CN211662993U - Screw-in type trundle mounting device - Google Patents

Abstract

The utility model discloses a screw-in truckle installation device belongs to truckle technical field, specifically includes: truckle subassembly, sleeve, screw rod and cover are located nut on the screw rod, the sleeve sets firmly on treating the mobile device, the screw that runs through its major axis is seted up at the sleeve middle part, the double-screw bolt has set firmly on the truckle subassembly, double-screw bolt and screw rod set up relatively, just double-screw bolt and screw rod with the screw spiro union, the screw rod passes through the nut locking. The utility model discloses a mutual butt of screw rod and double-screw bolt to form closely to cooperate with the sleeve spiro union, rethread nut locking screw forms dual fixed, makes and treats that mobile device and truckle subassembly mutual stabilization are connected and can not produce not hard up phenomenon. And the assembly process is simplified, and the processing cost of the sleeve is reduced.

Description

Screw-in type trundle mounting device

Technical Field

The utility model relates to a truckle technical field, in particular to screw-in truckle installation device.

Background

The caster is a part which is arranged at the bottom of a device to be moved and is convenient to move, is widely applied to products such as a trolley, a box body and a seat, and is indispensable to people in the fields of home, travel, medical treatment and the like. At present, the caster comprises a fixed caster and a movable caster, the fixed caster is also called a directional wheel, has no rotating structure and cannot rotate, and mainly comprises a support frame, a bearing and a fixed bolt, while the movable caster, namely a universal wheel, also comprises a base and a rotating structure, and the structure of the base allows 360-degree rotation; typically, two casters are used in combination. During installation, the screw of the support frame is inserted into the installation hole of the device to be moved and is screwed down by the nut. But in the running process of the caster, the screw is easy to loosen under the influence of external impact, and the use is unsafe.

Chinese patent No. CN201820672980.3 discloses a caster connecting device, which comprises a sleeve, a roller support, a roller and a bolt, wherein the sleeve comprises a sleeve body and a sleeve bottom, the sleeve body and the sleeve bottom are integrally formed, the bolt sequentially and spirally penetrates through a screw hole arranged on the transverse part of the roller support and a screw hole arranged on the vertical central line of the sleeve bottom, and the roller support is fixedly connected with the sleeve by using a nut; the device also comprises a workpiece inserting rod fixing device; the annular positions of the upper and lower sides of the screw hole on the inner surface of the wall of the sleeve body are respectively provided with 1 annular convex rib. The workpiece inserting rod is inserted into the sleeve, and then the workpiece inserting rod is tightly jacked and fixed through a screwed workpiece inserting rod jacking bolt screwed into the side surface of the sleeve. However, the above method has high requirements on processing, two different screw holes on the sleeve are mutually crossed, and when the processing is not good, the screw threads are mutually damaged, so that the tightening bolt is not smoothly screwed in; secondly, in the running process of the caster, the workpiece insertion rod inevitably generates vibration, so that the puller bolt is loosened; and sleeve and puller bolt form fixed knot to construct, can't adjust truckle connecting device height for application scope is less.

SUMMERY OF THE UTILITY MODEL

Not enough to above prior art, the utility model aims to provide a screw-in truckle installation device is through the mutual butt of screw rod and double-screw bolt to form closely to cooperate with the sleeve spiro union, rethread nut locking screw rod forms dual fixed, makes and treats mobile device and truckle subassembly mutual stabilization and be connected and can not produce not hard up phenomenon. And the assembly process is simplified, and the processing cost of the sleeve is reduced.

In order to achieve the above object, the present invention is specifically realized by the following techniques:

the utility model provides a screw-in truckle installation device, includes truckle subassembly, sleeve, screw rod and cover and locates nut on the screw rod, the sleeve sets firmly on treating the mobile device, the screw that runs through its major axis is seted up at the sleeve middle part, the double-screw bolt has set firmly on the truckle subassembly, double-screw bolt and screw rod set up relatively, just double-screw bolt and screw rod with the screw spiro union, the screw rod passes through the nut locking.

The scheme is adopted: during installation, the stud is screwed into the sleeve from the lower part of the sleeve, so that the caster wheel assembly is fixed on a device to be moved, the screw is screwed into the upper part of the sleeve until the tail part of the screw abuts against the stud, the caster wheel can be locked in a certain direction by screwing the screw, and the nut is screwed towards the direction of the sleeve to lock the screw. Borrow this, the afterbody of screw rod supports tightly in the double-screw bolt top to form closely cooperating with the internal thread of the external screw thread connecting sleeve medial surface of its lateral surface, rethread nut locking screw rod forms dual fixed, makes and treats mobile device and truckle subassembly reciprocal stable connection and can not produce not hard up phenomenon, treats that the mobile device utilizes the smooth and stable removal of wheel body of truckle subassembly bottom. Secondly, the screwing depth of the stud is adjusted through the screwing depth of the screw, so that the mounting height of the whole caster device is adjusted, the requirements of operators in different working places and different heights are met, and the application range is expanded.

Furthermore, the screw rod further comprises a gasket, the gasket is sleeved on the screw rod, and the nut is arranged above the gasket and compresses the gasket.

Further, the gasket is a spring washer or a lock washer.

The scheme is adopted: under the nut screwing state, the gasket generates micro-deformation, so that tensioning force exists between the nut and the sleeve all the time, and the anti-loosening effect of the nut is improved. The pretightning force can be increaseed to the spring washer, and the tension between the usable two gaskets of lock washer reaches locking and tight dual effect of system, and then prevents to be not hard up because of the screw rod that the vibrations of truckle in the in-process of marcing arouse, improves the security of using.

Further, the sleeve is made of round steel, and the round steel can be made of Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65Mn, 50Cr, 3Cr2W8V, 20CrMnTi or 5 CrMnMo.

Further, the caster wheel assembly is a directional wheel assembly or a universal wheel assembly. When it is an oriented wheel assembly, comprising: the device comprises a support, a wheel shaft and a caster wheel, wherein the caster wheel can rotate relative to the wheel shaft, the fixed column is fixedly connected with the support, and the support is fixedly connected with the wheel shaft, so that the directional wheel assembly is fixedly arranged on the device to be moved; when it is a universal wheel assembly, it comprises: the universal wheel assembly comprises a support, a plane bearing, a wheel shaft and a trundle, wherein the fixing column is fixedly connected with the support, the support is rotatably connected with the plane bearing, and the plane bearing is rotatably connected with the wheel shaft, so that the universal wheel assembly is fixedly arranged on a device to be moved.

Further, the bracket of the caster wheel assembly and the stud are integrally formed.

Furthermore, a brake crank is arranged on the caster wheel assembly, so that braking is facilitated.

The utility model has the advantages that:

1. through mutual butt of screw rod and double-screw bolt to form closely cooperating with the sleeve spiro union, rethread nut locking screw forms dual fixed, makes and treats that mobile device and truckle subassembly stablizing each other are connected and can not produce not hard up phenomenon, treats that the wheel body that mobile device utilized truckle subassembly bottom is smooth and stable removes. Compared with the prior art, the mounting quantity and the mounting workload of the bolts and the nuts are reduced, the assembly process is simplified, and the processing cost of the sleeve is reduced.

2. The screwing depth of the screw bolt is adjusted through the screwing depth of the screw rod, so that the mounting height of the whole caster device is adjusted, the requirements of operators in different working places and different heights are met, and the application range is expanded.

3. Be equipped with the gasket between nut and the sleeve, can guarantee to have the tight power that rises all the time between nut and the sleeve under the nut state of screwing up, play locking and the tight effect of system, the screw rod that prevents to shake and arouse is not hard up, improves the security of using.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view of a screw-in caster mounting device of embodiment 1;

FIG. 2 is a schematic view showing the installation of the caster of embodiment 1;

fig. 3 is a schematic structural view of the screw-in caster mounting device of embodiment 2;

in the drawings, 1, a caster wheel assembly; 11. a support; 12. a wheel axle; 13. a caster wheel; 14. a flat bearing; 15. a brake crank; 2. a sleeve; 3. a screw; 4. a nut; 5. a gasket; 6. a stud; 7. the device is to be moved.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

A screwed-in type caster wheel mounting device is disclosed, referring to Figs. 1-2, and comprises a caster wheel component 1, a sleeve 2, a screw rod 3 and a nut 4 sleeved on the screw rod 3, in the embodiment, the screw rod 3 is an M12 bolt, the sleeve 2 is made of round steel, the round steel has good hot working and cutting performances, and high strength and toughness; the sleeve 2 is fixedly arranged on the to-be-moved device 7, the sleeve 2 can be fixedly arranged on the to-be-moved device 7 through welding or through a hoop component, a detachable structure is formed, a screw hole penetrating through a long shaft of the sleeve 2 is formed in the middle of the sleeve 2, a stud 6 is fixedly arranged on the caster wheel component 1, the stud 6 and the screw rod 3 are oppositely arranged and are in threaded connection with the screw hole, and the screw rod 3 is locked through the nut 4. Promptly the top of double-screw bolt 6 stretches into in the screw hole, 6 lateral surfaces of double-screw bolt are equipped with the external screw thread, the medial surface of screw hole is equipped with the internal thread, forms the tight fit through interior external screw thread connection, 6 afterbody of double-screw bolt with 1 fixed connection of truckle subassembly, relative the setting the afterbody of screw rod 3 stretches into in the through-hole and with screw threaded connection forms the tight fit, after truckle subassembly 1 installs to treating mobile device 7, the afterbody of screw rod 3 with the top butt of double-screw bolt 6. Through the mutual butt of screw rod 3 and double-screw bolt 6 to form closely cooperating with sleeve 2 spiro union, rethread nut 4 locking screw rod 3 forms dual fixed, makes and treats that mobile device 7 and truckle subassembly 1 mutual stable connection can not produce not hard up phenomenon, treats that mobile device 7 utilizes the smooth and stable removal of wheel body in truckle subassembly 1 bottom. Compared with the prior art, only one screw 3 and one nut 4 are required to be matched and locked, the mounting quantity and the mounting workload of the screw and the nut 4 are reduced, the assembly process is simplified, and the processing cost of the sleeve 2 is reduced. The top of screw rod 3 is equipped with the screw rod cap, the diameter of screw rod cap is greater than the diameter of double-screw bolt 6 prevents that nut 4 from deviating from.

Further preferably, the screw rod further comprises a gasket 5, the gasket 5 is sleeved on the screw rod 3, the nut 4 is arranged above the gasket 5 and compresses the gasket 5, and the gasket 5 is preferably a spring washer or a check washer. Guarantee to have the tension all the time between nut 4 and sleeve 2 under 4 states of screwing up of nut, play locking and the effect of system tight, prevent that the screw rod 3 that vibrations arouses is not hard up, improve the security of using.

The caster assembly 1 may be a directional wheel assembly or a universal wheel assembly. When it is an oriented wheel assembly, see fig. 1, comprising: the device comprises a support 11, a wheel shaft 12 and a caster 13, wherein the caster 13 can rotate relative to the wheel shaft 12, the fixed column is fixedly connected with the support 11, the support 11 is fixedly connected with the wheel shaft 12, and therefore the directional wheel assembly is fixedly arranged on the device to be moved 7; when it is a universal wheel assembly, see fig. 2, it comprises: the device comprises a support 11, a plane bearing 14, a wheel shaft 12 and a caster 13, wherein the fixed column is fixedly connected with the support 11, the support 11 is rotatably connected with the plane bearing 14, and the plane bearing 14 is fixedly connected with the wheel shaft 12, so that the universal wheel assembly is fixedly arranged on the device to be moved 7. Preferably, the bracket 11 of the caster assembly 1 is integrally formed with the stud 6. The diameter of the support 11 is larger than that of the stud 6, a boss is formed at the bottom of the stud 6, and the sleeve 2 is limited. In order to facilitate braking, a brake crank 15 is arranged on the caster wheel component 1. In the present embodiment, only one exemplary structure of the caster wheel assembly 1 is shown, and those skilled in the art will appreciate that other structures of the directional wheel assembly or the universal wheel assembly may be applied to the technical solution of the present invention.

Example 2

The embodiment 2 is basically the same as the embodiment 1, and is different from the embodiment 1 in that the installation height of the whole caster device can be adjusted by increasing the screwing depth of the screw rod and reducing the screwing depth of the stud, so that the requirements of operators in different work places and different heights are met, and the application range is expanded, referring to fig. 3.

Claims (7)

1. The utility model provides a screw-in truckle installation device, its characterized in that is located including truckle subassembly (1), sleeve (2), screw rod (3) and cover nut (4) on screw rod (3), sleeve (2) set firmly on treating mobile device (7), the screw that runs through its major axis is seted up at sleeve (2) middle part, double-screw bolt (6) have set firmly on truckle subassembly (1), double-screw bolt (6) and screw rod (3) set up relatively, just double-screw bolt (6) and screw rod (3) with the screw spiro union, screw rod (3) pass through nut (4) locking.

2. The screw-in caster mounting device according to claim 1, further comprising a washer (5), wherein the washer (5) is fitted over the screw (3), and the nut (4) is disposed over the washer (5) and presses the washer (5).

3. A screw-in caster mounting device according to claim 2, wherein said spacer (5) is a spring washer or a lock washer.

4. A screw-in castor mounting device according to any one of claims 1 to 3, wherein the sleeve (2) is made of round steel.

5. A screw-in caster mounting device according to claim 1, wherein said caster assembly (1) is a directional wheel assembly or a cardan wheel assembly.

6. A screw-in caster mounting device according to claim 1, characterised in that the bracket (11) of the caster assembly (1) is integrally formed with the stud (6).

7. A screw-in caster mounting device according to claim 1, wherein the caster assembly (1) is provided with a brake crank (15).

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