positioning plate 12, make the left side of the shaft contact with the positioning plate 2, loosen the measuring rod 11, measure the diameter of the shaft, and measure the diameter and length of the shaft, so that the spring 124 is in a compressed state, so that the size of the shaft can be measured accurately without deviation.

[0021] Wherein, first mounting grooves 125 are provided at both ends of the inner wall of the second through hole 12, a first ball 126 is provided in the first mounting groove 125, guide grooves 81 are provided on both side surfaces of the mounting plate 8, second mounting grooves 82 are provided on both side inner walls of the through groove 6, a second ball 83 is provided in the second mounting groove 82, so that there is no gap between the measuring rod 11 and the positioning block 12 and between the mounting plate 8 and the workbench 1, so that the measured value of the shaft is the real size of the shaft without deviation, and the movement of the measuring rod 11 and the mounting plate 8, the rolling of the first ball 126 and the second ball 83 greatly reduce the friction between the measuring rod 11 and the positioning block 12 and between the mounting plate 8 and the workbench 1;

[0022] A threaded hole 91 matching with the threaded rod 9 is provided at the lower part of the mounting plate 8. The left end of the threaded rod 9 is connected to the inner wall of the slide groove 5 through a bearing. The right end of the threaded rod 9 passes through the first through hole 7, and no thread is provided on the contact surface with the first through hole 7. The rotation of the threaded rod 9 matches with the threaded hole 91, so that the mounting plate 8 moves, and the position of the measuring needle 14 is adjusted, so that the measuring device can measure shafts of different diameters and lengths.

[0023] The left side surface of the measuring needle 14 is on the same vertical line as the left side surface of the fixing plate 13. The measuring ruler 4 is installed between the positioning plate 2 and the fixing rod 3. The "0" scale on the measuring ruler 4 is on the same vertical line as the right side surface of the positioning plate 2. The size of the shaft is measured to ensure accurate measurement of the size of the shaft.

[0024] Working principle: to measure the length of the shaft, rotate the threaded rod 9, and the mounting plate 8 is provided with a threaded hole 91 that matches the threaded rod. The threaded rod 9 rotates to move the mounting plate 8, driving the positioning block 12 set on the mounting plate 8 to move. The shaft is placed flat on the workbench 1, so that the right end of the shaft exceeds the measuring needle set on the left end of the measuring rod 11. At this time, pull the measuring rod 11 and place the shaft on the left side of the positioning block 13, so that the left end of the shaft is completely in contact with the positioning plate 2, loosen the measuring rod 11, and the spring 124 pushes the limit plate 123 to drive the measuring rod 11 to move. The measuring rod 11 quickly and easily fixes the shaft. At the same time, the measuring The value indicated by the measuring needle 14 on the measuring ruler 4 is the length of the shaft. To measure the diameter of the shaft, place the shaft vertically, rotate the threaded rod 9 to move the mounting plate 8, adjust the position of the measuring needle 14, adjust the position of the measuring needle 11 so that the distance between the left side of the measuring needle 11 and the positioning plate 2 is slightly smaller than the diameter of the shaft, pull the measuring rod 11, place the shaft between the measuring needle 14 and the positioning plate 12, make the left side of the shaft contact with the positioning plate 2, loosen the measuring rod 11, measure the diameter of the shaft, and measure the diameter and length of the shaft. Put the spring 124 in a compressed state to accurately measure the size of the shaft without deviation.

[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A measuring device for a crawler crane shaft, comprising a workbench (1), a positioning plate (2), a fixing rod (3), and a measuring ruler (4), characterized in that: The workbench (1) is provided with a slide groove (5) at the right half thereof, a through groove (6) at the top of the slide groove (5), a first through hole (7) at the right end of the slide groove (5), a mounting plate (8) at the inside of the slide groove (5), a threaded rod (9) at the mounting plate (8), an extension rod (10) at the top of the mounting plate (8), a positioning block (12) at the rear end of the extension rod (10), a measuring rod (11) at the middle of the positioning block (12), a fixing plate (13) at the left end of the measuring rod (11), a measuring needle (14) at the rear end of the fixing plate (13), a second through hole (121) at the middle of the positioning block (12), a limiting groove (122) at the inner wall surface of the second through hole (121), a limiting plate (123) at the inside of the limiting groove (122), and a spring (124) at the right side of the limiting plate (123).

2. A measuring device for crawler crane shaft according to claim 1, characterized in that: Both ends of the inner wall of the second through hole (121) are provided with first mounting grooves (125), and a first rolling ball (126) is provided in the first mounting groove (125).

3. The measuring device for crawler crane shaft according to claim 1, characterized in that: Guide grooves (81) are provided on both side surfaces of the mounting plate (8), second mounting grooves (82) are provided on both side inner walls of the through groove (6), and second balls (83) are provided in the second mounting grooves (82).

4. A measuring device for a crawler crane shaft according to claim 1, characterized in that: A threaded hole (91) matching with the threaded rod (9) is provided at the lower part of the mounting plate (8); the left end of the threaded rod (9) is connected to the inner wall of the slide groove (5) via a bearing; the right end of the threaded rod (9) passes through the first through hole (7), and the contact surface with the first through hole (7) is not provided with threads.

5. The measuring device for crawler crane shaft according to claim 1, characterized in that: The left side surface of the measuring needle (14) and the left side surface of the fixing plate (13) are located on the same vertical line.

6. The measuring device for crawler crane shaft according to claim 1, characterized in that: The measuring ruler (4) is installed between the positioning plate (2) and the fixing rod (3), and the "0" scale on the measuring ruler (4) is on the same vertical line as the right side surface of the positioning plate (2).

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