Tensioning mechanism suitable for field boring

Abstract

The utility model discloses a tensioning mechanism suitable for on-site boring, which comprises a lengthened hexagon wrench and a middle seat, and a support ring is arranged on the inner surface wall of the middle seat. According to the device, a lengthened hexagon wrench penetrates through a corresponding hexagonal through hole, then the hexagon wrench drives a worm to rotate, the worm drives a turbine to rotate through meshing, the turbine is linked with a tensioning lead screw to rotate, the tensioning lead screw is screwed with the inner surface wall of the tensioning rod to provide driving force for the tensioning rod, and a guide screw synchronously slides in a sliding groove; the tensioning rods horizontally stretch out till the tensioning rods abut against the inner surface wall of the redundant channel, in the same way, driving of the four sets of tensioning rods is achieved in the mode till the tensioning mechanism is stably erected in the redundant channel, and the tensioning rods are driven by the worm wheel and the worm in cooperation with a hexagonal through hole formed in a profiling mode. Operators can complete operation of the tensioning mechanism outside a redundant way, and therefore the application range of the tensioning mechanism suitable for on-site boring is widened.

Description

TECHNICAL FIELD

[0001] The utility model relates to bore fitting technical field especially suitable for the expansion mechanism of on -the -spot boring. BACKGROUND

[0002] When the hole with small diameter and long stroke is processed on site, if the intermediate position is not additionally supported, the tool will vibrate due to insufficient rigidity of the boring bar during the processing process, which affects the size accuracy after processing, and even leads to normal processing, so the expansion mechanism needs to be used.

[0003] In the traditional expansion mechanism, a hexagonal rod is processed on the expansion screw rod, and the hexagonal rod is turned with an open wrench to rotate the expansion screw rod, and the expansion rod is pushed out to play the expansion effect, however, when installing in the hole with small diameter and deep depth, due to space limitation, the open wrench cannot work normally, and the traditional expansion mechanism cannot complete the expansion purpose, thereby increasing the limitation of the use of the expansion mechanism, and therefore the corresponding expansion mechanism suitable for on-site boring is urgently needed to solve the above problems. UTILITY MODEL CONTENTS

[0004] The utility model aims at: in order to solve the above problem, and propose a kind of expansion mechanism suitable for on-site boring.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] An expansion mechanism suitable for on-site boring, including lengthened hexagonal wrench and middle seat, the support ring is arranged on the inner wall of the middle seat, the outer wall of the middle seat is integrated with a plurality of groups of annularly distributed telescopic components, a plurality of telescopic components include shell, expansion rod, worm, turbine and the pushing part for the push and pull of expansion rod, the worm and turbine are rotatably connected with the inner wall of shell, and the turbine is meshed with the worm, the hexagonal hole is provided in the longitudinal end of the worm.

[0007] Preferably, the shell includes two groups of parts, the two groups of parts are fixedly connected by locking rod two, and the two groups of parts are fixedly connected with the middle seat by two groups of locking rod one.

[0008] Preferably, the worm and turbine are rotatably connected with the inner wall of shell through bearing one and bearing two respectively.

[0009] Preferably, the pushing part includes expansion screw rod fixedly connected with the outer wall of turbine and limiting piece for the axial limiting of expansion rod, and the outer wall of expansion screw rod is screw-connected with the inner wall of expansion rod.

[0010] Preferably, the limiting piece includes guide screw fixedly connected with the inner wall of shell, and the outer wall of guide screw is slidingly connected with the outer wall of expansion rod through sliding groove.

[0011] Preferably, the tension rod open end is provided with rough lines.

[0012] In summary, due to the adoption of the technical scheme, the utility model has the beneficial effects that:

[0013] 1、In the application, the overall tensioning mechanism is placed in the redundant channel, the lengthened hexagonal wrench is passed through the corresponding hexagonal hole, then the hexagonal wrench drives the worm to rotate, the worm drives the turbine to rotate through meshing, the turbine drives the tensioning screw rod to rotate through linkage, the tensioning screw rod provides driving force for the tension rod through screwing with the inner wall of the tension rod, the guide screw synchronously slides with the sliding groove to axially constrain the tension rod, the tension rod horizontally extends until abutting against the inner wall of the redundant channel, and similarly, the above-mentioned mode is used to drive four groups of tension rods respectively until the tensioning mechanism is stably erected in the redundant channel, the hexagonal hole matched with the worm through the turbine is used to enable the operator to complete the operation of the tensioning mechanism outside the redundant channel, thereby improving the application range of the tensioning mechanism suitable for on-site boring.

[0014] 2、In the application, the shell is combined by two groups of split bodies through the locking rod two, and the two groups of split bodies are fixed with the middle seat through the two groups of locking rod one, so that multiple telescopic assemblies can be independently disassembled, and the telescopic assembly itself can be quickly disassembled, thereby ensuring the convenience of maintenance and replacement of internal parts of the tensioning mechanism, and improving the convenience of use of the tensioning mechanism suitable for on-site boring. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 An overall structure schematic view provided by the embodiment of the utility model is shown;

[0016] Figure 2 A middle seat structure schematic view provided by the embodiment of the utility model is shown;

[0017] Figure 3 A tension rod structure schematic view provided by the embodiment of the utility model is shown;

[0018] Figure 4 A guide screw structure schematic view provided by the embodiment of the utility model is shown.

[0019] LEGEND:

[0020] 1, lengthened hexagonal wrench; 2, middle seat; 3, supporting ring; 4, shell; 5, tension rod; 6, sliding groove; 7, hexagonal hole; 8, worm; 9, turbine; 10, tension screw rod; 11, bearing one; 12, bearing two; 13, guide screw; 14, locking rod one; 15, locking rod two. DETAILED DESCRIPTION

[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0022] Please refer to Figures 1-4 The present application provides a technical solution:

[0023] A tensioning mechanism suitable for on-site boring, comprising an extended hexagonal wrench 1 and a middle seat 2, the inner wall of the middle seat 2 is provided with a supporting ring 3, the outer wall of the middle seat 2 is integrated with a plurality of annularly distributed telescopic assemblies, the plurality of telescopic assemblies each comprise an outer shell 4, a tensioning rod 5, a worm 8, a turbine 9 and a pushing part for pushing and pulling the tensioning rod 5, the worm 8 and the turbine 9 are rotationally connected with the inner wall of the outer shell 4, and the turbine 9 is meshingly connected with the worm 8, and the longitudinal end of the worm 8 is provided with a hexagonal through hole 7;

[0024] The overall tensioning mechanism is placed in the channel, the extended hexagonal wrench 1 is inserted through the corresponding hexagonal through hole 7, then the worm 8 is driven to rotate by the extended hexagonal wrench 1, the worm 8 drives the turbine 9 to rotate through meshing, the turbine 9 drives the tensioning lead screw 10 to rotate, the tensioning lead screw 10 provides driving force for the tensioning rod 5 through screwing with the inner wall of the tensioning rod 5, the guide screw 13 synchronously slides with the sliding groove 6 to axially constrain the tensioning rod 5, the tensioning rod 5 is horizontally extended until abutting against the inner wall of the channel, and similarly, the driving of the four tensioning rods 5 is realized through the above-mentioned mode, until the tensioning mechanism is stably erected inside the channel, the hexagonal through hole 7 cooperatively provided by the turbine 9 and the worm 8 enables the operator to complete the operation of the tensioning mechanism outside the channel, thereby improving the application range of the tensioning mechanism suitable for on-site boring.

[0025] Specifically, as shown in Figure 2 and Figure 4 , the outer shell 4 comprises two groups of parts, the two groups of parts are fixedly connected through the locking rod two 15, the two groups of parts are fixedly connected with the middle seat 2 through the two groups of locking rod one 14, the outer shell 4 is combined by the two groups of parts through the locking rod two 15, and the two groups of parts are fixed with the middle seat 2 through the two groups of locking rod one 14, so that the plurality of telescopic assemblies can be independently disassembled, and the telescopic assemblies can also be quickly disassembled, thereby ensuring the convenience of subsequent internal part maintenance and replacement of the tensioning mechanism, and improving the convenience of use of the tensioning mechanism suitable for on-site boring.

[0026] Specifically, as shown in Figure 2 and Figure 3As shown, the worm 8 and the turbine 9 are respectively connected with the inner wall of the shell 4 through bearing one 11 and bearing two 12, so as to limit the deviation of the worm 8 and the turbine 9 in other directions while not affecting the rotation of the worm 8 and the turbine 9, the pushing part includes the tensioning screw rod 10 fixedly connected with the outer wall of the turbine 9 and the limiting piece for limiting the axial position of the tensioning rod 5, and the outer wall of the tensioning screw rod 10 is screw-connected with the inner wall of the tensioning rod 5, the limiting piece includes the guide screw 13 fixedly connected with the inner wall of the shell 4, the outer wall of the guide screw 13 is slidingly connected with the outer wall of the tensioning rod 5 through the sliding groove 6, the turbine 9 drives the tensioning screw rod 10 to rotate, the tensioning screw rod 10 provides driving force for the tensioning rod 5 through screwing with the inner wall of the tensioning rod 5, and the guide screw 13 synchronously slides with the sliding groove 6, so as to limit the axial position of the tensioning rod 5, the tensioning rod 5 horizontally extends until abutting against the inner wall of the bore, and the open end of the tensioning rod 5 is provided with rough lines, so as to ensure the stable contact between the tensioning rod 5 and the inner wall of the bore.

[0027] Working principle: the whole tensioning mechanism is arranged in the bore, the lengthened hexagonal wrench 1 is inserted through the corresponding hexagonal hole 7, then the lengthened hexagonal wrench 1 drives the worm 8 to rotate, the worm 8 drives the turbine 9 to rotate through meshing, the turbine 9 drives the tensioning screw rod 10 to rotate, the tensioning screw rod 10 provides driving force for the tensioning rod 5 through screwing with the inner wall of the tensioning rod 5, and the guide screw 13 synchronously slides with the sliding groove 6, so as to limit the axial position of the tensioning rod 5, the tensioning rod 5 horizontally extends until abutting against the inner wall of the bore, and the same way, the above way is used to drive four groups of tensioning rods 5 respectively, until the tensioning mechanism is stably arranged in the bore, the hexagonal hole 7 is arranged through the cooperation of the turbine 9 and the worm 8, so that the operator can also complete the operation of the tensioning mechanism outside the bore, thereby improving the application range of the tensioning mechanism suitable for on-site boring, the shell 4 is combined by two groups of parts through the locking rod two 15, and the two groups of parts are respectively fixed with the middle seat 2 through the two groups of locking rod one 14, so that the multiple telescopic assemblies can be independently disassembled, and the telescopic assembly itself can also be quickly disassembled, thereby ensuring the convenience of subsequent internal part maintenance and replacement of the tensioning mechanism, thereby improving the convenience of use of the tensioning mechanism suitable for on-site boring.

[0028] The above description of the embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A tensioning mechanism suitable for on-site boring, comprising an extended hexagonal wrench (1) and a middle base (2), characterized in that, The inner wall of the middle seat (2) is provided with a support ring (3), the outer wall of the middle seat (2) is integrated with a plurality of groups of annularly distributed telescopic assemblies, each of the plurality of groups of telescopic assemblies comprises a shell (4), a tension rod (5), a worm (8), a turbine (9) and a pushing part for pushing and pulling the tension rod (5), the worm (8) and the turbine (9) are rotationally connected with the inner wall of the shell (4), the turbine (9) is meshingly connected with the worm (8), and a hexagonal through hole (7) is formed in the longitudinal end of the worm (8).

2. A tensioning mechanism suitable for use in situ for boring holes according to claim 1, characterised in that, The shell (4) comprises two groups of parts, the two groups of parts are fixedly connected through a locking rod two (15), and the two groups of parts are fixedly connected with the middle seat (2) through two groups of locking rod one (14).

3. A tensioning mechanism suitable for use in situ for boring holes according to claim 2, characterised in that, The worm (8) and the turbine (9) are rotationally connected with the inner wall of the shell (4) through bearing one (11) and bearing two (12) respectively.

4. A tensioning mechanism suitable for use in situ for boring holes according to claim 3, characterised in that, The pushing part comprises a tension lead screw (10) fixedly connected with the outer wall of the turbine (9) and a limiting piece for limiting the axial position of the tension rod (5), and the outer wall of the tension lead screw (10) is screw-connected with the inner wall of the tension rod (5).

5. A tensioning mechanism suitable for use in situ for boring holes according to claim 4, characterised in that, The limiting piece comprises a guide screw (13) fixedly connected with the inner wall of the shell (4), and the outer wall of the guide screw (13) is slidingly connected with the outer wall of the tension rod (5) through a sliding groove (6).

6. A tensioning mechanism suitable for use in situ for boring holes according to claim 5, characterised in that, The rough texture is arranged on the open end of the tension rod (5).

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