Tension releasing machine suitable for precast concrete pile / rod production

Abstract

The invention discloses a tension releasing machine suitable for precast concrete pile / rod production. The tension releasing machine comprises a rack, a tension releasing mechanism and a linear coordinate mechanical structure. The rack is provided with a releasing mechanism movement space; the releasing mechanism is installed on the machine frame through the linear coordinate mechanical structure, the releasing mechanism is arranged in the releasing mechanism movement space, and the linear coordinate mechanical structure can drive the releasing mechanism to move in the vertical plane of the releasing mechanism movement space and be located at any position. According to the tension releasing machine suitable for precast concrete pile / rod production, the tension releasing mechanism can be positioned at any position in the vertical plane, so that the tension releasing machine can release the locking nut conveniently, and automation of the tension releasing machine on the locking nut is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of practical precast concrete pile production equipment, in particular to a tensioning machine suitable for use in the production of precast concrete piles / rods. Background Art

[0002] In order to enable the precast concrete pile / pole to withstand a higher load during use, it is necessary to stretch the steel cage in the concrete pile / pole mold through a tensioning machine and lock it through a locking nut, so that the steel cage remains in a stretched state during subsequent primary steam curing, demoulding and advanced steam curing steps, thereby improving the bearing capacity of the precast concrete pile / pole. After the precast concrete pile / pole is formed, the locking nut on the tensioning rod needs to be loosened. In order to reduce the workload of the operator, the locking nut is generally loosened by a tensioning machine. However, the spatial position adjustment of the existing tensioning machine is inconvenient, which makes it inconvenient to engage the tensioning machine with the locking nut, and thus it is impossible to realize the automation of the tensioning machine to loosen the locking nut. Summary of the invention

[0003] The present invention proposes a tensioning machine suitable for use in the production of precast concrete piles / poles, which solves the problem that the existing tensioning machine is inconvenient to adjust the spatial position and thus cannot automatically loosen the locking nut of the tensioning machine.

[0004] The technical means adopted by the present invention are as follows:

[0005] A tensioning machine suitable for use in the production of precast concrete piles / rods, comprising a frame, a tensioning mechanism and a linear coordinate mechanical structure;

[0006] The frame is provided with a movement space for the sheet placing mechanism;

[0007] The stretching mechanism is installed on the frame through the linear coordinate mechanical structure, and the stretching mechanism is placed in the movement space of the stretching mechanism. The linear coordinate mechanical structure can drive the stretching mechanism to move in the vertical plane of the movement space of the stretching mechanism and position it at any position.

[0008] Further, the linear coordinate mechanical structure includes two sets of chain pulling and releasing devices arranged opposite to each other;

[0009] Each group of the chain pulling and releasing devices comprises a sprocket drive mechanism, at least two sprockets and at least two chains;

[0010] One end of the chain is installed on the frame, and the other end is installed on the tensioning mechanism. Multiple groups of chains suspend the tensioning mechanism in the movement space of the tensioning mechanism. The sprocket driving mechanism is installed on the frame. The sprocket driving mechanism can drive the sprocket to rotate. The sprocket drives the chain to achieve pulling and releasing of the chain. The change of the chain pulling and releasing length of the two groups of chain pulling and releasing devices enables the tensioning mechanism to move in the vertical plane of the movement space of the tensioning mechanism and be positioned at any position.

[0011] Furthermore, the chain drive mechanism is a motor reducer with dual output shafts.

[0012] Furthermore, the tensioning mechanism comprises a power source, an outer sleeve, a transmission shaft and a nut sleeve assembly;

[0013] The outer sleeve is connected to the linear coordinate mechanical structure. The transmission shaft is placed in the outer sleeve and one end of the transmission shaft is connected to the power source, and the other end is connected to the nut sleeve assembly.

[0014] Furthermore, the power source is a hydraulic motor.

[0015] Furthermore, the transmission shaft is a hollow sleeve structure, and a spring is sleeved outside the transmission shaft;

[0016] The nut sleeve assembly comprises a nut sleeve and a claw sleeve;

[0017] The nut sleeve is sleeved on one end of the transmission shaft and abuts against one end of the spring. When the nut sleeve is subjected to an axial thrust along the transmission shaft,

[0018] The nut sleeve can move along the axial direction of the transmission shaft at the end of the transmission shaft to compress the spring, and reset under the action of the restoring force of the spring. The claw sleeve is installed on the outer sleeve.

[0019] Furthermore, it also includes a guide rail and a frame horizontal driving mechanism;

[0020] The frame is installed on the guide rail through rollers, and the frame horizontal driving mechanism is installed on the guide rail to drive the frame to move horizontally on the guide rail.

[0021] Furthermore, it also includes a linear coordinate mechanical structure mounting frame and a mounting frame driving mechanism, the linear coordinate mechanical structure mounting frame is installed on the frame through rollers, the mounting frame driving mechanism is arranged on the frame to drive the linear coordinate mechanical structure mounting frame to move horizontally, and the linear coordinate mechanical structure is installed on the linear coordinate mechanical structure mounting frame.

[0022] Furthermore, the mounting frame driving mechanism and the frame horizontal driving mechanism are hydraulic cylinders or pneumatic cylinders.

[0023] Furthermore, it also includes a detection mechanism arranged on the frame for detecting the position of the tensioning screw.

[0024] Compared with the prior art, the tensioning machine disclosed in the present invention and suitable for use in the production of precast concrete piles / poles has the following beneficial effects: due to the provision of a linear coordinate mechanical structure, the linear coordinate mechanical structure suspends the tensioning mechanism on the frame, and the linear coordinate mechanical structure can drive the tensioning mechanism to move in the vertical plane of the tensioning mechanism's movement space and be positioned at any position, thereby facilitating adjustment of the position of the tensioning mechanism to achieve position correspondence between the tensioning mechanism and the locking nut, thereby realizing the automation of the loosening of the locking nut by the tensioning machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is an axial view of a tensioning machine suitable for use in the production of precast concrete piles / poles disclosed in the present invention;

[0026] Figure 2 A side view of a tensioning machine suitable for use in the production of precast concrete piles / poles disclosed in the present invention;

[0027] Figure 3 It is a front view of a tensioning machine suitable for use in the production of precast concrete piles / poles disclosed in the present invention;

[0028] Figure 4 for Figure 3 Sectional view at AA;

[0029] Figure 5 for Figure 4 Sectional view at DD in the middle;

[0030] Figure 6 for Figure 5 Sectional view at FF;

[0031] Figure 7 for Figure 6 A partial enlarged view of point E in the middle;

[0032] Figure 8 for Figure 4 A partial enlarged view of point B in the middle;

[0033] Fig. 9 for Figure 1 A partial enlarged view of point C in the middle;

[0034] Fig.10 This is a schematic diagram of positioning the tensioning mechanism to the first position by the linear coordinate mechanical structure in the present application, in which the lengths of the two chains are the same, so that the tensioning mechanism is positioned at the middle position;

[0035] Fig.11This is a schematic diagram of positioning the tensioning mechanism to the second position by the linear coordinate mechanical structure in the present application. In the figure, the lengths of the two groups of chains are different, so that the tensioning mechanism is positioned at the right position.

[0036] In the figure: 1. frame, 10. movement space of the releasing mechanism, 11. guide rail, 12. frame vertical screen driving mechanism, 13. roller, 14. fixing ear, 15. frame base, 16. frame support column, 17. frame upper seat, 2. releasing mechanism, 20. power source, 21. outer sleeve, 22. transmission shaft, 23. nut sleeve assembly, 230. nut sleeve, 231. claw sleeve, 232. limit pin, 24. spring, 25. linear coordinate mechanical structure mounting frame, 26. mounting frame driving mechanism, 3. linear coordinate mechanical structure, 30. chain pulling and releasing device, 300. sprocket driving mechanism, 301. sprocket, 302. chain, 303. arc baffle. DETAILED DESCRIPTION

[0037] like Figure 1 , Figure 2 and Figure 3 The figure shows a tensioning machine disclosed in the present invention and suitable for use in the production of precast concrete piles / rods, comprising a frame 1, a tensioning mechanism 2 and a linear coordinate mechanical structure 3;

[0038] The frame 1 is provided with a movement space 10 for the sheet placing mechanism;

[0039] The stretching mechanism 2 is installed on the frame 1 through the linear coordinate mechanical structure 3, and the stretching mechanism 2 is placed in the stretching mechanism movement space 10. The linear coordinate mechanical structure 3 can drive the stretching mechanism 2 to move in the vertical plane of the stretching mechanism movement space 10 and position it at any position.

[0040] Specifically, in this embodiment, Figure 1 As shown, the frame 1 includes a frame base 15, a frame support column 16 and a frame upper seat 17; four frame support columns 16 are provided at the four corners of the frame base 15, and the frame upper seat 17 is fixed on the frame support columns 16, and a movement space 10 for the tensioning mechanism is formed between the frame base 15 and the frame upper seat 17.

[0041] like Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the linear coordinate mechanical structure 3 includes two sets of chain pulling and releasing devices 30 arranged opposite to each other;

[0042] Each group of the chain pulling and releasing devices 30 includes a sprocket drive mechanism 300, at least two sprockets 301 and at least two chains 302;

[0043] One end of the chain 302 is fixedly connected to the upper seat 17 of the frame, and the other end is fixedly connected to the tensioning mechanism 2. Multiple chains 302 suspend the tensioning mechanism 2 in the movement space 10 of the tensioning mechanism. The sprocket drive mechanism 300 is installed on the frame 1. The two groups of chain drive mechanisms and the tensioning mechanism are arranged in a triangle and are connected by two groups of chains (each group of chains includes at least two chains). The sprocket drive mechanism 300 can drive the sprocket 301 to rotate, and the sprocket 301 drives the chain 302 to achieve pulling and releasing of the chain 302. The change in the pulling and releasing length of the chain 302 of the two groups of chain pulling and releasing devices 30 enables the tensioning mechanism 2 to move in the vertical plane of the movement space 10 of the tensioning mechanism and be positioned at any position, that is, as shown in FIG. Fig.10 and Fig.11 As shown, the two sets of sprocket drive mechanisms 300 and the tensioning mechanism 2 form a triangular structure in the vertical plane, and the tensioning mechanism is connected to the sprocket drive mechanism through the two sets of sprockets. When the pulling and releasing lengths of the two sets of sprockets change, G in the figure represents the chain, H represents the tensioning mechanism, and the horizontal and vertical distances of the tensioning mechanism 2 relative to the two sets of sprocket drive mechanisms change, as shown in FIG. Fig.10 As shown in the figure, the lengths of the two chains are the same. At this time, the tensioning mechanism is in the middle of the two chain tensioning devices, and when the length of the chain changes, the tensioning mechanism can be positioned at different heights in the middle (as shown by the dotted line in the figure). Fig.11 As shown, the lengths of the two groups of chains (chains on the left and right sides) are different. At this time, the tensioning mechanism will deviate from the middle position of the two groups of chain pulling and releasing devices, and according to the different pulling and releasing lengths of the two groups of chains, the tensioning mechanism can move to any position, and thus the present application realizes that the tensioning mechanism moves in the vertical plane of the tensioning mechanism movement space 10, and can be positioned at any position. Since the present invention is provided with a linear coordinate mechanical structure 3, the linear coordinate mechanical structure 3 can drive the tensioning mechanism 2 to move in the vertical plane of the tensioning mechanism movement space 10, and can be positioned at any position, and thus the tensioning machine can be used to automatically adjust the tensioning mechanism to a position corresponding to the position of the tensioning screw in the tensioning mechanism movement space, and thus realize the loosening of the locking nut on the tensioning rod, and realize the automation of the loosening of the locking nut. At the same time, the tensioning machine disclosed in the present application has the advantages of simple structure and convenient control.

[0044] Furthermore, if Figure 5 and Figure 7As shown, the chain drive mechanism 300 is a motor reducer with dual output shafts, and a sprocket is installed on each of the two output shafts of the motor reducer. Each group of the chain pulling and releasing device 30 includes two chains 302, and the two chains 302 are spaced a certain distance along the axis of the tensioning mechanism 2 to ensure that the tensioning mechanism is in a horizontal state, which is convenient for loosening the locking nut. Furthermore, in order to ensure the transmission reliability between the sprocket and the chain, an arc-shaped baffle 303 is also provided on the outside of the sprocket, and the arc-shaped baffle is arranged on the outside of the sprocket and corresponds to the position where the chain and the sprocket are engaged.

[0045] In this embodiment, if Figure 4 , Figure 8 and Fig. 9 As shown, the tensioning mechanism 2 includes a power source 20, an outer sleeve 21, a transmission shaft 22 and a nut sleeve assembly 23;

[0046] The outer sleeve 21 is connected to the linear coordinate mechanical structure 3, the transmission shaft 22 is placed in the outer sleeve 21 and one end is connected to the power source 20, and the other end is connected to the nut sleeve assembly 23. Specifically, the power source 20 is fixed to one end of the outer sleeve 21, the output shaft of the power source 20 is connected to the transmission shaft 22, the transmission shaft 22 is placed in the outer sleeve 21, and the other end of the transmission shaft 22 is installed with the nut sleeve assembly 23. The power source 20 drives the nut sleeve assembly 23 to rotate through the transmission shaft 22, and the nut sleeve assembly 23 includes a nut sleeve 230 that can be engaged with the locking nut, thereby realizing the loosening of the locking nut.

[0047] Furthermore, the power source 20 is a hydraulic motor, which has the advantages of fast rotation speed, high power, low power consumption, etc., thereby being able to achieve rapid loosening of the nut sleeve with low energy consumption.

[0048] Furthermore, if Figure 4 As shown, it also includes a guide rail 11 and a frame horizontal driving mechanism 12;

[0049] The frame 1 is mounted on the guide rail 11 through rollers 13, and the frame horizontal driving mechanism 12 is mounted on the guide rail 11 to drive the frame 1 to move horizontally on the guide rail 11. In this embodiment, the frame base 15 is a box structure with an opening at the lower end, and rollers 13 are mounted on the frame base 15. The frame is placed on the guide rail through the rollers 13. A fixing ear 14 is provided on the guide rail 11. The frame base 15 is provided with a frame horizontal driving mechanism 12. The frame horizontal driving mechanism 12 is a cylinder or a hydraulic cylinder, one end of which is connected to the fixing ear 14, and the other end is connected to the frame base 15. The cylinder or hydraulic cylinder can drive the frame 1 to move horizontally on the guide rail 11, so as to push the tensioning machine to the side close to the locking nut. In this embodiment, the frame horizontal driving mechanism 12 and the fixing ear 14 are placed in the frame base.

[0050] Furthermore, if Figure 5 and Figure 7 As shown, it also includes a linear coordinate mechanical structure mounting frame 25 and a mounting frame driving mechanism 26. The linear coordinate mechanical structure mounting frame 25 is installed on the frame 1 through rollers 13. The mounting frame driving mechanism 26 is arranged on the frame 1 to drive the linear coordinate mechanical structure mounting frame 25 to move horizontally. The linear coordinate mechanical structure 3 is installed on the linear coordinate mechanical structure mounting frame 25. Specifically, the frame upper seat 17 is a box body structure with an opening on the lower side, and a linear coordinate mechanical structure mounting frame 25 is provided in the box body. Rollers 13 are provided on both sides of the linear coordinate mechanical structure mounting frame 25, and a slide groove structure is formed on both sides of the box body. The rollers are arranged in the slide groove. The linear coordinate mechanical structure mounting frame 25 can move horizontally in the frame upper seat through the rollers 13. The chain pulling and releasing device is installed on the linear coordinate mechanical structure mounting frame. A mounting frame driving mechanism 26 is also provided in the frame upper seat. In this embodiment, the mounting frame driving mechanism is a hydraulic cylinder or a pneumatic cylinder, one end of the hydraulic cylinder or the cylinder is connected to the frame upper seat, and the other end is connected to the linear coordinate mechanical structure mounting frame. The linear coordinate mechanical structure mounting frame can be driven to move horizontally relative to the frame upper seat by the hydraulic cylinder or the cylinder, thereby realizing the horizontal movement of the tensioning mechanism. By installing the chain pulling and releasing device on the linear coordinate mechanical structure mounting frame, and the mounting frame driving mechanism can drive the linear coordinate mechanical structure mounting frame to move horizontally relative to the frame upper seat, it can be achieved that when the tensioning machine disclosed in the present invention is a certain distance away from the tensioning machine, the frame position can be kept fixed, and the tensioning mechanism moves horizontally under the drive of the mounting frame driving mechanism, thereby achieving rapid loosening of the locking nuts on different tensioning rods.

[0051] Furthermore, the transmission shaft 22 is a hollow sleeve structure, and a spring 24 is sleeved outside the transmission shaft 21;

[0052] The nut sleeve assembly 23 includes a nut sleeve 230 and a claw sleeve 231;

[0053] The nut sleeve 230 is sleeved on one end of the transmission shaft 22 and abuts against one end of the spring 24. When the nut sleeve 230 is subjected to an axial thrust along the transmission shaft 22, the nut sleeve 230 can move axially at the end of the transmission shaft 22 along the transmission shaft 22 to compress the spring 24, and reset under the action of the restoring force of the spring 24. The claw sleeve 231 is installed on the outer sleeve 21. Specifically, the nut sleeve 230 is sleeved on the end of the transmission shaft. A limit pin 232 is provided at the end of the transmission shaft. The nut sleeve can move on the transmission shaft and its moving distance is limited by the limit pin. The transmission shaft is a hollow sleeve structure for accommodating the end of the tensioning rod. At the same time, during the engagement between the tensioning mechanism and the locking nut, the hollow sleeve of the transmission shaft can guide the tensioning rod, thereby facilitating the engagement between the nut sleeve and the locking nut. Furthermore, since a spring is sleeved on the transmission shaft and the spring abuts against the nut sleeve, when the tensioning mechanism approaches and contacts the locking nut, the nut sleeve can retreat backwards during the contact (collision) process with the locking nut, and then reset and engage with the locking nut under the push of the spring, thereby reducing the contact force between the nut sleeve and the locking nut during the contact process, thereby ensuring the service life of the equipment. At the same time, when the locking nut is twisted by the nut sleeve, the nut sleeve can move on the transmission shaft to achieve the retreat of the nut sleeve.

[0054] Furthermore, it also includes a detection mechanism arranged on the frame 1 for detecting the position of the tensioning screw. The detection mechanism can be used to detect the position of the tensioning rod. In this embodiment, the detection device is arranged on the lower side of the frame upper seat, so that the control system can automatically adjust the position of the tensioning mechanism through the linear coordinate machine structure according to the detected position information, so that the tensioning mechanism corresponds to the position of the tensioning screw, thereby achieving the loosening of the locking nut.

[0055] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A tensioning machine suitable for use in the production of precast concrete piles / rods, characterized in that: It comprises a frame (1), a sheet placing mechanism (2) and a linear coordinate mechanical structure (3); The frame (1) is provided with a movement space (10) for the sheet placing mechanism; The stretching mechanism (2) is installed on the frame (1) via the linear coordinate mechanical structure (3), and the stretching mechanism (2) is placed in the stretching mechanism movement space (10). The linear coordinate mechanical structure (3) can drive the stretching mechanism (2) to move in a vertical plane of the stretching mechanism movement space (10) and position it at any position.

2. The tensioning machine suitable for use in the production of precast concrete piles / rods according to claim 1, characterized in that: The linear coordinate mechanical structure (3) comprises two sets of chain pulling and releasing devices (30) arranged opposite to each other; Each group of the chain pulling and releasing devices (30) comprises a sprocket drive mechanism (300), at least two sprockets (301) and at least two chains (302); One end of the chain (302) is mounted on the frame (1), and the other end is mounted on the tensioning mechanism (2). Multiple groups of the chains (302) suspend the tensioning mechanism (2) in the movement space (10) of the tensioning mechanism. The sprocket drive mechanism (300) is mounted on the frame (1). The sprocket drive mechanism (300) can drive the sprocket (301) to rotate. The sprocket (301) drives the chain (302) to move to achieve pulling and releasing of the chain (302). The change in the pulling and releasing length of the chain (302) of the two groups of the chain pulling and releasing devices (30) enables the tensioning mechanism (2) to move in the vertical plane of the movement space (10) of the tensioning mechanism and be positioned at any position.

3. The tensioning machine for use in the production of precast concrete piles / rods according to claim 2, characterized in that: The chain drive mechanism (300) is a motor reducer with dual output shafts.

4. The tensioning machine suitable for use in the production of precast concrete piles / rods according to any one of claims 1 to 3, characterized in that: The tensioning mechanism (2) comprises a power source (20), an outer sleeve (21), a transmission shaft (22) and a nut sleeve assembly (23); The outer sleeve (21) is connected to the linear coordinate mechanical structure (3); the transmission shaft (22) is placed in the outer sleeve (21) and one end of the transmission shaft is connected to the power source (20) and the other end is connected to the nut sleeve assembly (23).

5. The tensioning machine for use in the production of precast concrete piles / rods according to claim 4, characterized in that: The power source (20) is a hydraulic motor.

6. The tensioning machine for use in the production of precast concrete piles / rods according to claim 4, characterized in that: The transmission shaft (22) is a hollow sleeve structure, and a spring (24) is sleeved outside the transmission shaft (22); The nut sleeve assembly (23) comprises a nut sleeve (230) and a claw sleeve (231); The nut sleeve (230) is sleeved on one end of the transmission shaft (22) and abuts against one end of the spring (24). When the nut sleeve (230) is subjected to an axial thrust along the transmission shaft (22), the nut sleeve (230) can move along the axial direction of the transmission shaft (22) at the end of the transmission shaft (22) and compress the spring (24), and reset under the action of the restoring force of the spring (24). The claw sleeve (231) is mounted on the outer sleeve (21).

7. The tensioning machine suitable for use in the production of precast concrete piles / rods according to any one of claims 1 to 3, characterized in that: It also includes a guide rail (11) and a frame horizontal driving mechanism (12); The frame (1) is mounted on the guide rail (11) via rollers (13), and the frame horizontal driving mechanism (12) is mounted on the guide rail (11) for driving the frame (1) to move horizontally on the guide rail (11).

8. The tensioning machine for use in the production of precast concrete piles / rods according to claim 7, characterized in that: It also comprises a linear coordinate mechanical structure mounting frame (25) and a mounting frame driving mechanism (26), wherein the linear coordinate mechanical structure mounting frame (25) is mounted on the frame (1) via a roller (13), and the mounting frame driving mechanism (26) is arranged on the frame (1) and is used to drive the linear coordinate mechanical structure mounting frame (25) to move horizontally, and the linear coordinate mechanical structure (3) is mounted on the linear coordinate mechanical structure mounting frame (25).

9. The tensioning machine for use in the production of precast concrete piles / rods according to claim 8, characterized in that: The mounting frame driving mechanism (26) and the frame horizontal driving mechanism (12) are hydraulic cylinders or pneumatic cylinders.

10. The tensioning machine for use in the production of precast concrete piles / rods according to claim 1, characterized in that: It also comprises a detection mechanism arranged on the frame (1) for detecting the position of the tensioning screw.

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