Signal sleeve and tightening tool

Abstract

The present invention provides a signal sleeve and a tightening tool, which relate to the technical field of mechanical accessories. The signal sleeve comprises: a housing; a transmission shaft arranged in the housing; wherein the transmission shaft is connected to a standard sleeve; an electrical signal slip ring sleeved on the transmission shaft; and a signal connector electrically connected to the electrical signal slip ring. The tightening tool used with the signal sleeve comprises: a driving party connected to the driving square hole of the signal sleeve; a preload force measuring instrument for measuring and controlling the bolt preload force; and a tightening tool body connected to the housing of the signal sleeve. The embodiment of the present invention is connected by matching the driving square hole of the signal sleeve with the driving party of the tightening tool, and the preload force measuring instrument is used to detect the size of the preload force in real time during the tightening process. When the internal setting value range of the preload force measuring instrument is reached, the tightening tool is controlled to stop, thereby improving the quality and reliability of the tightening connection.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical accessories, and in particular to a signal sleeve and a tightening tool. Background Art

[0002] Bolt connection is the most important form of structural connection, with the characteristics of repeatable disassembly, good interchangeability and wide application. At present, the installation process of bolt connection is mainly completed by tightening tools. Its forms mainly include manual wrenches and electric tightening guns. Whether the installation is in place is mainly judged by torque or angle. From the design perspective of bolt connection, preload is the direct design indicator for bolt connection. At present, it is not possible to measure the preload on the bolt in real time during the tightening process, resulting in the quality and reliability of the tightening connection cannot be fully guaranteed. Summary of the invention

[0003] The embodiments of the present invention provide a signal sleeve and a tightening tool to solve the problem that the pre-tightening force on the bolt cannot be measured in real time during the tightening process.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a signal sleeve, and the signal sleeve includes:

[0005] shell;

[0006] A transmission shaft is disposed in the housing; wherein the transmission shaft is connected to a standard sleeve;

[0007] An electrical signal slip ring sleeved on the transmission shaft;

[0008] A signal connector electrically connected to the electrical signal slip ring.

[0009] Furthermore, the rotor of the electrical signal slip ring is fixedly connected to the transmission shaft;

[0010] The stator of the electrical signal slip ring is fixedly connected to the signal connector.

[0011] Furthermore, the signal sleeve of the embodiment of the present invention further includes:

[0012] plugging cover;

[0013] The blocking cover is fixed above the signal connector and is fixedly connected to the housing, and the transmission shaft passes through the blocking cover for a preset distance.

[0014] Furthermore, the top of the transmission shaft is provided with a rotatable driving square hole.

[0015] Further, the standard sleeve includes a probe and a magnetic ring;

[0016] The probe is fixed to the transmission shaft via a probe fixing seat;

[0017] The magnetic ring is fixed between the probe and the probe fixing seat.

[0018] Further, a first signal loop is formed from the probe to the center of the signal connector;

[0019] The standard sleeve and the housing of the signal connector form a second signal loop.

[0020] An embodiment of the present invention further provides a tightening tool, comprising:

[0021] A driving square connected to the driving square hole of the signal sleeve;

[0022] Preload force measuring instrument for measuring and controlling bolt preload force;

[0023] A tightening tool body connected to the housing of the signal sleeve.

[0024] Furthermore, the outer shell of the tightening tool body is connected to the outer shell of the signal sleeve and remains relatively still.

[0025] Furthermore, the tightening tool of the embodiment of the present invention further includes:

[0026] Rotating device; the rotating device is connected to the driving side.

[0027] Furthermore, the preload force measuring instrument is integrated inside the tightening tool or connected to the outside of the tightening tool through a signal connector of the signal sleeve.

[0028] The beneficial effects of the present invention are:

[0029] The embodiment of the present invention has wide applicability. No matter it is a manual torque wrench, a fixed wrench, an automatic electric tightening battery gun, or a tightening shaft or a mechanical arm used in a production line, it can be connected to the signal sleeve by connecting the driving party, thereby realizing the pre-tightening force display or control during the tightening process; the signal sleeve of the embodiment of the present invention can tighten bolts of different specifications by replacing the standard sleeve; the embodiment of the present invention can detect the size of the pre-tightening force in real time through a pre-tightening force measuring instrument through the cooperation of the tightening tool and the signal sleeve, thereby avoiding the problem of not being able to measure the pre-tightening force on the bolt in real time during the tightening process, thereby improving the quality and reliability of the tightening connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 A schematic diagram showing the structure of a signal sleeve provided by an embodiment of the present invention;

[0031] Figure 2 A schematic diagram showing the structure of a tightening tool provided in an embodiment of the present invention.

[0032] Description of reference numerals:

[0033] 1-signal connector; 2-plug cover; 3-housing; 4-transmission shaft; 5-electrical signal slip ring; 6-bearing; 7-hole retaining ring; 8-standard sleeve; 9-probe fixing seat; 10-magnetic ring; 11-rotor; 12-stator; 13-probe; 20-signal sleeve; 21-driving side; 22-tightening tool body. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments. In the following description, specific details such as specific configurations and components are provided only to help fully understand the embodiments of the present invention. Therefore, it should be clear to those skilled in the art that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present invention. In addition, for clarity and brevity, the description of known functions and structures is omitted.

[0035] It should be understood that the references to "one embodiment" or "an embodiment" throughout the specification mean that the specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present invention. Therefore, the references to "in one embodiment" or "in an embodiment" appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0036] Aiming at the problem that the pre-tightening force on a bolt cannot be measured in real time during the tightening process, the present invention provides a signal sleeve and a tightening tool.

[0037] like Figure 1 As shown, an embodiment of the present invention provides a signal sleeve, comprising:

[0038] Shell 3;

[0039] A transmission shaft 4 is disposed in the housing 3; wherein the transmission shaft 4 is connected to a standard sleeve 8;

[0040] An electrical signal slip ring 5 sleeved on the transmission shaft 4;

[0041] A signal connector 1 electrically connected to the electrical signal slip ring 5 .

[0042] It should be noted that in the embodiment of the present invention, the signal connector on the relatively stationary housing of the tool is connected through an electrical signal slip ring, and the signal connector includes a signal cable inside, and the signal of the standard sleeve 8 is transmitted to the instrument to be used through the signal connector 1 through the transmission shaft 4. Here, the transmission shaft 4 can be connected to the standard sleeve 8 through a bearing 6; and the bearing 6 can be connected with a hole retaining ring 7. Here, the bearing is added to the transmission shaft in order to improve the auxiliary balancing effect, and the electrical signal slip ring 5 plays the main balancing role. If the standard sleeve 8 is very short, it is not necessary to install the bearing 6 and the hole retaining ring 7. It depends on the actual situation and is not specifically limited here.

[0043] It should also be noted that the outer shell portion from the external shell of the electrical signal slip ring 5 to the external shell portion of the bearing 6 can be manufactured according to the outer diameter or thread size of the electrical signal slip ring 5 or the bearing 6, and no specific restrictions are made here. Such manufacturing can ensure that the signal sleeve is complete and beautiful, making the signal sleeve structure more compact.

[0044] Optionally, the rotor 11 of the electrical signal slip ring 5 is fixedly connected to the transmission shaft 4;

[0045] The stator 12 of the electrical signal slip ring 5 is fixedly connected to the signal connector 1 .

[0046] It should be noted that the electrical signal slip ring 5 has a small rotational resistance and stable signal transmission. The rotor 11 of the electrical signal slip ring 5 can meet the high rotation speed requirement of the tightening tool, which can reach 1000rpm. In the embodiment of the present invention, the electrical signal slip ring 5 is used to transmit the signal from the rotating sleeve to the end of the stator 12, thereby avoiding the entanglement of the cable during the tightening process.

[0047] Optionally, the signal sleeve of the embodiment of the present invention further includes:

[0048] Plug cover 2;

[0049] The blocking cover 2 is fixed above the signal connector 1 and fixedly connected to the housing 3 , and the transmission shaft 4 passes through the blocking cover 2 by a preset distance.

[0050] It should be noted that the plugging cover 2 is added above the inside of the signal sleeve, and the plugging cover 2 hides the internal cables, protects the internal components of the sleeve from the environment, and improves the environmental adaptability of the sleeve; the transmission shaft 4 passes through the plugging cover 2 for a preset distance, and the preset distance can be designed according to actual conditions and is not specifically limited here.

[0051] Specifically, the top of the transmission shaft 4 has a rotatable driving square hole, which is connected to a tightening tool, and the operation of the tool drives the transmission shaft 4 to rotate, and transmits the torque to the standard sleeve 8 below the transmission shaft 4.

[0052] Optionally, the standard sleeve 8 includes a probe 13 and a magnetic ring 10;

[0053] The probe 13 is fixed to the transmission shaft 4 via a probe fixing seat 9;

[0054] The magnetic ring 10 is fixed between the probe 13 and the probe fixing seat 9 .

[0055] It should be noted that the magnetic ring 10 can keep the sleeve in reliable contact with the bolt during the bolt tightening process, ensuring the stability of the contact between the sleeve and the bolt head when tightening the screw; the probe 13 is fixed to the transmission shaft 4 by the probe fixing seat 9, and the terminal wiring on the probe fixing seat 9 is connected to the rotor 11 of the electrical signal slip ring 5 through the inner hole of the transmission shaft 4, and the stator 12 of the electrical signal slip ring 5 is connected to the signal connector on the relatively stationary housing 3. Among them, the probe fixing seat 9 and the probe 13 are clearance fit, which is convenient for replacement when the probe is worn.

[0056] Optionally, the probe 13 to the center of the signal connector 1 forms a first signal loop, and the standard sleeve 8 to the shell of the signal connector 1 forms a second signal loop. Here, the probe 13 itself can also have multiple loops, and different types of probes can be selected according to actual conditions, and there is no specific limitation here.

[0057] like Figure 2 As shown, one embodiment of the present invention provides a tightening tool, comprising:

[0058] A driving square 21 connected to the driving square hole of the signal sleeve;

[0059] Preload force measuring instrument for measuring and controlling bolt preload force;

[0060] A tightening tool body connected to the housing of the signal sleeve.

[0061] It should be noted that the tightening tool of the embodiment of the present invention can measure the bolt preload, and the tightening tool can control the stop and start of the signal sleeve that is connected to the driving party 21. Specifically, the tightening tool used with the signal sleeve is connected to the signal sleeve through the driving party 21, and the preload measuring instrument is connected to the signal sleeve through the signal connector 1. When performing a tightening operation, the tightening tool can measure the bolt preload through the preload measuring instrument, and the preload measuring instrument compares the measured preload result with the preset value inside the preload measuring instrument. When the preset value range is reached, the preload measuring instrument sends a signal to the tightening tool and controls the tightening tool to stop, so as to achieve a tightening operation with preload control.

[0062] Optionally, the preload force measuring instrument is integrated inside the tightening tool or connected to the outside of the tightening tool via a signal connector of the signal sleeve.

[0063] It should be noted that the preload force measuring instrument can be externally or internally connected according to the actual situation, and there is no specific restriction here; the preload force measuring instrument is an ultrasonic bolt preload force measuring instrument. The embodiment of the present invention integrates the ultrasonic bolt preload force measuring instrument with the tightening tool, so that the tightening operation can be performed while measuring the change of the corresponding preload force. In the embodiment of the present invention, the driving square 21 of the tightening tool is inserted into the driving square hole of the transmission shaft 4 of the signal sleeve. The transmission shaft 4 rotates under the action of the tightening tool to transmit the torque to the standard sleeve 8 below.

[0064] Specifically, the outer shell of the tightening tool body is connected to the outer shell of the signal sleeve and remains relatively still.

[0065] Optionally, the tightening tool according to the embodiment of the present invention further includes:

[0066] Rotating device; the rotating device is connected to the driving side 21.

[0067] It should be noted that the driving side 21 is driven by the rotation of the rotating device, and the driving side 21 is fixedly connected to the driving square hole of the signal sleeve, thereby driving the signal sleeve to rotate, and the signal sleeve transmits the preload force to the preload force measuring instrument. Here, if the tightening tool is an electric tightening tool, the tightening tool may also include a switch; the rotating device and the switch are electrically connected, and the switch controls the start and stop of the rotating device; of course, the tightening tool may also be a manual tightening tool, which is not specifically limited here.

[0068] To sum up, the signal sleeve in the embodiment of the present invention has a wide range of applicability. No matter it is a manual torque wrench, a fixed wrench, an automatic electric tightening battery gun, or a tightening shaft or a robotic arm used in a production line, it can be connected to the signal sleeve by connecting the driving party, thereby realizing the pre-tightening force display or control during the tightening process; the signal sleeve in the embodiment of the present invention can tighten bolts of different specifications by replacing the standard sleeve; the embodiment of the present invention can detect the size of the pre-tightening force in real time through the pre-tightening force measuring instrument of the tightening tool through the coordinated use of the tightening tool and the signal sleeve, thereby avoiding the problem of not being able to measure the pre-tightening force on the bolt in real time during the tightening process, thereby improving the quality and reliability of the tightening connection.

[0069] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary personnel in this technical field, several improvements and modifications can be made without departing from the principles described in the present invention. These improvements and modifications are also within the scope of protection of the present invention.

Claims

1. A signal sleeve, characterized in that: include: Shell (3); A transmission shaft (4) is disposed in the housing (3); wherein the transmission shaft (4) is connected to a standard sleeve (8); An electrical signal slip ring (5) sleeved on the transmission shaft (4); A signal connector (1) electrically connected to the electrical signal slip ring (5); Wherein, the rotor (11) of the electrical signal slip ring (5) is fixedly connected to the transmission shaft (4); the stator (12) of the electrical signal slip ring (5) is fixedly connected to the signal connector (1); The standard sleeve (8) comprises a probe (13) and a magnetic ring (10); the probe (13) is fixed to the transmission shaft (4) via a probe fixing seat (9); the magnetic ring (10) is fixed between the probe (13) and the probe fixing seat (9); the probe fixing seat (9) and the probe (13) are clearance-fitted; The terminal connection on the probe fixing seat (9) is connected to the rotor (11) of the electrical signal slip ring (5) through the inner hole of the transmission shaft (4), and the stator (12) of the electrical signal slip ring (5) is connected to the signal connector (1) on the relatively stationary housing (3).

2. The signal sleeve according to claim 1, characterized in that: Also includes: Plug cover (2); The blocking cover (2) is fixed above the signal connector (1) and is fixedly connected to the housing (3), and the transmission shaft (4) passes through the blocking cover (2) by a preset distance.

3. The signal sleeve according to claim 2, characterized in that: The top of the transmission shaft (4) is provided with a rotatable driving square hole.

4. The signal sleeve according to claim 1, characterized in that: The probe (13) forms a first signal loop to the center of the signal connector (1); The standard sleeve (8) and the housing of the signal connector (1) form a second signal loop.

5. A tightening tool, characterized in that: include: A driving square (21) connected to the driving square hole of claim 3; Preload force measuring instrument for measuring and controlling bolt preload force; A tightening tool body connected to the housing of the signal sleeve.

6. The tightening tool according to claim 5, characterized in that: The outer shell of the tightening tool body (22) is connected to the outer shell of the signal sleeve and remains relatively still.

7. The tightening tool according to claim 5, characterized in that: Also includes: Rotating device; The rotating device is connected to the driving side (21).

8. The tightening tool according to claim 5, characterized in that: The preload force measuring device is integrated into the tightening tool or connected to the outside of the tightening tool via a signal connector of the signal sleeve.

Images