A locking mechanism and a locking method

Abstract

The present invention belongs to the technical field of rapid maintenance, and discloses a locking mechanism and a locking method. The locking mechanism is used to lock a second component sleeved outside a first component onto the first component, and comprises: a first through hole, radially arranged on the second component; a jacket, sleeved outside the second component, the jacket is provided with a second through hole corresponding to and connected to the first through hole, the second through hole is provided with an internal thread; a stud, the stud is provided with an external thread, and cooperates with the internal thread so that the end of the stud passes through the first through hole and abuts against the first component. The locking mechanism and the locking method provided by the present invention can ensure that the first component and the second component can remain relatively fixed during operation, and when the locking structure fails, the first component and the second component do not need to be disassembled, and the equipment failure caused by the failure of the locking structure can be eliminated by simply replacing or repairing the jacket and the stud.

Description

Technical Field

[0001] The invention relates to the technical field of rapid maintenance, and in particular to a locking mechanism and a locking method. Background Art

[0002] A turntable is a mechanical device that can facilitate the switching of workstations or the circulation and transportation of the workpieces placed on it. In order to adapt to workpieces of different heights, or to connect with upstream and downstream processing equipment, the height of the turntable needs to be adjusted. Therefore, the turntable is generally placed on the main shaft, and the turntable can slide relative to the main shaft to adjust the height of the turntable, or matching threads are provided on the main shaft and the turntable, and the height of the turntable is adjusted by rotating the turntable and the main shaft relative to each other. Both of the above methods require that the turntable be fixed in position after the height position adjustment is completed, so that the turntable can be driven to rotate when the main shaft rotates.

[0003] like Figure 1 As shown, a common way to fix the turntable 1 is to set a positioning hole 121 on the sleeve 12 that is sleeved with the turntable 1 and the spindle 2, and to screw a stud in the positioning hole 121 so that the stud abuts against the spindle 2, thereby fixing and locking the turntable 1 relative to the spindle 2. After adjusting the height position of the turntable for many times, the thread in the positioning hole 121 will inevitably be damaged by thread slippage, and the turntable 1 cannot be fixed. Due to limited working space, it is often impossible to perform online tapping on the positioning hole 121, and the above-mentioned sleeve 12 structure is generally an integrated structure with the turntable 1, so the entire turntable 1 can only be disassembled for maintenance, causing equipment shutdown and affecting the production capacity of the entire production line.

[0004] Therefore, the above problems need to be solved urgently. Summary of the invention

[0005] The object of the present invention is to provide a locking mechanism and a locking method, so as to effectively lock a turntable and a main shaft, and to perform rapid repair after the locking mechanism fails.

[0006] To achieve this object, the present invention adopts the following technical solutions:

[0007] A locking mechanism, used to lock a second component sleeved outside a first component onto the first component, the locking mechanism comprising:

[0008] a first through hole, radially disposed on the second component;

[0009] A jacket, which is sleeved outside the second component, the jacket is provided with a second through hole corresponding to and communicating with the first through hole, and the second through hole is provided with an internal thread;

[0010] A stud is provided with an external thread and cooperates with the internal thread so that the end of the stud passes through the first through hole and abuts against the first component.

[0011] Preferably, the jacket comprises:

[0012] a first clamping member, wherein the first clamping member has a first bent portion;

[0013] and a second clamping member, the second clamping member having a second bent portion;

[0014] The first curved portion and the second curved portion are arranged opposite to each other to enclose and form a clamping cavity for accommodating the second component.

[0015] Preferably, the first clamping member is detachably connected to the second clamping member.

[0016] Preferably, the first curved portion and the second curved portion are symmetrically arranged.

[0017] Preferably, the outer edge contour of the cross section of the second component is a circle, the inner edge contours of the cross sections of the first curved portion and the second curved portion are both minor arcs, and the diameters of the circle and the minor arc are equal.

[0018] Preferably, at least one end of the first clamping member and the second clamping member are bolted together to be able to adjust the size of the clamping cavity.

[0019] Preferably, a diameter of the second through hole is equal to a diameter of the first through hole.

[0020] Preferably, the number of the first through holes is 2, and the two first through holes are coaxially arranged.

[0021] Preferably, the axis lines of all the first through holes intersect the axis line of the second component at right angles.

[0022] The present invention also adopts the following technical solution: a locking method, using the above-mentioned locking mechanism, the locking method comprises:

[0023] The jacket is placed outside the second component so that the second through hole is connected to the first through hole correspondingly;

[0024] The stud is screwed into the second through hole, so that the end of the stud passes through the first through hole and abuts against the first component.

[0025] Beneficial effects of the present invention:

[0026] 1. The locking mechanism and locking method provided by the present invention are implemented by placing a jacket on the second component and arranging a stud in the second through hole, so that one end of the stud passes through the first through hole and abuts against the first component, so that the jacket, the first component and the second component form an effective locking structure, ensuring that the first component and the second component can remain relatively fixed during operation.

[0027] 2. The locking mechanism provided by the present invention forms an effective locking structure between the first component and the second component mainly by the threaded fit between the internal thread provided on the inner wall of the second through hole and the external thread of the stud. Therefore, when the locking structure fails due to the failure of the threaded fit, the equipment failure caused by the failure of the locking structure can be eliminated by simply replacing or repairing the jacket and the stud without disassembling the first component and the second component. The maintenance process is simple and quick, and the production line stagnation caused by equipment downtime is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the locking structure of the turntable and the main shaft in the prior art;

[0029] Figure 2 is a schematic diagram of a structure in which a rotating disk and a main shaft are locked by a locking mechanism in an embodiment of the present invention;

[0030] Figure 3 yes Figure 2 Schematic diagram of the AA section structure.

[0031] In the figure:

[0032] 1. Turntable; 11. Turntable body; 12. Sleeve; 121. Positioning hole; 2. Main shaft; 3. First through hole; 4. Jacket; 41. First clamping piece; 42. Second clamping piece; 5. Second through hole; 6. Step mounting hole; 61. First hole section; 62. Second hole section; 7. Driving device. DETAILED DESCRIPTION

[0033] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0034] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0036] In the description of this embodiment, the terms "upper", "lower", "right", etc., directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplification of operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0037] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0038] See also Figure 2 and Figure 3 This embodiment provides a locking mechanism, which can be applied to a liftable turntable device to lock the turntable 1 and the main shaft 2 for supporting and driving the turntable 1 to rotate, and can be quickly repaired after the locking effect fails.

[0039] The turntable 1 includes a turntable body 11 and a sleeve 12 fixed at the center of the turntable body 11. The sleeve 12 has an internal thread structure such as a trapezoidal thread, and the main shaft 2 has an external thread that matches the internal thread in the sleeve 12. The turntable 1 is sleeved on the vertically extending main shaft 2, so that the turntable 1 and the main shaft 2 rotate relative to each other, so that the height of the turntable 1 can be adjusted; after the turntable 1 and the main shaft 2 are locked, the main shaft 2 is driven to rotate by a driving device 7 such as a reducer or a cam divider, so that the turntable 1 can rotate synchronously.

[0040] The locking mechanism is used to lock the second component (i.e., sleeve 12) sleeved outside the first component (i.e., main shaft 2) on the first component, and includes a first through hole 3, a jacket 4 and a stud (not shown in the figure). The first through hole 3 is radially arranged on the second component, and the jacket 4 is sleeved outside the second component. The jacket 4 is provided with a second through hole 5 corresponding to and connected with the first through hole 3, and the second through hole 5 is provided with an internal thread; the stud is provided with an external thread and cooperates with the internal thread so that the end of the stud passes through the first through hole 3 and abuts against the first component.

[0041] The locking mechanism is achieved by placing a jacket 4 on the sleeve 12 and arranging a stud in the second through hole 5, so that one end of the stud passes through the first through hole 3 and abuts against the tooth top or tooth root of the external thread of the main shaft 2, so that the jacket 4, the sleeve 12 and the main shaft 2 form a locking structure, thereby axially and radially positioning and effectively fixing the sleeve 12 and the turntable body 11 fixed to the sleeve 12, ensuring that the turntable body 11 can rotate synchronously with the main shaft 2 during operation.

[0042] When the machine is stopped, the stud is rotated in the opposite direction so that it does not abut against the main shaft 2. One of the main shaft 2 and the turntable 1 is fixed, and the other one is rotated to adjust the height of the turntable 1. After the height adjustment is completed, the stud is rotated forward so that the stud abuts against the main shaft 2 to lock the turntable 1.

[0043] After operating the stud for many times, the external thread on the stud and / or the internal thread in the second through hole 5 will inevitably be damaged by thread stripping. If the external thread on the stud is stripped, the stud can be replaced; if the internal thread in the second through hole 5 is stripped, the stud is moved out of the jacket 4 or the end of the stud that is used to abut the main shaft 2 is moved out of the first through hole 3, the jacket 4 is disassembled and replaced with a new jacket 4, and the maintenance of the locking mechanism is completed. The entire maintenance process does not require disassembly of the turntable 1 or the main shaft 2 to repair equipment failures, and the maintenance process is simple and quick. In addition, the disassembled jacket 4 can be repaired by tapping using tapping equipment for reuse.

[0044] Optionally, the diameter of the second through hole 5 is equal to the diameter of the first through hole 3, so that the outer diameter of the stud can match the diameter of the first through hole 3, avoiding the sleeve 12 from being displaced relative to the main shaft 2 due to the diameter of the first through hole 3 being larger than the outer diameter of the stud.

[0045] Optionally, the number of the first through holes 3 is two, and the two first through holes 3 are coaxially arranged. Correspondingly, the number of the second through holes 5 and the number of the studs are both two, and when the two studs are respectively screwed into the second through holes 5 and pass through the first through holes 3 to abut against the main shaft 2, the axis lines of the two studs coincide and abut against the two symmetrical sides of the main shaft 2, thereby ensuring that the main shaft 2 is locked.

[0046] Of course, the number of the first through holes 3 can also be 3, 4 or other numbers, so that the projections of the axis lines of the first through holes 3 on the plane perpendicular to the axis line of the main shaft 2 are centrally symmetrically distributed about the axis position of the main shaft 2. Preferably, the axis lines of all the first through holes 3 can intersect the axis line of the second component perpendicularly, so that the locking force of each bolt acts on the radial direction of the main shaft 2 to prevent the bolt and the main shaft 2 from sliding.

[0047] The jacket 4 may include a first clamping member 41 and a second clamping member 42, wherein the first clamping member 41 has a first curved portion, and the second clamping member 42 has a second curved portion, and the first curved portion and the second curved portion are arranged relative to each other to enclose and form a clamping cavity for accommodating the second component. In this embodiment, since the main shaft 2 is a columnar structure, the cross-sectional shape of the first curved portion and the second curved portion may be a semicircular structure, so that when the two are enclosed, a clamping cavity with a circular cross-section is formed. Preferably, the first clamping member 41 and the second clamping member 42 are detachably connected.

[0048] Preferably, the first curved portion and the second curved portion can be symmetrically arranged to simplify the disassembly and installation of the first clamping member 41 and the second clamping member 42. For example, when the cross section of the second component is circular, the cross-sectional shape of the first curved portion and the second curved portion can be symmetrically arranged semicircular arc shape or inferior arc shape, so that when installing or disassembling, the first clamping member 41 and the second clamping member 42 can be directly installed from the side of the second component. If the cross-sectional shape of one of the first curved portion and the second curved portion is a superior arc, the corresponding first clamping member 41 or the second clamping member 42 must be inserted from the end of the second component for installation, which is very inconvenient.

[0049] Furthermore, the inner edge profiles of the cross sections of the first curved portion and the second curved portion can both be minor arcs, and the diameters of the circle and the minor arc are equal. In this way, while facilitating the installation of the first clamping member 41 and the second clamping member 42 to the second component, the jacket 4 can be fastened to the second component by further reducing the spacing between the first clamping member 41 and the second clamping member 42. Optionally, at least one end of the first clamping member 41 and the second clamping member 42 is bolted together to adjust the size of the clamping cavity.

[0050] like Figure 3As shown, in this embodiment, the first clamping member 41 and the second clamping member 42 are both in the shape of a minor arc with a cross-section close to a semicircle, and the diameter of the minor arc is equal to the outer diameter of the sleeve 12. A stepped mounting hole 6 is respectively provided at both ends of the first clamping member 41 and the second clamping member 42, and each stepped mounting hole 6 includes a first hole section 61 with a larger diameter and a second hole section 62 with a smaller diameter. When the first clamping member 41 and the second clamping member 42 are opposite to each other, each second hole section 62 is arranged opposite to each other. The first clamping member 41 and the second clamping member 42 are sleeved on the outer wall of the second component, so that the stepped mounting holes 6 of the first clamping member 41 and the second clamping member 42 are opposite to each other. In the two stepped mounting holes 6 on either side, a nut with a circumscribed circle of a cross-sectional profile larger than the diameter of the second hole section 62 is arranged in the first hole section 61 of one of the stepped mounting holes 6, and a bolt with a circumscribed circle of a head cross-sectional profile larger than the diameter of the second hole section 62 is inserted into the other stepped mounting hole 6, so that the rod of the bolt passes through the second hole section 62 and is screwed and tightened with the nut, so that the first clamping member 41 and the second clamping member 42 can be fastened. Since the first clamping member 41 and the second clamping member 42 are both in the shape of a minor arc with a cross section close to a semicircle, there is a narrow gap between the two. The size of the narrow gap can be adjusted by rotating the bolt in the forward or reverse direction, that is, the size of the clamping cavity can be adjusted, so that the first clamping member 41 and the second clamping member 42 can clamp or release the sleeve 12.

[0051] It should be noted that, in other optional embodiments, the first component may also be a guide rod or a slide rail, and the second component may be a slider mechanism slidably mounted on the guide rod or the slide rail. For example, the first component is a smooth cylindrical guide rod, and the second component is slidably mounted on the guide rod to adjust the height or horizontal position of the second component. The cross section of the first component may also be other shapes besides a circle, and accordingly, the cross-sectional shapes of the first curved portion and the second curved portion may be adjusted accordingly to fit the outer contour of the second component.

[0052] This embodiment also provides a locking method of the above locking mechanism, which includes: firstly, sleeve the jacket 4 outside the second component, so that the second through hole 5 is correspondingly connected to the first through hole 3. Then, the stud is screwed into the second through hole 5, so that the end of the stud passes through the first through hole 3 and abuts against the first component.

[0053] The locking method can effectively fix the turntable 1 and the main shaft 2, and can quickly replace and repair the internal thread of the second through hole 5 when it is stripped, without disassembling the turntable 1 to repair the sleeve 12, thereby reducing equipment downtime.

[0054] The reinforcement assembly provided in this embodiment can not only be applied to the above-mentioned locking mechanism, but also be used to quickly repair equipment failures caused by thread slippage in the positioning threaded hole (first through hole 3). Specifically, the repair process can refer to the following steps:

[0055] First, measure the outer diameter of the sleeve 12 where the positioning threaded hole damaged by thread stripping is located.

[0056] Then, two semicircular or inferior arc-shaped first clamping parts 41 and second clamping parts 42 whose inner diameters of the cross sections are aligned with the outer diameter of the sleeve 12 are processed, and second through holes 5 whose apertures are aligned with the positioning threaded holes damaged by thread slippage on the sleeve 12 are prefabricated on the first clamping part 41 and / or the second clamping part 42 according to the positions and number of the positioning threaded holes on the sleeve 12.

[0057] Finally, the first clamping member 41 and the second clamping member 42 are clamped on the sleeve 12, and the prefabricated second through hole 5 on the first clamping member 41 and / or the second clamping member 42 is aligned with the threaded hole on the sleeve 12, and then the stud adapted to the internal thread of the second through hole 5 is screwed into the second through hole 5, so that the end of the stud passes through the first through hole 3 and abuts against the first component, and the repair work is completed.

[0058] Optionally, in order to deal with equipment failure caused by thread slippage in the positioning threaded hole, more than two sets of the first clamping member 41 and the second clamping member 42 can be prepared for replacement use. At the same time, the replaced first clamping member 41 and / or second clamping member 42 with thread slippage in the second through hole 5 can be repaired by tapping with tapping equipment and reused.

[0059] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A locking mechanism for locking a second component sleeved outside a first component to the first component, characterized in that: The locking mechanism comprises: A first through hole (3) radially arranged on the second component; A jacket (4) is sleeved outside the second component, the jacket (4) is provided with a second through hole (5) corresponding to and communicating with the first through hole (3), and the second through hole (5) is provided with an internal thread; A stud, the stud being provided with an external thread and cooperating with the internal thread, so that the end of the stud passes through the first through hole (3) and abuts against the first component; The jacket (4) comprises: A first clamping member (41), wherein the first clamping member (41) has a first bent portion; and A second clamping member (42), wherein the second clamping member (42) has a second curved portion; The first curved portion and the second curved portion are arranged opposite to each other to enclose and form a clamping cavity for accommodating the second component; The first clamping member (41) and the second clamping member (42) are detachably connected; The first curved portion and the second curved portion are symmetrically arranged; The outer edge contour of the cross section of the second component is a circle, the inner edge contours of the cross sections of the first curved portion and the second curved portion are both minor arcs, and the diameters of the circle and the minor arc are equal; At least one end of the first clamping member (41) and the second clamping member (42) are bolted together so as to be able to adjust the size of the clamping cavity.

2. The locking mechanism according to claim 1, characterized in that: The diameter of the second through hole (5) is equal to the diameter of the first through hole (3).

3. The locking mechanism according to claim 1, characterized in that: The number of the first through holes (3) is two, and the two first through holes (3) are coaxially arranged.

4. The locking mechanism according to claim 1, characterized in that: The axis lines of all the first through holes (3) intersect the axis line of the second component perpendicularly.

5. A locking method, using the locking mechanism according to any one of claims 1 to 4, characterized in that: The locking method comprises: The jacket (4) is sleeved outside the second component so that the second through hole (5) is connected to the first through hole (3) correspondingly; The stud is screwed into the second through hole (5), so that the end of the stud passes through the first through hole (3) and abuts against the first component.

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