Thrust measuring device

Abstract

The invention discloses a thrust measuring device which comprises a shell, a measuring mechanism and a push rod mechanism, wherein the measuring mechanism and the push rod mechanism are arranged in the shell; the measuring mechanism comprises a first support and a thrust meter assembled on the first support, and a buffer structure is arranged between the thrust meter and the first support; the push rod mechanism is used for penetrating through the first support and being connected with the thrust meter so that the thrust meter can measure thrust acting on the push rod mechanism. According to the thrust measuring device, the buffering structure is arranged between the first support and the thrust meter, so that the thrust meter in the measuring mechanism can be protected and fixed, buffering can be formed between the thrust meter and the first support when the thrust measuring device is jolted and shaken, collision or displacement between the thrust meter and the first support is prevented, and the thrust measuring device is more reliable. And the thrust measurement precision of the thrust meter is influenced.

Description

Technical Field

[0001] The present invention relates to the technical field of thrust measurement, and in particular to a thrust measurement device. Background Art

[0002] In existing thrust measurement devices, thrust measurement is usually performed by using a push rod to trigger a thrust meter installed inside. The thrust meter installed inside the device is equipped with a high-sensitivity pressure sensor, which can accurately sense the thrust transmitted by the push rod.

[0003] During daily use, the thrust gauge will inevitably be subjected to external bumps and shakes. The thrust gauge installed inside is prone to displacement under the influence of bumps and collisions, resulting in changes in the movement stroke between the push rod and the thrust gauge, which will affect the measurement accuracy of the thrust measurement device and cause measurement errors. Summary of the invention

[0004] The embodiment of the present invention provides a thrust measurement device to solve the problem that the thrust meter is easily affected by external turbulence and generates measurement errors.

[0005] An embodiment of the present invention provides a thrust measurement device, comprising a housing, a measurement mechanism and a push rod mechanism arranged in the housing; The measuring mechanism comprises a first bracket and a thrust meter mounted on the first bracket, and a buffer structure is provided between the thrust meter and the first bracket; The push rod mechanism is used to pass through the first bracket and connect with the thrust meter, so that the thrust meter measures the thrust acting on the push rod mechanism.

[0006] Preferably, a first accommodating cavity is provided in the first bracket, and the thrust meter is assembled in the first accommodating cavity; The buffer structure includes a first buffer component and a second buffer component; The first buffer assembly is arranged between the thrust meter and the first bracket along the axial direction of the first accommodating cavity; The second buffer assembly is disposed between the thrust meter and the first bracket along a radial direction of the first accommodating cavity.

[0007] Preferably, the first buffer assembly includes at least one elastic abutment member; The first end of the elastic abutment member along the axial direction of the first accommodating cavity is connected to the first bracket, and the second end of the elastic abutment member along the axial direction of the first accommodating cavity abuts against the thrust meter.

[0008] Preferably, the second buffer component includes at least one flexible buffer sheet; Each of the flexible buffer sheets is connected to the first bracket along a first side edge in the radial direction of the first accommodating cavity, and each of the flexible buffer sheets is connected to the thrust meter along a second side edge in the radial direction of the first accommodating cavity.

[0009] Preferably, a first through hole penetrating and connecting the first accommodating cavity is formed on the first bracket; The sensing end of the thrust meter is arranged opposite to the first through hole; The sensing end of the thrust meter is spaced apart from the first bracket; The push rod mechanism is used to pass through the first through hole and connect with the thrust meter.

[0010] Preferably, the push rod mechanism comprises a second bracket and a push rod; The second bracket is connected to the first bracket; The push rod is inserted into the second bracket, the first end of the push rod is used to pass through the first bracket and abut against the thrust meter, and the second end of the push rod protrudes from the second bracket.

[0011] Preferably, the second bracket is provided with a receiving channel for receiving the push rod, and a first limiting groove widened from the receiving channel along the radial direction of the push rod; The push rod mechanism also includes a return spring sleeved on the push rod; The push rod is provided with an abutment structure, and the abutment structure and the return spring are both arranged in the first limiting groove. The side of the abutment structure close to the measuring mechanism abuts against the return spring, and the side of the abutment structure close to the measuring mechanism abuts against the second bracket.

[0012] Preferably, the second bracket is provided with a receiving channel for accommodating the push rod, and a second limiting groove widened from the receiving channel along the radial direction of the push rod; The push rod mechanism further comprises a limiting sleeve sleeved on the push rod, and the limiting sleeve is arranged in the second limiting groove.

[0013] Preferably, the thrust measurement device further comprises a circuit board; The circuit board is electrically connected to the thrust meter; The circuit board is assembled on the first bracket, and a first buffering and shock-proof structure is arranged between the circuit board and the first bracket.

[0014] Preferably, a control chip is provided on the circuit board; The control chip is electrically connected to the thrust meter and is used to receive the thrust measurement signal output by the thrust meter; The control chip is also used to communicate with a display screen and output the thrust measurement signal to the display screen so that the display screen displays the thrust.

[0015] Preferably, the thrust measurement device further comprises a battery arranged on the first bracket, and the circuit board is further provided with a battery protection circuit and a power measurement circuit; The battery protection circuit is electrically connected to the battery, and is used to detect the power supply voltage and the power supply current, and open the negative electrode of the battery when the power supply voltage or the power supply current is abnormal; One end of the power measurement circuit is connected to the battery, and the other end is connected to the control chip, and is used to output a power measurement signal to the control chip; The control chip is used to output the power detection signal to the display screen so that the display screen can display the power.

[0016] Preferably, the thrust measurement device further comprises a second buffering and shockproof structure; The second buffering and shock-proofing structure is assembled on an end of the first bracket away from the push rod mechanism and abuts against the housing.

[0017] The thrust measuring device provided in the embodiment of the present invention can protect and fix the thrust meter in the measuring mechanism by arranging a buffer structure between the first bracket and the thrust meter. When the thrust measuring device is bumped and shaken, a buffer can be formed between the thrust meter and the first bracket to prevent collision or displacement between the thrust meter and the first bracket, thereby preventing the thrust measurement accuracy of the thrust meter from being affected. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0019] Figure 1 is a schematic cross-sectional structural diagram of a thrust measurement device in one embodiment of the present invention; Figure 2 is a schematic diagram of a three-dimensional structure of a thrust measurement device in one embodiment of the present invention; Figure 3 is a structural schematic diagram of a buffer structure in one embodiment of the present invention; Figure 4 is another three-dimensional structural schematic diagram of a thrust measurement device in one embodiment of the present invention; Figure 5 It is a schematic diagram of a circuit connection structure in a thrust measurement device in one embodiment of the present invention.

[0020] In the figure: 1. shell; 2. measuring mechanism; 21. first bracket; 22. thrust meter; 23. buffer structure; 231. first buffer assembly; 232. second buffer assembly; 24. first accommodating cavity; 25. first through hole; 3. push rod mechanism; 31. second bracket; 311. bracket bottom plate 311; 312. protective cover 312; 32. push rod; 321. abutment structure; 33. accommodating channel; 34. first limiting groove; 35. restoring spring; 36. second limiting groove; 37. limiting sleeve; 4. circuit board; 41. battery protection circuit; 42. power measurement circuit; 5. first buffer shockproof structure; 6. battery; 7. display screen; 8. second buffer shockproof structure. DETAILED DESCRIPTION

[0021] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] In the description of the present invention, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] An embodiment of the present invention provides a thrust measurement device, such as Figure 1 and Figure 2As shown, it includes a shell 1, a measuring mechanism 2 and a push rod mechanism 3 arranged in the shell 1; the measuring mechanism 2 includes a first bracket 21 and a thrust meter 22 assembled on the first bracket 21, and a buffer structure 23 is provided between the thrust meter 22 and the first bracket 21; the push rod mechanism 3 is used to pass through the first bracket 21 and connect with the thrust meter 22, so that the thrust meter 22 measures the thrust acting on the push rod mechanism 3.

[0025] As an example, the thrust measuring device includes a housing 1, a measuring mechanism 2 and a push rod mechanism 3. The housing 1 may be a cylindrical housing, and the push rod mechanism 3 and the measuring mechanism 2 may be arranged in sequence inside the housing 1 in the axial direction, one in front of the other. The push rod mechanism 3 can be pushed under the action of an external force and abut against the measuring mechanism 2, so that the measuring mechanism 2 can measure the thrust. The measuring mechanism 2 includes a first bracket 21 and a thrust meter 22 mounted on the first bracket 21. The push rod mechanism 3 may include a push rod 32, which can pass through the first bracket 21 under the action of an external force and abut against the thrust meter 22, so that the thrust meter 22 can measure the thrust acting on the push rod mechanism 3. A buffer structure 23 is provided between the thrust meter 22 and the first bracket 21, and the buffer structure 23 is used to protect the fixed thrust meter 22 to prevent the thrust meter 22 from colliding or displacing with the first bracket 21 when the thrust measuring device is shaken, thereby affecting the thrust measurement accuracy of the thrust meter 22.

[0026] In this example, by providing a buffer structure 23 between the first bracket 21 and the thrust meter 22, the thrust meter 22 in the measuring mechanism 2 can be protected and fixed. When the thrust measuring device is bumped and shaken, a buffer can be formed between the thrust meter 22 and the first bracket 21 to prevent collision or displacement between the thrust meter 22 and the first bracket 21, thereby preventing the thrust measurement accuracy of the thrust meter 22 from being affected.

[0027] In one embodiment, a first accommodating cavity 24 is provided in the first bracket 21, and the thrust gauge 22 is assembled in the first accommodating cavity 24; the buffer structure 23 includes a first buffer component 231 and a second buffer component 232; the first buffer component 231 is arranged between the thrust gauge 22 and the first bracket 21 along the axial direction of the first accommodating cavity 24; the second buffer component 232 is arranged between the thrust gauge 22 and the first bracket 21 along the radial direction of the first accommodating cavity 24.

[0028] As an example, the first bracket 21 is provided with a first accommodating cavity 24, which may be a cavity provided inside the first bracket 21, and the shape of the cavity may be cylindrical, or a slot may be provided on the first bracket 21, and the bottom of the slot may be semi-cylindrical, and the protective cover 312 covering the first bracket 21 cooperates with the slot to form the first accommodating cavity 24. The axial direction of the first accommodating cavity 24 is consistent with the axial direction of the housing 1. The thrust meter 22 is assembled in the first accommodating cavity 24. The buffer structure 23 includes a first buffer component 231 and a second buffer component 232. The first buffer component 231 is arranged between the thrust gauge 22 and the first bracket 21 along the axial direction of the first accommodating cavity 24, and plays a buffering role in the axial direction. The second buffer component 232 is arranged between the thrust gauge 22 and the first bracket 21 along the radial direction of the first accommodating cavity 24, and plays a buffering role in the radial direction, forming multi-directional and multi-angle protection to prevent collision or displacement between the thrust gauge 22 and the first bracket 21 when the thrust measuring device is bumped and shaken.

[0029] In one embodiment, the first buffer assembly 231 includes at least one elastic abutment; the first end of the elastic abutment along the axial direction of the first accommodating cavity 24 is connected to the first bracket 21, and the second end of the elastic abutment along the axial direction of the first accommodating cavity 24 abuts against the thrust gauge 22.

[0030] As an example, the first buffer assembly 231 includes at least one elastic abutment member, which may be a ball screw disposed in the first accommodating chamber 24. The first bracket 21 may be provided with an opening, and the ball screw is assembled in the opening. One end of the ball screw along the axial direction of the first accommodating chamber 24 is connected to the first bracket 21, and the other end along the axial direction of the first accommodating chamber 24 is used to abut against the thrust gauge 22, and is used to fix the thrust gauge 22 in the axial direction and play a buffering role for the thrust gauge 22. The elastic abutment member may also be a rubber abutment member disposed on the first bracket 21, or the first bracket 21 is a rubber bracket as a whole, and the elastic abutment member is an abutment protrusion extending from the rubber bracket along the axial direction of the first accommodating chamber 24, and the free end of the abutment protrusion abuts against the thrust gauge 22, and is used to fix the thrust gauge 22 in the axial direction and play a buffering role for the thrust gauge 22.

[0031] In one embodiment, the second buffer assembly 232 includes at least one flexible buffer sheet; each flexible buffer sheet is connected to the first bracket 21 along the first side edge of the first accommodating cavity 24 in the radial direction, and each flexible buffer sheet is connected to the thrust meter 22 along the second side edge of the first accommodating cavity 24 in the radial direction.

[0032] As an example, the second buffer assembly 232 includes at least one flexible buffer sheet, which may be a rubber buffer sheet, which is assembled in the first accommodating cavity 24, or the first bracket 21 is made of rubber material, and the flexible buffer sheet is a rubber buffer sheet extending from the first bracket 21. The flexible buffer sheet may be an annular / semi-annular buffer sheet with a hole in the center for accommodating the thrust gauge 22, the outer edge of each flexible buffer sheet is connected to the first accommodating cavity 24, the inner edge of each flexible buffer sheet is connected to the thrust gauge 22, and at least one flexible buffer sheet is arranged in sequence along the axial direction of the first accommodating cavity 24. Alternatively, the flexible buffer sheet may also be a square buffer sheet, when the first accommodating cavity 24 is a cylindrical cavity, each flexible buffer sheet is connected to the cylindrical surface of the first accommodating cavity 24 along the first side edge in the radial direction of the first accommodating cavity 24, each flexible buffer sheet is connected to the thrust gauge 22 along the second side edge in the radial direction of the first accommodating cavity 24, and at least one flexible buffer sheet is arranged in sequence along the circumferential direction of the cylindrical surface. At least one flexible buffer sheet can provide a buffering effect on the thrust gauge 22 to prevent collision between the thrust gauge 22 and the first bracket 21 .

[0033] As another example, a notch may be provided along the radial direction of the first accommodating cavity 24 on one side of the flexible buffer sheet connected to the thrust gauge 22, and the notch is used to accommodate the passage of a wiring harness connected to the thrust gauge 22, so that the thrust gauge 22 can be connected to the battery 6 or the circuit board 4, etc. through the wiring harness.

[0034] In one embodiment, a first through hole 25 is provided on the first bracket 21 and is connected to the first accommodating cavity 24; the sensing end of the thrust gauge 22 is arranged opposite to the first through hole 25; the sensing end of the thrust gauge 22 is arranged at an interval with the first bracket 21; and the push rod mechanism 3 is used to pass through the first through hole 25 and connect with the thrust gauge 22.

[0035] As an example, the first bracket 21 is provided with a first through hole 25 that penetrates and connects the first accommodating cavity 24, and the sensing end of the thrust meter 22 is arranged opposite to the first through hole 25; the push rod mechanism 3 is used to pass through the first through hole 25 and connect with the thrust meter 22. There is a certain distance between the sensing end of the thrust meter 22 and the first bracket 21 where the first through hole 25 is located, forming an interval arrangement. Specifically, the sensing end of the thrust meter 22 can extend into the first through hole 25, but there is a certain distance between it and the inner wall of the first through hole 25, so as to prevent the thrust meter 22 and the first bracket 21 from colliding when the thrust measuring device is bumped and shaken.

[0036] In one embodiment, the push rod mechanism 3 includes a second bracket 31 and a push rod 32; the second bracket 31 is connected to the first bracket 21; the push rod 32 is inserted into the second bracket 31, the first end of the push rod 32 is used to pass through the first bracket 21 and abut against the thrust gauge 22, and the second end of the push rod 32 protrudes from the second bracket 31.

[0037] As an example, the push rod mechanism 3 includes a second bracket 31 and a push rod 32. The second bracket 31 is connected to the first bracket 21. Specifically, as shown in FIG. Figure 2 and Figure 4 As shown, an axial end of the first bracket 21 can be cut inwardly in the axial direction to form a receiving groove, and the second bracket 31 is assembled in the receiving groove, so that an axial end of the second bracket 31 abuts against the first bracket 21 and is arranged opposite to the first receiving cavity 24 in the first bracket 21, and the push rod 32 is inserted into the second bracket 31, and the first end of the push rod 32 is used to pass through the opening on the first bracket 21 and abut against the thrust gauge 22 in the first receiving cavity 24, and the second end of the push rod 32 protrudes from the second bracket 31. When in use, the second end of the push rod 32 is pushed to make the push rod 32 pass through the first bracket 21 and abut against the thrust gauge 22, so that the thrust gauge 22 measures the thrust applied to the push rod 32.

[0038] In one embodiment, the second bracket 31 is provided with an accommodating channel 33 for accommodating the push rod 32, and a first limiting groove 34 widened from the accommodating channel 33 along the radial direction of the push rod 32; the push rod mechanism 3 also includes a restoring spring 35 sleeved on the push rod 32; the push rod 32 is provided with an abutment structure 321, the abutment structure 321 and the restoring spring 35 are both arranged in the first limiting groove 34, the abutment structure 321 abuts against the restoring spring 35 on the side close to the measuring mechanism 2, and the abutment structure 321 abuts against the second bracket 31 on the side close to the measuring mechanism 2.

[0039] As an example, a receiving channel 33 for receiving the push rod 32 is provided in the second bracket 31, and a first limiting groove 34 is widened from the receiving channel 33 along the radial direction of the push rod 32. The push rod mechanism 3 also includes a restoring spring 35 sleeved on the push rod 32; an abutting structure 321 is provided on the push rod 32, and the abutting structure 321 and the restoring spring 35 are both arranged in the first limiting groove 34. When the return spring 35 is assembled in the first limiting groove 34, the return spring 35 is always in a compressed state. When no external force is applied to the push rod 32, the spring force of the return spring 35 itself can press the abutment structure 321 on the push rod 32 against the inner wall of the first limiting groove 34, so that the side of the abutment structure 321 close to the measuring mechanism 2 abuts against the return spring 35, and the side of the abutment structure 321 close to the measuring mechanism 2 abuts against the second bracket 31. When an external force is applied to the push rod 32, the external force can push the push rod 32 to move toward the side close to the measuring mechanism 2, further compressing the return spring 35 and accumulating elastic potential energy. When the external force applied to the push rod 32 disappears, the push rod 32 returns to the state of abutting against the second bracket 31 under the elastic force of the return spring 35, so as to maintain a fixed compression stroke and ensure the accuracy of thrust measurement.

[0040] In one embodiment, the second bracket 31 is provided with an accommodating channel 33 for accommodating the push rod 32, and a second limiting groove 36 widened from the accommodating channel 33 along the radial direction of the push rod 32; the push rod mechanism 3 also includes a limiting sleeve 37 mounted on the push rod 32, and the limiting sleeve 37 is arranged in the second limiting groove 36.

[0041] As an example, a receiving channel 33 for receiving the push rod 32 is provided in the second bracket 31, and a second limiting groove 36 is widened from the receiving channel 33 along the radial direction of the push rod 32; the push rod mechanism 3 also includes a limiting sleeve 37 sleeved on the push rod 32, and the limiting sleeve 37 is arranged in the second limiting groove 36. The limiting sleeve 37 can be provided with a receiving hole along the axial direction of the push rod 32, and the inner diameter of the receiving hole is the same as or slightly larger than the outer diameter of the push rod 32, so that the push rod 32 can only move in the limiting sleeve 37 along the opening direction of the receiving hole, ensuring that the movement stroke and movement direction of the push rod 32 are consistent each time it is pushed, so as to ensure the accuracy of thrust measurement.

[0042] As another example, the second bracket 31 may include a bracket bottom plate 311 and a protective cover 312 covering the bracket bottom plate 311. A groove is provided on the bracket bottom plate 311. The protective cover 312 cooperates with the groove to form an accommodating channel 33 for accommodating the push rod 32. A first limiting groove 34 (and a second limiting groove 36) are widened from the bottom of the groove along the radial direction of the push rod 32. The protective cover 312 may also cooperate with the groove provided on the first bracket 21 to form a first accommodating cavity 24, which is used to press the thrust gauge 22 onto the second buffer assembly 232.

[0043] In one embodiment, the thrust measurement device further includes a circuit board 4 ; the circuit board 4 is electrically connected to the thrust meter 22 ; the circuit board 4 is mounted on the first bracket 21 , and a first buffering and shockproof structure 5 is provided between the circuit board 4 and the first bracket 21 .

[0044] As an example, the thrust measurement device further includes a circuit board 4, which is electrically connected to the thrust meter 22, and is used to supply power to the thrust meter 22, and is also used to receive the thrust measurement signal output by the thrust meter 22. The circuit board 4 can be mounted on the first bracket 21, and a first buffer shockproof structure 5 is provided between the circuit board 4 and the first bracket 21, and the first buffer shockproof structure 5 is used to form a buffering effect on the circuit board 4 to prevent the circuit board 4 from colliding with the first bracket 21 or the housing 1. Specifically, the first buffer shockproof structure 5 can be an elastic shockproof protrusion / gasket, etc., provided on the first bracket 21, and one end of the first buffer shockproof structure 5 is connected to the first bracket 21, and the other end is in contact with the circuit board 4.

[0045] Furthermore, the thrust measuring device may further include a battery 6 and a display screen 7. The battery 6 is electrically connected to the circuit board 4 to supply power to the circuit board 4. The circuit board 4 is electrically connected to the display screen 7 to output a thrust measurement signal to the display screen 7 to display the measured thrust. A second accommodating cavity may also be provided on the first bracket 21. The battery 6 is mounted in the second accommodating cavity. An embedding groove may be provided on the first bracket 21 or the second bracket 31 of the push rod mechanism 3. The display screen 7 may be embedded in the embedding groove for fixing. At the same time, a display window matching the size and installation position of the display screen 7 is also provided on the housing 1, so that the display screen 7 can display the measured thrust.

[0046] In one embodiment, a control chip U1 is provided on the circuit board 4; the control chip U1 is electrically connected to the thrust meter 22 and is used to receive the thrust measurement signal output by the thrust meter 22; the control chip U1 is also used to communicate with the display screen 7 and output the thrust measurement signal to the display screen 7 so that the display screen 7 displays the thrust.

[0047] As an example, the circuit board 4 is provided with a control chip U1, which is electrically connected to the pressure sensor U2 in the thrust meter 22, and is used to receive the thrust measurement signal output by the pressure sensor U2. The power supply end of the pressure sensor U2 can be connected to the battery 6 to receive the electric energy provided by the battery 6. The control chip U1 is also used to communicate with the display screen 7, which can be a display screen 7 (LCD) set on the thrust measurement device, or a display screen 7 on an external terminal that is communicatively connected to the control chip U1. When the display screen 7 is a display screen 7 (LCD) set on the thrust measurement device, the display screen 7 (LCD) can be connected to the battery 6 through the LDO buck module U3 set on the circuit board 4, and the LDO buck module U3 bucks the voltage of the battery 6 to power the display screen 7 (LCD). The control chip U1 is connected to the display screen 7 (LCD) to provide a driving voltage for the display screen 7 (LCD) so that it can display thrust.

[0048] In one embodiment, the thrust measurement circuit may further include a USB charging interface, the power end of the control chip U1 is connected to the USB charging interface, the battery 6 in the thrust measurement device is also connected to the USB charging interface, and the USB charging interface is used for an external power supply device to receive electrical energy provided by the power supply device or the battery 6 to power the battery 6, or directly power the control chip U1 in the circuit board 4.

[0049] In one embodiment, the thrust measurement device further comprises a battery 6 arranged on the first bracket 21, and a battery protection circuit 41 and a power measurement circuit 42 are further arranged on the circuit board 4; the battery protection circuit 41 is electrically connected to the battery 6, and is used to detect the power supply voltage and the power supply current, and when the power supply voltage or the power supply current is abnormal, the negative electrode of the battery 6 is open-circuited; one end of the power measurement circuit 42 is connected to the battery 6, and the other end is connected to the control chip U1, and is used to output a power measurement signal to the control chip U1; the control chip U1 is used to output the power detection signal to the display screen 7, so that the display screen 7 displays the power. As an example, the circuit board 4 is also provided with a battery protection circuit 41 and a power measurement circuit 42. The battery protection circuit 41 is electrically connected to the battery 6, and is used to detect the power supply voltage and power supply current, and when the power supply voltage or power supply current is abnormal, the negative electrode of the battery 6 is open. Specifically, the battery protection circuit 41 may include a protection chip U4, a first control tube Q1 and a second control tube Q2, wherein the first end of the first control tube Q1 is connected to the negative end of the battery 6, the second end is connected to the first end of the second control tube Q2, and the second end of the second control tube Q2 is grounded, the protection chip U4 is connected to the battery 6, and is also connected to the second end of the first control tube Q1 and the second end of the second control tube Q2, and is used to measure the voltage and current of the battery 6, and control the first control tube Q1 and the second control tube Q2 to be turned on when the voltage or current of the battery 6 is normal, and control the first control tube Q1 and the second control tube Q2 to be turned off when the voltage or current of the battery 6 is abnormal, so that the negative electrode of the power supply is open, and the protection functions of the battery 6 such as overcharge, overdischarge, and overcurrent of charge and discharge are realized to ensure the safety of use.

[0050] One end of the power measurement circuit 42 is used to connect the battery 6, and the other end is connected to the control chip U1, and is used to output a power measurement signal to the control chip U1; the control chip U1 is also used to output the power measurement signal to the display screen 7, so that the display screen 7 displays the power. Specifically, the power measurement circuit 42 may include a metering chip U5, one end of which is connected to the battery 6, and the other end is connected to the control chip U1. It can calculate the power status of the battery 6 during charging and discharging according to the voltage and loop current of the battery 6, and output the power measurement signal to the control chip U1. The control chip U1 outputs the power measurement signal to the display screen 7, so that the display screen 7 displays the power. The metering chip U5 can also be connected to a thermistor, which is set near the battery 6 and is used to measure the temperature of the battery 6. The metering chip U5 can obtain a temperature measurement signal through the thermistor, and output the temperature measurement signal to the control chip U1, so that the control chip U1 controls the display screen 7 to display the temperature of the battery 6 according to the temperature measurement signal.

[0051] In one embodiment, if Figure 1As shown, the thrust measurement device further includes a second buffer shockproof structure 8 ; the second buffer shockproof structure 8 is assembled on an end of the first bracket 21 away from the push rod mechanism 3 , and abuts against the housing 1 .

[0052] As an example, the thrust measurement device further includes a second buffer shockproof structure 8. The second buffer shockproof structure 8 may be a buffer cotton, such as EVA cotton, etc. An assembly hole may be provided on the end of the first bracket 21 away from the push rod mechanism 3, and the second buffer shockproof structure 8 is clamped in the assembly hole. One end of the second buffer shockproof mechanism 8 abuts against the battery 6 in the first bracket 21, and the other end abuts against the housing 1, so as to play a buffer and shockproof role on the measuring mechanism 2 and the push rod mechanism 3 in the axial direction.

[0053] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A thrust measurement device, characterized in that: It comprises a housing, a measuring mechanism and a push rod mechanism arranged in the housing; The measuring mechanism comprises a first bracket and a thrust meter mounted on the first bracket, and a buffer structure is provided between the thrust meter and the first bracket; The push rod mechanism is used to pass through the first bracket and connect with the thrust meter, so that the thrust meter measures the thrust acting on the push rod mechanism.

2. The thrust measuring device according to claim 1, characterized in that: A first accommodating cavity is provided in the first bracket, and the thrust meter is assembled in the first accommodating cavity; The buffer structure includes a first buffer component and a second buffer component; The first buffer assembly is arranged between the thrust meter and the first bracket along the axial direction of the first accommodating cavity; The second buffer assembly is disposed between the thrust meter and the first bracket along a radial direction of the first accommodating cavity.

3. The thrust measurement device according to claim 2, characterized in that: The first buffer assembly includes at least one elastic abutment member; The first end of the elastic abutment member along the axial direction of the first accommodating cavity is connected to the first bracket, and the second end of the elastic abutment member along the axial direction of the first accommodating cavity abuts against the thrust meter.

4. The thrust measurement device according to claim 2, characterized in that: The second buffer component includes at least one flexible buffer sheet; Each of the flexible buffer sheets is connected to the first bracket along a first side edge in the radial direction of the first accommodating cavity, and each of the flexible buffer sheets is connected to the thrust meter along a second side edge in the radial direction of the first accommodating cavity.

5. The thrust measurement device according to claim 2, characterized in that: The first bracket is provided with a first through hole penetrating and connecting the first accommodating cavity; The sensing end of the thrust meter is arranged opposite to the first through hole; The sensing end of the thrust meter is spaced apart from the first bracket; The push rod mechanism is used to pass through the first through hole and connect with the thrust meter.

6. The thrust measurement device according to claim 1, characterized in that: The push rod mechanism includes a second bracket and a push rod; The second bracket is connected to the first bracket; The push rod is inserted into the second bracket, the first end of the push rod is used to pass through the first bracket and abut against the thrust meter, and the second end of the push rod protrudes from the second bracket.

7. The thrust measurement device according to claim 6, characterized in that: The second bracket is provided with a receiving channel for accommodating the push rod, and a first limiting groove widened from the receiving channel along the radial direction of the push rod; The push rod mechanism also includes a return spring sleeved on the push rod; The push rod is provided with an abutment structure, and the abutment structure and the return spring are both arranged in the first limiting groove. The side of the abutment structure close to the measuring mechanism abuts against the return spring, and the side of the abutment structure close to the measuring mechanism abuts against the second bracket.

8. The thrust measurement device according to claim 6, characterized in that: The second bracket is provided with a receiving channel for accommodating the push rod, and a second limiting groove widened from the receiving channel along the radial direction of the push rod; The push rod mechanism further comprises a limiting sleeve sleeved on the push rod, and the limiting sleeve is arranged in the second limiting groove.

9. The thrust measurement device according to claim 1, characterized in that: The thrust measurement device also includes a circuit board; The circuit board is electrically connected to the thrust meter; The circuit board is assembled on the first bracket, and a first buffering and shock-proof structure is arranged between the circuit board and the first bracket.

10. The thrust measurement device according to claim 9, characterized in that: The circuit board is provided with a control chip; The control chip is electrically connected to the thrust meter and is used to receive the thrust measurement signal output by the thrust meter; The control chip is also used to communicate with a display screen and output the thrust measurement signal to the display screen so that the display screen displays the thrust.

11. The thrust measurement device according to claim 10, characterized in that: The thrust measurement device further comprises a battery arranged on the first bracket, and the circuit board is further provided with a battery protection circuit and a power measurement circuit; The battery protection circuit is electrically connected to the battery, and is used to detect the power supply voltage and the power supply current, and open the negative electrode of the battery when the power supply voltage or the power supply current is abnormal; One end of the power measurement circuit is connected to the battery, and the other end is connected to the control chip, and is used to output a power measurement signal to the control chip; The control chip is used to output the power detection signal to the display screen so that the display screen can display the power.

12. The thrust measurement device according to claim 1, characterized in that: The thrust measurement device also includes a second buffer shockproof structure; The second buffering and shock-proofing structure is assembled on an end of the first bracket away from the push rod mechanism and abuts against the housing.

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