WO2011153960A1

WO2011153960A1 - Spring driving tumbler and machine equipped with the tumbler

Info

Publication number: WO2011153960A1
Application number: PCT/CN2011/075588
Authority: WO
Inventors: 贺电; 李向军; 罗斌
Original assignee: 湖南三一智能控制设备有限公司; 三一重工股份有限公司
Priority date: 2010-06-10
Filing date: 2011-06-10
Publication date: 2011-12-15
Also published as: CN202011678U

Abstract

A spring driving tumbler (40) comprises a fixed and stationary mainshaft (9), a tumbler casing rotatablely mounted around the mainshaft (9), a rotary joint (14) connected to the tumbler casing in anti-torsion way, a pipeline (25) winding in the tumbler casing, the initial end of which is connected to the rotary connector (14) and the pulling-out of which drives the rotary joint (14) to rotate, and a spring assembly (8), one end of which is connected to the mainshaft (9), and the other end of which is connected to the tumbler casing. The spring assembly (8) is driven by the tumbler casing to generate a pretightening force. The spring driving tumbler (40) further comprises a pretightening locking device. The pretightening locking device comprises a first fixed portion, a second fixed portion and a locking member. The first fixed portion is fixed on the mainshaft (9), and the second fixed portion is fixed on the rotary joint (14) or the tumbler casing, and the locking member can be engaged with the first fixed portion and the second fixed portion, respectively, thereby limiting the relative motion between the first fixed portion and the second fixed portion. The spring driving tumbler (40) can implement self-locking by the pretightening force, thereby safely mounting the pipeline (25).

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spring-driven reel and a construction machine having the same. BACKGROUND OF THE INVENTION Spring-driven rotating drums (such as drums with coil springs) need to be locked with a certain preload force after winding the pipeline (ie, keep the entire drum stationary) to keep the preload force from occurring. Great changes, and assembly of the pipeline at this time. In the prior art, the pipeline is usually pulled out for a certain length (the outer casing of the turntable rotates around the main shaft of the turntable as the pipeline extends), and the rigid body of the rod is in contact with the protrusion on the turntable housing (as a fixed contact point). Then, the rigid body contact with the earth is used to realize the rotation of the turntable casing, thereby achieving the purpose of maintaining the pre-tightening force and installing the pipeline. The whole process is quite complicated and dangerous, and there is no safety guarantee. Therefore, there is an urgent need to provide a guarantee that the drum (such as with a coil spring) can be self-locked after the pre-tightening force is reached, so that the worker can install the pipeline. SUMMARY OF THE INVENTION It is an object of the present invention to overcome the disadvantages of the prior art and to provide a spring-driven reel capable of self-locking after the pre-tensioning force is reached for safe and reliable installation of the pipeline. To this end, the present invention provides a spring-driven reel, the spring-driven reel includes: a main shaft; a reel housing, the reel housing is rotatably mounted on the main shaft; the rotary joint is resistant to twisting with the rotary housing Connecting; the pipeline is wound in the drum casing, the starting end of the pipeline is connected with the rotary joint and the pulling of the pipeline drives the rotary joint to move; the spring assembly has one end connected to the main shaft and the other end connected to the drum casing, and is rotated The cylinder housing is rotated to generate a pre-tightening force, and the spring-driven rotating drum further comprises a pre-tightening locking device, wherein the pre-tightening locking device comprises a first fixing portion and a second fixing portion and a locking member, wherein the first fixing portion is disposed on the main shaft The second fixing portion is disposed on the rotary joint or the drum housing, and the locking member can be respectively engaged with the first fixing portion and the second fixing portion to prevent the first fixing portion and the second fixing portion when the pipeline stops pulling out Relative movement between. In the present invention, when the pipeline is pulled out, at this time, since the main shaft is fixed, the rotary housing drives the drum housing and the spring assembly to move, and the spring assembly generates a preload force, when the pipeline is no longer pulled out. When a certain pre-tightening force is reached, when the pre-tightening force generated by the spring assembly is to drive the drum casing to revolve to retract the pipeline, the locking member locks the first fixing portion and the first The two fixing parts, thus locking the main shaft and the rotary joint or the drum housing, prevent the pipeline from being retracted by the pre-tightening force, and realize the locking of the pre-tightening force, thereby facilitating the installation of the pipeline. The pipeline in the present invention may be a hose used as a fuel pipe or may be another pipeline such as an electric pipeline. According to a preferred embodiment of the present invention, the first fixing portion is a first bolt hole; the second fixing portion is a second bolt hole; the locking member comprises a plate-shaped member and a fastening bolt, wherein the plate-shaped member is respectively provided with a first a bolt hole corresponding to the third bolt hole corresponding to the second bolt hole, and the fastening bolt is installed in the bolt hole corresponding to the first fixing portion and the second fixing portion. The bolt holes on the plate member are aligned with the bolt holes on the main shaft and aligned with the bolt holes on the rotary joint or the drum housing, and the fastening bolts are inserted to lock, thereby realizing the spindle and the structure in a simple and low cost manner. Fixing of the rotary joint or the drum housing. In this embodiment, the plate member is secured by fastening bolts when the line is stretched out to a certain preload. When the line needs to be retracted, the plate is removed accordingly. As an alternative to the above solution, the first fixing portion is a reverse bolt assembly, the locking member is a check claw, and the second fixing portion is a toothed jaw. Due to the structural characteristics of the one-way rotation of the check pawl to the reverse stop, the tooth profile is allowed to rotate only when the pipeline is pulled out, and the rotation is stopped when the pipeline is stopped, so that the pipeline can be smoothly pulled out when the pipeline is pulled out. And it is prevented from being recovered due to the preload force when the pipeline is stopped. Another advantage of this embodiment is that the reverse bolt assembly, the check pawl, the toothed jaw can be installed before the pipeline reaches the desired preload. When the pipeline needs to be retracted, the reverse bolt assembly, the check pawl, and the tooth profile are removed accordingly. Preferably, the reverse bolt assembly includes a body and a reverse bolt, and the body is fixed to the main shaft by a reverse bolt, and the thread rotation direction of the reverse bolt matches the direction of the pre-tightening force. Thereby, the retraction of the pipeline which may be caused by the pre-tightening force is further prevented. Preferably, one end of the check pawl is connected to the body by a reverse bolt, and the other end is engaged in the tooth groove of the toothed bore. The installation of the pretensioning locking device is thus achieved in a structurally simple manner. Preferably, a spring having one end mounted to the reverse bolt and the other end fixed to the check claw is further provided to control the check pawl in a proper position. Preferably, the toothed jaw is fixed to the rotary joint or the drum housing by a fixing bolt. The advantage of fixing with a fixing bolt is that it is easy to assemble and disassemble. Preferably, the spring assembly is a coil spring assembly, the small diameter end of the coil spring is coupled to the main shaft and the large diameter end is coupled to the drum housing. With the coil spring, the preload force can be better achieved. The invention also relates to a construction machine comprising a spring-driven drum for a pipeline. The spring-driven drum is the above-described spring-driven drum. The spring-driven reel according to the present invention enables self-locking of the pre-tightening force, so that the pipeline can be safely installed. The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawings: Figure 1 shows a front view and a side view of a prior art spring-driven reel; Figure 2 shows an exploded view of a prior art spring-driven reel; Figure 3, 4 1 is an assembled view and a cross-sectional view, respectively, of a spring-driven rotating drum according to a first embodiment of the present invention; FIG. 5 shows a preloading of a spring-driven rotating drum according to a second embodiment of the present invention. Lock the device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. 1 and 2 respectively show an assembled view and an exploded view of a prior art spring-driven reel 40. Referring to Figure 1, the line 25 can be rotatably pulled out of the spring-driven drum 40. Referring to Fig. 2, the spring-driven reel 40 mainly comprises a reel housing composed of a cover 7, a disc 11, a disc 12, a disc housing 19, a spring assembly 8, a stationary spindle 9, and a rotary joint 14, etc. The main components. A pipe is wound in the drum housing. The spring assembly is a coil spring assembly, and of course other spring assemblies such as torsion springs can also be used. The coil spring assembly includes a coil spring 8, the small diameter end of which is coupled to the main shaft 9, and the largest diameter end is coupled to the drum housing. The cover 7 of the drum housing is rotatable relative to the main shaft 9. The rotary joint 14 is in anti-twist connection with the cover 7 and thus the drum housing and the rotary joint 14 is connected to the starting end of the line. A gap is assembled between the rotary joint 14 and the main shaft 9, and there is a rotational fit relationship therebetween. Thus, when the line 25 is withdrawn, the line 25 drives the rotary joint 14 to rotate, and the rotation The adapter 14 in turn drives the drum housing and the spring assembly to rotate relative to the central shaft 9, which produces a preload. The spring-driven drum 30 further includes a Teflon seal ring 15, a sigma ring 16, a metal strip 17, a fixing pin 18, an end cap 20, a screw 4, a nipple member 22, a copper pad 23, and a seal assembly 24. And further comprising a screw 4, a spring washer 2, a bracket 3, a seal 4, a nut 5, a bolt 6, a fixing pin 10, a screw 13, etc., the above-mentioned drum housing, spring assembly 8, fixed The main shaft 9 and the rotary joint 14 are assembled. 3 and 4 respectively show an assembled view and a cross-sectional view of a spring-driven reel according to a first embodiment of the present invention. As can be seen from the figures, a major improvement over the prior art of the present invention is the addition of a pre-tensioning locking device. The pretensioning locking device is mounted for preload locking when the line is stretched out to a certain preload. The pre-tightening locking device comprises a first fixing portion provided on the main shaft 9, the first fixing portion being a bolt hole 30 in this embodiment; further comprising a second fixing portion provided on the rotary joint 14 or the drum housing, The second fixing portion is a bolt hole 28 in this embodiment; further comprising a locking member, which in this embodiment is a plate member 26 having a bolt hole 29 and a fastening bolt 27. The bolt holes 29 on the plate member 26 are respectively aligned with the bolt holes 28 and the bolt holes 30, and the plate member 26 is mounted when the pipe pulls out to reach a certain preload, and the fastening bolts are screwed into the alignment. In the screw hole. This avoids the spring's restoring force and retracts the pipeline. When the line needs to be retracted, the plate member 26 and the fastening bolt 27 are removed accordingly. Figure 5 shows a pretensioning locking device for a spring-driven reel according to a second embodiment of the invention. In this embodiment, the first fixing portion is a reverse bolt assembly 32, the locking member is a check claw 33, and the second fixing portion is a toothed jaw 31. The reverse bolt assembly 32 includes a body 35 and a reverse bolt 34, and the body 35 is fixed to the main shaft 9 by a reverse bolt 34. The reverse bolt assembly is screwed by the reverse bolt 34 to set the rotation direction to match the reeling rotation direction of the coil spring ( For example, as shown in FIG. 5, it is assumed that the reverse bolt 34 is a left-handed thread and the coil spring is retracted in a counterclockwise direction, thereby realizing the reverse bolt assembly 32 when the coil spring 8 has a retracting tendency under the elastic restoring force. The anti-loose function further prevents the retraction of the pipeline that may be caused by the pre-tightening force. The check claw 33-end is connected to the body 35 through the reverse bolt 34, and the other end is engaged in the tooth groove of the toothed cymbal 31. A spring 36 having one end mounted to the reverse bolt 34 and the other end fixed to the check pawl 33 is provided, and when the check pawl 33 and the toothed jaw 31 cooperate to control the retraction of the coil spring, the check pawl 33 receives the tooth shape The force of the jaws causes the spring 36 to compress and deform and produces a restoring force that urges the pawl 22 into close engagement with the toothed jaw, further enhancing the positioning of the pawl to the gum. The toothed jaws 31 are fixedly coupled to the rotary joint 14 by means of two fixing bolts 37. The advantage of fixing by means of the fixing bolts is that it is easy to assemble and disassemble. When the free end of the pipeline exposed outside the drum is pulled out by the force, the rotary joint 14 rotates relative to the main shaft 9, and the coil spring 8 follows the tension, generating a reverse retracting force, that is, a preload, and the teeth The shape 31 is rotated together with the rotary joint 14 by the fixing bolt 37, and the check claw 33 allows the toothed jaw 31 to rotate clockwise in Fig. 5 due to the structural feature of the reverse rotation of the one-way rotation, that is, the rotation direction of the pipeline is allowed to be clockwise. When it is pulled out, when the pre-tightening force demand is reached, if the free end of the exposed line of the pipeline is released at this time, the coil spring 8 will exert a force opposite to the clockwise rotation of the turntable, so that the rotary joint 14 and the toothed jaw 31 are counterclockwise. The movement around the main shaft 9, but due to the action of the check claws 33, the toothed jaws 32 and the rotary joint 14 at this time cannot move counterclockwise around the main shaft 9, so that the coil spring maintains the preload force at this time. Another advantage of this embodiment is that the reverse bolt assembly, the check pawl, and the toothed jaw can be installed before the pipeline is ready to be pulled out. When the pipeline needs to be retracted, the reverse bolt assembly, the check pawl, and the tooth profile are removed accordingly. In the above embodiment, although the second fixing portion is shown as being disposed on the rotary joint, it is obviously also conceivable that the second fixing portion is disposed on the drum housing, and the rotary joint and the drum housing are anti-twisted connection. That is, the rotary joint and the drum housing are interlocked. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the scope of the present invention are intended to be included within the scope of the present invention.

Claims

A spring-driven reel (40) comprising: a main shaft (9);

a drum housing, the drum housing is rotatably mounted on the spindle (9); a rotary joint (14) is anti-twisted with the drum housing (9);

a line (25), wound in the drum housing, a starting end of the line is connected to the rotary joint (14) and the pull-out of the line drives the rotary joint to move;

a spring assembly (8), the end is connected to the main shaft (9) and the other end is connected to the drum housing, and is rotated by the drum housing to generate a preload.

The utility model further includes a pre-tightening locking device, wherein the pre-tightening locking device comprises a first fixing portion and a second fixing portion and a locking member, wherein the first fixing portion is disposed on the main shaft (9), The second fixing portion is disposed on the rotary joint (14) or the drum housing, and the locking member can be respectively engaged with the first fixing portion and the second fixing portion to limit the first fixing portion and the first fixing portion The relative movement of the two fixed parts. The spring-driven rotating drum (40) according to claim 1, wherein the first fixing portion is a first bolt hole (30); the second fixing portion is a second bolt hole (28); The locking member includes a plate-shaped member (26) and a fastening bolt (27), wherein the plate-shaped member is provided with a third bolt hole corresponding to the first bolt hole and the second bolt hole, respectively

(29), the fastening bolt (27) is installed in the bolt hole corresponding to the plate-shaped member and the first fixing portion and the second fixing portion. The spring-driven reel (40) according to claim 1, wherein the first fixing portion is a reverse bolt assembly (32), and the locking member is a check claw (33), The second fixing portion is a toothed crucible (31). The spring-driven rotating drum (40) according to claim 3, wherein the reverse bolt assembly (32) comprises a body (35) and a reverse bolt (34), and the body (35) passes through The reverse bolt (34) is fixed to the main shaft (9), and the thread rotation direction of the reverse bolt (34) matches the direction of the pre-tightening force.

The spring-driven rotating drum (40) according to claim 4, wherein the check claw (33) end is connected to the body (35) through a reverse bolt (34), and the other end Engaged in the slots of the toothed jaw (31).

6. The spring-driven rotating drum (40) according to claim 5, further comprising: one end mounted to the reverse bolt (34) and the other end mounted to the check claw (33) Spring ( ₃₆ ).

7. The spring-driven rotating drum (40) according to claim 3, characterized in that the toothed jaw (31) is fixed to the rotary joint (14) or the rotary cylinder housing by a fixing bolt (37) .

The spring-driven rotating drum (40) according to any one of claims 1 to 7, wherein the spring assembly is a coil spring assembly, and the small diameter end of the coil spring and the main shaft (9) A connecting and large diameter end is coupled to the drum housing.

A construction machine comprising a spring-driven reel (40) for a pipeline, characterized in that the spring-driven reel is the spring-driven reel according to any one of claims 1 to 8. (40).