Threaded main shaft fixing device of key bar type expansion shaft

Abstract

The utility model relates to the technical field of key bar type expansion shafts, in particular to a threaded spindle fixing device of a key bar type expansion shaft, which comprises an expansion shaft body and a limit mechanism, the limit mechanism is arranged at one end of the expansion shaft body, a threaded spindle body is arranged in the expansion shaft body, and the limit mechanism comprises a support and a support plate. A supporting plate is arranged above the support, a vertical plate is connected to the upper portion of the supporting plate, a through hole is formed in the vertical plate, a threaded rod is arranged in the through hole in a penetrating mode and is in sliding connection with the through hole, a first nut is in threaded connection with the outer side of the threaded rod, and an abutting plate is connected to the end, away from the first nut, of the threaded rod. According to the fixing device, in the rotating process of the key bar type expansion shaft, the threaded main shaft can be fixed, the situation that the threaded main shaft is loosened due to the inertia and the gravity of the threaded main shaft is avoided, retraction of the convex key is avoided, the fixing effect of the convex key on a winding drum is guaranteed, and therefore the winding quality is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to key strip type expansion shaft technical field, specifically disclose a key strip type expansion shaft's thread main shaft fixing device. BACKGROUND

[0002] Key strip type expansion shaft, also known as key type gas expansion shaft, the middle installation thread main shaft plays a key role in the mechanical system of key strip type expansion shaft, can adjust the tightness of expansion shaft according to actual demand, facilitate the disassembly and assembly of reel, the existing key strip type expansion shaft does not have the function of thread main shaft fixation in the process of using, make the thread main shaft loosen in the process of key strip type expansion shaft rotation due to inertia and its gravity, influence the support effect of key to reel, cause reel to loosen, further influence the effect of winding, therefore, in order to solve the above problems, the utility model provides a key strip type expansion shaft's thread main shaft fixing device. CONTENT OF UTILITY MODEL

[0003] The utility model aims at providing a key strip type expansion shaft's thread main shaft fixing device, can fix thread main shaft in the process of key strip type expansion shaft rotation, avoid loosening due to inertia and its gravity of thread main shaft, avoid key retraction, guarantee the fixed effect of key to reel, thereby guarantee the quality of winding.

[0004] The utility model is realized through the following technical schemes:

[0005] A kind of key strip type expansion shaft's thread main shaft fixing device, including expansion shaft body and limiting mechanism, one end of the expansion shaft body is provided with limiting mechanism, the inside of the expansion shaft body is provided with thread main shaft body, the inside of the thread main shaft body away from expansion shaft body is provided with multiple connection holes that present linear array distribution, the limiting mechanism includes support and support plate, the top of the support is provided with support plate, the top of the support plate is connected with vertical plate, the inside of the vertical plate is provided with through hole, the inside of the through hole is penetrated and is connected with screw rod and screw rod slidingly, the outside of the screw rod is connected with first nut, the end of the screw rod away from first nut is connected with abutment plate, the side of the abutment plate away from screw rod is connected with plug rod, the plug rod is penetrated in the inside of connection hole and is connected with connection hole slidingly.

[0006] As the further scheme of the above scheme, the end of the expansion shaft body close to the support is provided with mounting plate, the mounting plate is detachably connected with the support, and the limiting mechanism is installed and maintained conveniently, and the top of the support is connected with side plate.

[0007] As a further arrangement of the above-mentioned scheme, the interior of the two side plates is provided with a limiting hole, the two ends of the support plate are connected with a limiting rod, the two limiting rods are respectively penetrated into the interior of the two limiting holes and are in sliding connection with the limiting holes, a plurality of first springs are connected between the support and the support plate, and the moving direction of the support plate and the components above the support plate can be limited.

[0008] As a further arrangement of the above-mentioned scheme, the end of the vertical plate away from the support plate is connected with a connecting block, the interior of the connecting block is provided with a slot, the first plug block on one side of the connecting plate is connected with the slot, so that the position of the connecting plate is limited, and the outer side of the first nut is provided with a plurality of limiting blocks arranged in a circumferential array.

[0009] As a further arrangement of the above-mentioned scheme, the interior of the plurality of limiting blocks is provided with a plug hole, the side of the first nut away from the vertical plate is provided with a connecting plate, the side of the connecting plate close to the first nut is provided with a first plug block and a second plug block at the two ends, respectively, the first plug block and the second plug block are respectively inserted into the slot and the plug hole, the position of the first nut can be limited, the first nut is prevented from falling off from the outer side of the threaded rod during the rotation of the key strip type expansion shaft, the second plug block is inserted into the plug hole, the first nut is rotated, the side of the connecting plate away from the first plug block is provided with a handle, and the user can easily hold the handle.

[0010] As a further arrangement of the above-mentioned scheme, the outer side of the threaded rod is sleeved with a second spring, the two ends of the second spring are connected with the vertical plate and the abutting plate, respectively, the abutting plate is moved towards the vertical plate to extrude the second spring, the second spring is reversibly deformed, the plug rod is pulled out of the connecting hole, the fixing of the threaded main shaft body is released, the rotation of the threaded main shaft is facilitated, the abutting plate and the plug rod are moved away from the vertical plate under the rebounding action of the second spring after the threaded main shaft is rotated, the plug rod is inserted into the connecting hole, the outer side of the end of the plug rod away from the abutting plate is threadedly connected with a second nut, the position of the plug rod can be further limited, and the plug rod is prevented from shaking during the rotation of the key strip type expansion shaft.

[0011] The utility model has the following beneficial effects in the process of using:

[0012] The plurality of connecting holes at one end of the threaded main shaft body are convenient for aligning with the plug rod after the threaded main shaft body is rotated, the plug rod in the limiting mechanism is inserted into the connecting hole to limit the position of the threaded main shaft, the threaded main shaft is fixed, the plurality of first springs in the limiting mechanism are convenient for the user to press the vertical plate from the upper end of the vertical plate to the direction of the support after the threaded main shaft body is stopped, the interval between the support plate and the support is adjusted, and the plug rod is aligned with the connecting hole at a suitable position.

[0013] The combination of the first nut, the threaded rod and the second spring can drive the abutting plate to move towards the vertical plate and extrude the second spring by rotating the first nut outside the threaded rod, so that the second spring reversibly deforms, the inserting rod is pulled out of the connecting hole, the fixing to the threaded main shaft body is released, the rotation of the threaded main shaft is facilitated, and after the rotation of the threaded main shaft is completed, the first nut is reversely rotated, the abutting plate and the inserting rod move away from the vertical plate under the rebounding action of the second spring until the inserting rod is inserted into the connecting hole, the threaded main shaft body is fixed, and the use of the second nut can further limit the position of the inserting rod and avoid the shaking of the inserting rod during the rotation of the key strip type expanding shaft.

[0014] The combination of the connecting plate and the first and second inserting blocks on one side of the connecting plate can limit the position of the first nut before and after the rotation of the threaded main shaft body, avoid the falling of the first nut from the outside of the threaded rod during the rotation of the key strip type expanding shaft, and facilitate the rotation of the first nut after the second inserting block is inserted into the inserting hole. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0016] Figure 1 It is a perspective view of the present application;

[0017] Figure 2 It is a front view of the present application;

[0018] Figure 3 It is a combined perspective view of the support, the supporting plate, the vertical plate and the abutting plate in the present application;

[0019] Figure 4 It is a combined perspective view of the threaded rod and the first nut in the present application;

[0020] Figure 5 It is a perspective view of the connecting plate in the present application.

[0021] In the figure: 1, the expansion shaft body; 2, the limiting mechanism; 11, the threaded spindle body; 111, the connecting hole; 12, the mounting plate; 21, the support; 211, the side plate; 212, the limiting hole; 22, the first spring; 23, the support plate; 231, the limiting rod; 24, the vertical plate; 241, the through hole; 242, the connecting block; 243, the slot; 25, the threaded rod; 251, the first nut; 252, the limiting block; 253, the insertion hole; 26, the second spring; 27, the connecting plate; 271, the first insertion block; 272, the second insertion block; 273, the handle; 28, the abutting plate; 29, the insertion rod; 291, the second nut. DETAILED DESCRIPTION

[0022] In order to make the person skilled in the art better understand the scheme of the present application, the technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by the person skilled in the art without creative labor should belong to the protection scope of the present application.

[0023] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The present application will be described below in detail with reference to the drawings and in combination with the embodiments. Figures 1-5 The present application will be described below in detail with reference to the drawings and in combination with the embodiments.

[0024] The embodiment discloses a threaded spindle fixing device of a key-bar type expansion shaft, which comprises an expansion shaft body 1 and a limiting mechanism 2. One end of the expansion shaft body 1 is provided with the limiting mechanism 2. The inside of the expansion shaft body 1 is provided with a threaded spindle body 11. The two sides of the threaded spindle body 11 away from the inside of the expansion shaft body 1 are each provided with a plurality of connecting holes 111 arranged in a linear array. The limiting mechanism 2 comprises a support 21 and a support plate 23. The upper side of the support 21 is provided with the support plate 23. The upper side of the support plate 23 is connected with a vertical plate 24. The inside of the vertical plate 24 is provided with a through hole 241. The inside of the through hole 241 is penetrated through and connected with a threaded rod 25 in a sliding mode. The outer side of the threaded rod 25 is connected with a first nut 251 in a threaded mode. One end of the threaded rod 25 away from the first nut 251 is connected with an abutting plate 28. One side of the abutting plate 28 away from the threaded rod 25 is connected with an insertion rod 29. The insertion rod 29 penetrates through the inside of the connecting hole 111 and is connected with the connecting hole 111 in a sliding mode.

[0025] As shown in FIGS. 1 and 2, one end of the expansion shaft body 1 close to the support 21 is provided with a mounting plate 12. The mounting plate 12 is detachably connected with the support 21, so as to facilitate the installation and maintenance of the limiting mechanism 2. The upper two ends of the support 21 are each connected with a side plate 211. Figure 1 As shown in FIGS. 1 and 2, one end of the expansion shaft body 1 close to the support 21 is provided with a mounting plate 12. The mounting plate 12 is detachably connected with the support 21, so as to facilitate the installation and maintenance of the limiting mechanism 2. The upper two ends of the support 21 are each connected with a side plate 211. Figure 2 As shown in FIGS. 1 and 2, one end of the expansion shaft body 1 close to the support 21 is provided with a mounting plate 12. The mounting plate 12 is detachably connected with the support 21, so as to facilitate the installation and maintenance of the limiting mechanism 2. The upper two ends of the support 21 are each connected with a side plate 211.

[0026] As Figure 1 , Figure 2 and Figure 3 shown, the inside of two said side plates 211 is provided with a limiting hole 212, both ends of the support plate 23 are connected with a limiting rod 231, two said limiting rods 231 respectively penetrate the inside of two limiting holes 212 and are in sliding connection with the limiting hole 212, a plurality of first springs 22 are connected between the support 21 and the support plate 23, which can limit the moving direction of the support plate 23 and the components above it.

[0027] As Figure 1 , Figure 2 and Figure 3 shown, one end of the vertical plate 24 away from the support plate 23 is connected with a connecting block 242, the inside of the connecting block 242 is provided with a slot 243, which is convenient for connecting with the first plug block 271 on one side of the connecting plate 27 to limit the position of the connecting plate 27, the outside of the first nut 251 is provided with a plurality of limiting blocks 252 arranged in a circular array.

[0028] As Figure 1 , Figure 4 and Figure 5 shown, the inside of a plurality of said limiting blocks 252 is provided with a plug hole 253, the side of the first nut 251 away from the vertical plate 24 is provided with a connecting plate 27, the side of the connecting plate 27 close to the first nut 251 is provided with a first plug block 271 and a second plug block 272 at both ends respectively, the first plug block 271 and the second plug block 272 are respectively inserted with the slot 243 and the plug hole 253, which can limit the position of the first nut 251, avoid the first nut 251 from falling off the outside of the threaded rod 25 during the rotation of the key type expansion shaft, and facilitate the user to insert the second plug block 272 into the plug hole 253 to drive the first nut 251 to rotate, the side of the connecting plate 27 away from the first plug block 271 is provided with a handle 273, which is convenient for the user to grip.

[0029] As Figure 1 , Figure 2 and Figure 3As shown, the outer side of the threaded rod 25 is sleeved with a second spring 26, both ends of the second spring 26 are connected with the stand plate 24 and the abutting plate 28 respectively, which helps to move the abutting plate 28 to the direction of the stand plate 24 by rotating the outer side of the threaded rod 25 through the first nut 251 to extrude the second spring 26, so that the second spring 26 reversibly deforms, the plug rod 29 is pulled out of the connecting hole 111, the fixation on the threaded main shaft body 11 is released, and the rotation of the threaded main shaft is facilitated. After the rotation of the threaded main shaft is completed, the first nut 251 is reversely rotated, the abutting plate 28 and the plug rod 29 move away from the stand plate 24 under the rebounding action of the second spring 26, until the plug rod 29 is inserted into the connecting hole 111, the outer side of the end of the plug rod 29 away from the abutting plate 28 is threadedly connected with the second nut 291, which can further limit the position of the plug rod 29 to avoid the shaking of the plug rod 29 during the rotation of the key strip type expansion shaft.

[0030] The threaded main shaft fixing device of the key strip type expansion shaft disclosed in the embodiment is used before the support 21 in the limiting mechanism 2 is connected with the mounting plate 12, the second nut 291 is unscrewed from the outer side of the plug rod 29 and placed aside for standby, the first plug block 271 and the second plug block 272 are pulled out of the insertion groove 243 and the insertion hole 253 respectively by holding the handle, the connecting plate 27 is separated from the first nut 251 to release the fixation on the position of the first nut 251, the second plug block 272 is inserted into the appropriate insertion hole 253, the first nut 251 is rotated on the outer side of the threaded rod 25 by holding the handle through the connecting plate 27 and the limiting block 252 to adjust the distance between the abutting plate 28 and the stand plate 24, extrude the second spring 26 to make the second spring 26 reversibly deform, until the plug rod 29 is completely pulled out of the connecting hole 111, and the rotation of the first nut 251 is stopped. During the rotation of the first nut 251, in order to improve the comfort of the rotation of the first nut 251, the operation of inserting and pulling out the second plug block 272 into and out of the insertion hole 253 can be repeated.

[0031] The cylindrical object such as a reel or a paper tube is sleeved on the outside of the expanding shaft body 1, the threaded spindle body 11 is rotated, the depth of the protruding key from the expanding shaft body 1 is adjusted, until the key fixes the cylindrical object from the inside of the cylindrical object, then the threaded spindle body 11 is stopped, the first nut 251 is reversely rotated by using the connecting plate 27 and the second inserting rod 29, the rebounding action of the second spring 26 pushes the resisting plate 28 and the inserting rod 29 in the threaded spindle direction, the standing plate 24 is pressed from above the standing plate 24 to the direction of the support 21, the two limiting rods 231 are slid in the two limiting holes 212 and press the first spring 22, the position of the inserting rod 29 is adjusted, so that the inserting rod 29 is aligned with the connecting hole 111 and is inserted into the suitable connecting hole 111, the first nut 251 is continuously rotated, the side of the resisting plate 28 away from the standing plate 24 is abutted with the side of the threaded spindle, the second nut 291 is screwed back to the end of the inserting rod 29 away from the resisting plate 28, the position of the inserting rod 29 is limited, the position of the threaded spindle is fixed, the first inserting block 271 and the second inserting block 272 are respectively inserted into the inserting slot 243 and the suitable inserting hole 253, the position of the first nut 251 is limited, the first nut 251 is fixed, the first nut 251 is prevented from falling from the outside of the threaded rod 25, then the expanding shaft body 1 is driven to rotate by using the control system and the power system, and corresponding winding and unwinding operations are carried out.

[0032] The expanding shaft body 1, the threaded spindle body 11, the support 21, the side plate 211, the first spring 22, the supporting plate 23, the limiting rod 231, the standing plate 24, the threaded rod 25, the first nut 251, the second spring 26, the connecting plate 27, the first inserting block 271, the second inserting block 272, the handle 273, the resisting plate 28 and the second nut 291 in the threaded spindle fixing device of the key strip type expanding shaft disclosed by the utility model are all general standard parts or parts known by the person skilled in the art, and the structure and principle thereof can be known by the person skilled in the art through a technical manual or through a conventional experimental method.

[0033] The above is only a preferred embodiment of the utility model, and does not limit the utility model, and any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A key wayed expanding shaft threaded spindle fixing device comprising an expanding shaft body and a limiting mechanism, characterized in that, One end of the expansion shaft body is provided with a limiting mechanism, the inside of the expansion shaft body is provided with a threaded spindle body, the inside of the threaded spindle body is provided with a plurality of connection holes which are linearly arrayed, the limiting mechanism comprises a support and a supporting plate, the upper side of the support is provided with the supporting plate, the upper side of the supporting plate is connected with a vertical plate, the inside of the vertical plate is provided with a through hole, the inside of the through hole is penetrated through and connected with a threaded rod in a sliding mode, the outside of the threaded rod is connected with a first nut in a threaded mode, the end of the threaded rod which is away from the first nut is connected with a resisting plate, the side of the resisting plate which is away from the threaded rod is connected with a plug rod, the plug rod is penetrated through the inside of the connection hole and connected with the connection hole in a sliding mode.

2. A threaded spindle fixture for a keyway expansion arbor as defined in claim 1, wherein, The end of the expansion shaft body which is close to the support is provided with a mounting plate, the mounting plate is detachably connected with the support, and the upper sides of the support are connected with side plates.

3. A threaded spindle fixture for a keyway expansion arbor as defined in claim 2 wherein, The inside of each of the side plates is provided with a limiting hole, the ends of the supporting plate are connected with limiting rods, the limiting rods are respectively penetrated through the inside of the limiting holes and connected with the limiting holes in a sliding mode, and a plurality of first springs are connected between the support and the supporting plate.

4. A threaded spindle fixture for a keyway expansion arbor as defined in claim 1 wherein, The end of the vertical plate which is away from the supporting plate is connected with a connecting block, the inside of the connecting block is provided with a plug groove, and the outside of the first nut is provided with a plurality of limiting blocks which are circumferentially arrayed.

5. A threaded spindle fixing device for a keyway expansion spindle as claimed in claim 4, characterised in that, The inside of each of the limiting blocks is provided with a plug hole, the side of the first nut which is away from the vertical plate is provided with a connecting plate, the side of the connecting plate which is close to the first nut is provided with a first plug and a second plug at the two ends, respectively, the first plug and the second plug are respectively inserted into the plug groove and the plug hole, and the side of the connecting plate which is away from the first plug is provided with a handle.

6. A threaded spindle fixture for a keyway expansion arbor as defined in claim 1, wherein, The outside of the threaded rod is sleeved with a second spring, the two ends of the second spring are connected with the vertical plate and the resisting plate, respectively, and the end of the plug rod which is away from the resisting plate is connected with a second nut in a threaded mode.

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