Maintenance centering device

Abstract

The utility model provides an overhauling centering device which comprises a V-shaped mounting frame, and the bottom of the V-shaped mounting frame is an inverted-V-shaped groove formed by a first bottom plate and a second bottom plate. A rotating shaft is rotationally arranged on one side of the V-shaped mounting frame, a chain wheel is fixedly arranged on the rotating shaft, a chain is wound on the chain wheel, and the chain is provided with a free end; a chain locking component is arranged on the other side of the V-shaped mounting frame and can fix the free end of the chain; the V-shaped installation frame is further provided with a stop component, and the stop component can limit rotation of the rotating shaft. And the laser detection module is fixedly arranged on the V-shaped mounting frame, and the laser detection module comprises a laser transmitter and a laser receiver. The maintenance centering device can be suitable for installation of various shaft diameters of different sizes, and is high in applicability, simple in structure and easy and convenient to install and operate.

Description

Technical Field

[0001] The utility model relates to the technical field of overhead traveling crane maintenance engineering equipment, in particular to an overhaul centering device. Background Art

[0002] At present, when replacing and overhauling motors, reducers and couplings on an overhead traveling crane, a laser centering method is adopted to achieve centering operation. Therefore, laser centering modules need to be installed on the shafts of the motor and the reducer. Currently, a chain is usually hung at both ends of a mounting bracket, and the mounting bracket is clamped on the shaft through the chain, and then the laser centering module is arranged on the mounting bracket. Such an installation and fixing structure has a single use, cannot adapt to various shaft diameters, and is difficult to adjust. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the utility model is to provide an overhaul centering device for solving the problem of poor applicability of the overhaul centering device in the prior art.

[0004] To achieve the above purpose and other related purposes, the utility model provides an overhaul centering device, including a V-shaped mounting bracket. The bottom of the V-shaped mounting bracket is an inverted V-shaped groove formed by a first bottom plate and a second bottom plate. A rotating shaft is rotatably arranged on one side of the V-shaped mounting bracket. A sprocket is fixedly arranged on the rotating shaft, and a chain is wound around the sprocket. The chain has a free end. A chain locking component is arranged on the other side of the V-shaped mounting bracket, and the chain locking component can fix the free end of the chain. A stopping component is also arranged on the V-shaped mounting bracket, and the stopping component can limit the rotation of the rotating shaft. A laser detection module is fixedly arranged on the V-shaped mounting bracket, and the laser detection module includes a laser emitter and a laser receiver.

[0005] Further, the stopping component is a ratchet mechanism, and the ratchet mechanism includes a ratchet and a pawl. Among them, the ratchet is fixedly arranged on the rotating shaft, the pawl is hinged on the V-shaped mounting bracket, and the pawl cooperates with the ratchet.

[0006] Further, the chain locking component includes positioning teeth.

[0007] Further, mounting columns are arranged on the V-shaped mounting bracket, and mounting holes are arranged on the mounting columns. The laser detection module further includes a fixing plate, and positioning pins are arranged on the fixing plate. The positioning pins cooperate with the mounting holes, and both the laser emitter and the laser receiver are fixedly arranged on the fixing plate.

[0008] Further, one end of the rotating shaft protrudes from the V-shaped mounting bracket, and a hexagonal screwing part is fixedly arranged at the end of the rotating shaft protruding from the V-shaped mounting bracket.

[0009] Further, the hexagonal screwing part is a nut.

[0010] Further, the laser detection module further includes a measuring probe.

[0011] As described above, a maintenance alignment device of the present utility model has the following beneficial effects: When in use, the maintenance alignment device is installed on both the motor shaft and the reducer shaft that need to be aligned. When installing the maintenance alignment device, the shaft (motor shaft or receiver shaft) is clamped in the inverted V-shaped groove at the bottom of the V-shaped mounting bracket, and then the free end of the chain is pulled (at this time, the stop member is in a non-stop state). According to the size of the shaft diameter, the chain is pulled out a certain length so that the free end of the chain can be fixed on the chain locking member on the other side of the V-shaped mounting bracket after passing around the shaft. Then, the rotating shaft is rotated in the direction opposite to the rotating direction of the rotating shaft when pulling the chain to tighten the chain, that is, to make the chain hold the shaft tightly. When it stops tightening, the rotation of the rotating shaft is restricted by the stop member, thereby realizing the installation and fixation of the maintenance alignment device on the shaft. Therefore, compared with the prior art, the maintenance alignment device of the present utility model can adjust the appropriate length of the chain according to the size of the shaft diameter, can be applicable to various shaft diameters of different sizes, has strong applicability, and has a simple structure, simple installation operation, and is also convenient to adjust the looseness of the chain, and further is convenient to adjust the installation position of the maintenance alignment device on the shaft, and thus can improve the installation efficiency and installation accuracy. Description of the Drawings

[0012] Figure 1 It shows a schematic structural diagram of the V-shaped mounting bracket provided by the present utility model.

[0013] Figure 2 It shows a schematic diagram when the maintenance alignment device provided by the present utility model is in use.

[0014] Figure 3 It shows the principle schematic of the laser alignment operation provided by the present utility model Figure 1 .

[0015] Figure 4 It shows the principle schematic of the laser alignment operation provided by the present utility model Figure 2 .

[0016] Description of the Reference Numerals

[0017] 10 V-shaped mounting bracket

[0018] 11 First bottom plate

[0019] 12 Second bottom plate

[0020] 13 Inverted V-shaped groove

[0021] 101 Chain

[0022] 102 Nut

[0023] 103 Positioning Tooth

[0024] 104 Mounting Post

[0025] 20 Laser Detection Module

[0026] 21 Fixed Plate

[0027] 100 Maintenance and Centering Device

[0028] 200 Motor Shaft

[0029] 300 Reducer Shaft Detailed Embodiment

[0030] The following uses specific specific examples to illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0031] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installed", "connected", "connected" 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 connected through an intermediate medium. It can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. in the present invention is based on the orientation or positional relationship shown in the drawings. It is 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 cannot be understood as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0033] Please refer to Figures 1 to 4It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present utility model. Therefore, only the components related to the present utility model are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and proportion of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0034] The present utility model provides a maintenance alignment device. As Figure 1 and Figure 2 shown, the maintenance alignment device 100 includes a V-shaped mounting frame 10 and a laser detection module 20. Among them, the bottom of the V-shaped mounting frame is an inverted V-shaped groove 13 formed by a first bottom plate 11 and a second bottom plate 12. A rotating shaft is rotatably provided on one side of the V-shaped mounting frame 10. A sprocket is fixed on the rotating shaft. A chain 101 is wound around the sprocket, and the chain 101 has a free end. A chain locking member is provided on the other side of the V-shaped mounting frame 10, and the chain locking member can fix the free end of the chain 101; A stop member is further provided on the V-shaped mounting frame 10, and the stop member can limit the rotation of the rotating shaft; The laser detection module 20 is fixedly arranged on the V-shaped mounting frame 10. Specifically, the laser detection module 20 includes a laser emitter and a laser receiver.

[0035] When the maintenance alignment device of the present utility model is in use, as Figure 2 shown, the maintenance alignment device 100 is installed on both the motor shaft 200 and the reducer shaft 300 that need to be aligned. When installing the maintenance alignment device 100, the shaft (motor shaft or receiver shaft) is clamped in the inverted V-shaped groove 13 at the bottom of the V-shaped mounting frame 10, that is, the first bottom plate 11 and the second bottom plate 12 at the bottom of the V-shaped mounting frame 10 are respectively tangent to the left and right sides of the shaft. Then, the free end of the chain 101 is pulled (at this time, the stop member is in a non-stop state). According to the size of the shaft diameter, the chain 101 is pulled out a certain length so that the free end of the chain 101 can be fixed on the chain locking member on the other side of the V-shaped mounting frame 10 after passing around the shaft. Then, the rotating shaft is rotated in the opposite direction to the rotation direction of the rotating shaft when the chain 101 is pulled to tighten the chain 101, that is, to make the chain 101 hold the shaft tightly. When it is tightened and immovable, the rotation of the rotating shaft is restricted by the stop member, thereby realizing the installation and fixation of the maintenance alignment device 100 on the shaft. Compared with the prior art, the maintenance alignment device of the present utility model can adjust the appropriate length of the chain according to the size of the shaft diameter, can be applicable to various shaft diameters of different sizes, has strong applicability, and has a simple structure, simple installation operation, and is also convenient to adjust the looseness of the chain, and further is convenient to adjust the installation position of the maintenance alignment device on the shaft, thereby improving the installation efficiency and installation accuracy.

[0036] Furthermore, in order to facilitate the rotation of the shaft in the opposite direction to tighten the chain 101, preferably, in this embodiment, one end of the shaft protrudes from the V-shaped mounting frame 10, and a hexagonal screwing portion is fixedly provided on the end of the shaft protruding from the V-shaped mounting frame 10. With this structural design, when the shaft is rotated, a hexagonal wrench can be used to cooperate with the hexagonal screwing portion to rotate the shaft with the hexagonal wrench. Specifically, as Figure 1 As shown, in this embodiment, the hexagonal screwing portion is a nut 102 .

[0037] Furthermore, in the present embodiment, the stopper is specifically a ratchet mechanism, which includes a ratchet and a pawl, wherein the ratchet is fixedly arranged on the rotating shaft, the pawl is hinged on the V-shaped mounting frame 10, and the pawl cooperates with the ratchet. When in use, when the chain 101 needs to be pulled, the pawl is manually separated from the ratchet, and the rotating shaft, i.e., the sprocket, can rotate freely relative to the V-shaped mounting frame; when the rotating shaft needs to be rotated in the opposite direction (i.e., the opposite direction of the rotating shaft rotation direction when the chain is pulled) to tighten the chain, the pawl is matched with the ratchet, and as the rotating shaft rotates, the pawl slides over the teeth on the ratchet, and when it cannot rotate, i.e., when the chain is tightly holding the shaft, the pawl cooperates with the teeth on the ratchet to limit the ratchet from rotating in the direction of the rotating shaft rotation when the chain is pulled, thereby realizing the stop and lock of the rotating shaft.

[0038] Further, such as Figure 1 As shown, in this embodiment, the chain locking component includes a positioning tooth 103. When the free end of the chain 101 is pulled to the position of the chain locking component, the free end of the chain 101 can be hung on the positioning tooth 103 to fix the free end of the chain 101. The structure is simple and easy to operate.

[0039] Further, in order to facilitate the fixing of the laser detection module 20 on the V-shaped mounting frame 10, preferably, in this embodiment, as Figure 2 As shown, a mounting column 104 is provided on the V-shaped mounting frame 10, and a mounting hole is provided on the mounting column 104. Correspondingly, the laser detection module 20 also includes a fixing plate 21, and a positioning pin is provided on the fixing plate 21. The positioning pin cooperates with the mounting hole on the mounting column 104, so as to fix the fixing plate 21 relative to the mounting column 104, and the laser transmitter and the laser receiver are both fixedly arranged on the fixing plate 21.

[0040] Furthermore, the laser detection module 20 also includes a measuring probe, through the setting of the measuring probe, it can detect whether the laser transmitter on the maintenance and centering device and the laser receiver on the maintenance and centering device arranged opposite thereto are on the same horizontal line, thereby improving the installation accuracy.

[0041] Furthermore, the operation of the centering operation by the laser centering instrument is as follows:

[0042] Exemplarily, as Figure 3 shown, it is a schematic diagram of a pair of devices to be aligned. Laser emitters and laser receivers are installed on both the A-axis and the B-axis, and are connected to the laser alignment instrument through signal lines. As Figure 3 shown, laser beams are respectively emitted from two laser emitters installed on the A and B axes, and are received by the laser receivers of the other party. When the beam falls on the photoelectric dot matrix CCD acquisition surface of the laser receiver, a very small irradiation area is formed; the laser alignment instrument calculates to determine the energy center point of the irradiation area. As the axis rotates, the energy center points of their respective beams also move on the CCD acquisition surfaces of the laser receivers of the other party. The laser alignment instrument can calculate the axial deviation and angular deviation of the device under test according to the displacement amount. The laser alignment instrument adjusts the alignment device by respectively measuring the components of the actual deviation in two orthogonal planes and respectively correcting the component deviations. Now, simplify the working process of the laser alignment instrument, as Figure 4 shown, A and B are respectively the center lines of the two axes to be measured, S is the distance between the two measuring devices measured, δ is the axial deviation at the connecting end face of the two axes (usually located at the midpoint between the two measuring devices), and α is the angular deviation between the two axes. After the two axes are flipped by 180°, the measuring devices on the axes move from the upper halves of the two axes to the lower halves respectively. At this time, the laser beams are displaced on the CCD acquisition surfaces of the laser receivers of the other party respectively. Let the radial components of the displacement be ΔA and ΔB respectively. It can be known that the relationship between the angular deviation and the radial displacement component is:

[0043] tanα = (ΔA + ΔB) / S (1)

[0044] (1) Assume that the B-axis makes a translation so that the two axes coincide at the midpoint. Then ΔA and ΔB will become ΔA - 2δ and ΔB + 2δcosα respectively. According to the symmetry principle, it can be known that the relationship between the axial deviation and the radial displacement component is:

[0045] ΔA - 2δ = ΔB + 2δcosα (2)

[0046] From the above analysis, it can be seen that the measured value of the laser alignment instrument is only related to the radial component of the displacement of the beam energy center on the CCD acquisition surface of the receiver on the other side. As can be seen from Equation (1), any slight change in the angular deviation can be detected from the change in ΔA + ΔB; Equation (2) indicates that when the angular deviation is very small, cosα = 1, and δ = (ΔA - ΔB) / 4, and the measurement accuracy is quite high. It is worth mentioning that in addition to accurately measuring the shaft deviation and angular deviation, most laser alignment instruments can calculate the leveling values and translation values of each equipment foot by inputting the distance between the leveling point of the equipment foot and the measuring instrument, which greatly facilitates the adjustment of the equipment. It should be noted that the alignment operation using a laser alignment instrument is a commonly used operation method in the current existing technology, and its specific detection steps and principles will not be elaborated here.

[0047] In summary, the overhaul alignment device of the present utility model can adjust the appropriate length of the chain according to the size of the shaft diameter, so that it can be applicable to various shaft diameters of different sizes, with strong applicability, simple structure, convenient installation and operation, and the laser alignment operation using this overhaul alignment device can greatly improve the efficiency of the alignment operation and reduce the labor force. Therefore, the present utility model effectively overcomes various disadvantages in the prior art and has high industrial utilization value.

[0048] The above embodiments are only illustrative of the principles and effects of the present utility model, and are not used to limit the present utility model. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present utility model. Therefore, all equivalent modifications or changes completed by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed by the present utility model should still be covered by the claims of the present utility model.

Claims

1. A maintenance and centering device, characterized in that: include: A V-shaped mounting frame, wherein the bottom of the V-shaped mounting frame is an inverted V-shaped groove formed by a first bottom plate and a second bottom plate; a rotating shaft is rotatably provided on one side of the V-shaped mounting frame, a sprocket is fixedly provided on the rotating shaft, a chain is wound on the sprocket, and the chain has a free end; a chain locking component is provided on the other side of the V-shaped mounting frame, and the chain locking component can fix the free end of the chain; a stop component is also provided on the V-shaped mounting frame, and the stop component can limit the rotation of the rotating shaft; A laser detection module is fixedly arranged on the V-shaped mounting frame, and the laser detection module includes a laser transmitter and a laser receiver.

2. A maintenance and centering device according to claim 1, characterized in that: The stopping component is a ratchet mechanism, which includes a ratchet and a pawl, wherein the ratchet is fixedly arranged on the rotating shaft, the pawl is hinged on the V-shaped mounting frame, and the pawl cooperates with the ratchet.

3. The maintenance and centering device according to claim 1, characterized in that: The chain locking component includes positioning teeth.

4. The maintenance and centering device according to claim 1, characterized in that: The V-shaped mounting frame is provided with a mounting column, and the mounting column is provided with a mounting hole; the laser detection module also includes a fixing plate, and the fixing plate is provided with a positioning pin, and the positioning pin cooperates with the mounting hole, and the laser transmitter and the laser receiver are both fixedly arranged on the fixing plate.

5. The maintenance and centering device according to claim 1, characterized in that: One end of the rotating shaft protrudes from the V-shaped mounting frame, and a hexagonal screwing portion is fixedly provided on the end of the rotating shaft protruding from the V-shaped mounting frame.

6. A maintenance and centering device according to claim 5, characterized in that: The hexagonal screwing portion is a nut.

7. A maintenance and centering device according to any one of claims 1 to 6, characterized in that: The laser detection module also includes a measuring probe.

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