Handheld laser methane remote measuring instrument

Abstract

The utility model relates to the technical field of methane telemeters, and discloses a handheld laser methane telemeter which comprises a shell, a grip is fixedly installed at the bottom of the shell, an observation cylinder is installed on the inner wall of the end of the shell in a penetrating and sliding mode, and a contraction protection assembly is arranged in the grip. By arranging the contraction protection assembly, when an operator completes methane telemetering and loosens a buckle plate or accidentally falls, the observation cylinder is driven to contract towards the interior of the shell through the elastic force of a reset spring, and a transmission rod is driven to rotate through the arrangement of a ball and a spiral sliding groove; and then the threaded sliding plate is driven to move in the horizontal direction along the inner wall of a transmission cavity formed in the inner wall of the grip, so that the compression state of the reset spring cannot be greatly changed, the reverse acting force of the reset spring is reduced, the hand feedback feeling of an operator during holding is improved, and then safe use of equipment is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of methane telemetry instruments, in particular to a handheld laser methane telemetry instrument. Background Technique

[0002] The handheld laser methane telemetry instrument emits a beam of laser towards the target, then detects the deflected light reflected from the target, and further measures the methane concentration (ppm concentration - distance) between the detector and the target, enabling high-concentration infrared absorption measurement.

[0003] According to a disclosed handheld laser methane telemetry instrument (Publication No.: CN219737265U), in the above application, the connecting block penetrates through the inside of the connection block, and the insertion rod is relatively engaged with the connecting block through a spring. When the second connection housing is snapped onto the upper end of the first connection housing for fitting, at this time, the connecting block penetrates through the inside of the connection block, pulling the insertion rod, and at this time, the spring expands and contracts. When the insertion rod is released, the spring automatically resets, and the insertion rod is automatically snapped into the positioning hole, thereby installing and connecting the second connection housing and the first connection housing, facilitating the installation and disassembly of the telemetry instrument.

[0004] However, during the actual use of the above device, the observation tube, as a laser transceiver device, generally extends outside the housing. When the operator manually holds the device for measurement operations, the observation tube is in an extended state. However, when the operator releases it or accidentally drops the device, the exposed observation tube is easily damaged by impact, thereby causing damage to the device and affecting the subsequent normal use of the device. In view of this, we propose a handheld laser methane telemetry instrument. Content of the Utility Model

[0005] The purpose of the utility model is to provide a handheld laser methane telemetry instrument to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A handheld laser methane telemetry instrument, including a housing, a handle is fixedly installed at the bottom of the housing, an observation tube is penetrated and slidably installed on the inner wall of the end of the housing, and a contraction protection assembly is arranged inside the handle. The contraction protection assembly includes:

[0007] A transmission slide plate, the transmission slide plate is slidably installed on the inner wall of the handle, a transmission plate is fixedly connected to the side wall of the transmission slide plate, and a clamping plate is fixedly installed at one end of the transmission plate away from the transmission slide plate;

[0008] A rotating rod is rotatably installed on the inner wall of the grip. The rotating rod penetrates through a toothed ring, and the toothed ring is fixedly connected to the rotating rod. The toothed ring is coaxially and fixedly installed with a transmission gear. A toothed rod is slidably installed on the inner wall of the housing, and the end of the toothed rod is fixedly connected to the outer wall of the end of the observation tube;

[0009] A transmission rod is rotatably installed on the inner wall of the grip. A spiral chute is formed on the arc-shaped outer wall of the transmission rod. A through hole is formed on the inner wall of the transmission slide plate. A spherical ball is arranged on the arc-shaped inner wall of the through hole. A threaded slide plate is slidably installed on the inner wall of the grip. A return spring is fixedly installed between the threaded slide plate and the transmission slide plate.

[0010] Preferably, a transmission cavity is formed on the inner wall of the grip. The transmission slide plate is slidably installed on the inner wall of the transmission cavity. A rectangular hole with a width adapted to the transmission plate is formed at the end of the transmission cavity. The transmission plate is arranged inside the rectangular hole, so that the buckle plate and the grip can both maintain a vertical state.

[0011] Preferably, tooth patterns adapted to the toothed ring are formed on the side wall of the transmission plate. When the transmission plate moves towards the inner wall of the grip, the toothed ring and the rotating rod are driven to rotate in the clockwise direction. The number of transmission plates is two groups, and the two groups of transmission plates are mirror-symmetrically arranged on both sides of the vertical central axis of the grip. One group of transmission plates is provided with tooth patterns on the side, and the other group of transmission plates is provided without tooth patterns to avoid movement interference.

[0012] Preferably, the inner diameter of the through hole is adapted to the outer diameter of the transmission rod, and the transmission rod is arranged inside the through hole. Threads adapted to be threadedly connected to the threaded slide plate are formed on the arc-shaped outer wall of the transmission rod.

[0013] Preferably, a speed reduction component is arranged inside the transmission cavity. The speed reduction component includes a speed reduction toothed plate. The speed reduction toothed plate is fixedly installed on the inner wall of the transmission cavity. A swing groove is formed on the inner wall of the transmission slide plate. A rotating shaft is rotatably installed on the inner wall of the swing groove. The rotating shaft penetrates through a U-shaped frame, and the U-shaped frame is fixedly connected to the rotating shaft. A first scroll spring is sleeved on the arc-shaped outer wall of the rotating shaft. A round rod is rotatably installed on the inner wall of the U-shaped frame. The round rod penetrates through a contact roller, and the contact roller is fixedly connected to the round rod. A second scroll spring is sleeved on the arc-shaped outer wall of the round rod.

[0014] Preferably, the outer diameter of the contact roller is smaller than the gap between the side teeth of the speed reduction toothed plate, so that when relative sliding occurs between the transmission slide plate and the speed reduction toothed plate, a speed reduction motion occurs between the contact roller and the speed reduction toothed plate.

[0015] Compared with the prior art, the present utility model provides a handheld laser methane telemeter, which has the following beneficial effects:

[0016] 1. The handheld laser methane telemeter is provided with a contraction protection component. When the operator releases the buckle after completing methane telemetry or in case of accidental fall, the elastic force of the reset spring, combined with the transmission of the transmission plate, gear ring, rotating rod, transmission gear and tooth rod, drives the observation tube to contract into the housing. And through the setting of the spherical ball and the spiral chute, the transmission rod is driven to rotate, thereby promoting the threaded slide plate to move horizontally along the inner wall of the transmission cavity opened on the inner wall of the handle, so that the compression state of the reset spring will not change too much, reducing the reverse force of the reset spring, thus enhancing the hand feedback feeling when the operator holds it, and then facilitating the safe use of the device.

[0017] 2. The handheld laser methane telemeter is provided with a deceleration component. When the transmission slide plate and the deceleration tooth plate slide relatively, the teeth arranged on the side of the deceleration tooth plate drive the contact roller to move horizontally, and drive the U-shaped frame to deflect under the rotation of the rotating shaft. During the operation process of the operator, driven by the deflection of the U-shaped frame by the volute spring, the contact roller keeps a relatively stable state with the deceleration tooth plate, thus ensuring the overall stability of the observation tube and guaranteeing the normal development of methane telemetry work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of the main structure of the present utility model;

[0019] Figure 2 is a schematic sectional view of the present utility model;

[0020] Figure 3 is a schematic diagram of the contraction protection component structure of the present utility model;

[0021] Figure 4 is a schematic three-dimensional partial structure diagram of the contraction protection component of the present utility model;

[0022] Figure 5 is a schematic diagram of the deceleration component structure of the present utility model;

[0023] Figure 6 is a schematic diagram of the U-shaped frame and the contact roller structure of the present utility model;

[0024] Figure 7 of the present utility model Figure 6 is an enlarged schematic diagram of area A.

[0025] In the figure: 1. Housing; 2. Grip; 3. Observation tube; 4. Shrinkage protection assembly; 41. Transmission slide plate; 42. Transmission plate; 43. Buckle plate; 44. Rotating rod; 45. Tooth ring; 46. Transmission gear; 47. Tooth rod; 48. Transmission rod; 49. Spiral chute; 410. Through hole; 411. Sphere; 412. Threaded slide plate; 413. Return spring; 5. Deceleration assembly; 51. Deceleration tooth plate; 52. Rotating shaft; 53. U-shaped frame; 54. First scroll spring; 55. Round rod; 56. Contact roller; 57. Second scroll spring. Specific implementation manner

[0026] As Figures 1-7 shown, the present utility model provides a technical solution: a handheld laser methane telemeter, including a housing 1, a grip 2 is fixedly installed at the bottom of the housing 1, an observation tube 3 is penetrated and slidably installed on the inner wall of the end of the housing 1, a shrinkage protection assembly 4 is arranged inside the grip 2, and the shrinkage protection assembly 4 includes a transmission slide plate 41, a transmission plate 42, a buckle plate 43, a rotating rod 44, a tooth ring 45, a transmission gear 46, a tooth rod 47, a transmission rod 48, a spiral chute 49, a through hole 410, and a sphere 411. A threaded slide plate 412 is slidably installed on the inner wall of the grip 2, and a return spring 413 is fixedly installed between the threaded slide plate 412 and the transmission slide plate 41.

[0027] In an embodiment of the present utility model, a transmission slide plate 41 is slidably installed on the inner wall of the grip 2, a transmission plate 42 is fixedly connected to the side wall of the transmission slide plate 41, a buckle plate 43 is fixedly installed at one end of the transmission plate 42 away from the transmission slide plate 41, a rotating rod 44 is rotatably installed on the inner wall of the grip 2, the rotating rod 44 penetrates through a tooth ring 45, and the tooth ring 45 is fixedly connected to the rotating rod 44. A transmission gear 46 is coaxially and fixedly installed on the tooth ring 45. A tooth rod 47 is slidably installed on the inner wall of the housing 1, and the end of the tooth rod 47 is fixedly connected to the outer wall of the end of the observation tube 3. A transmission rod 48 is rotatably installed on the inner wall of the grip 2, a spiral chute 49 is formed on the arc-shaped outer wall of the transmission rod 48, a through hole 410 is formed on the inner wall of the transmission slide plate 41, a sphere 411 is arranged on the arc-shaped inner wall of the through hole 410, a threaded slide plate 412 is slidably installed on the inner wall of the grip 2, and a return spring 413 is fixedly installed between the threaded slide plate 412 and the transmission slide plate 41.

[0028] Furthermore, the interior of the housing 1 is hollow to facilitate the layout of the detection equipment. Structures such as a corresponding storage battery and a control board are provided in the interior space of the housing 1. When a staff member holds the grip 2, the detection equipment and the observation tube 3 provided inside the housing 1 are activated to remotely measure methane at the target position, and the results are displayed on the display panel inside the housing 1. Specifically, a strip-shaped limiting block is provided on the arc-shaped outer wall of the observation tube 3, and a circular hole adapted to the outer diameter of the observation tube 3 is provided at the end of the housing 1. A rectangular sliding groove adapted to the strip-shaped limiting block is provided on the arc-shaped inner surface of the circular hole, so that the observation tube 3 can only move horizontally inside the housing 1 and will not rotate relative to the housing 1. Specifically, a transmission cavity is provided on the inner wall of the grip 2. A transmission sliding plate 41 is slidably installed on the inner wall of the transmission cavity. A rectangular hole with a width adapted to the transmission plate 42 is provided at the end of the transmission cavity, and the transmission plate 42 is arranged inside the rectangular hole, so that the buckle plate 43 and the grip 2 can both maintain a vertical state. When an operator holds the grip 2, the buckle plate 43 can be triggered by the finger to move towards the grip 2 side.

[0029] In addition, tooth patterns adapted to the tooth ring 45 are provided on the side wall of the transmission plate 42. When the transmission plate 42 moves towards the inner wall of the grip 2, the tooth ring 45 and the rotating rod 44 are driven to rotate in the clockwise direction. Specifically, two sets of transmission plates 42 are provided, and the two sets of transmission plates 42 are mirror-symmetrically arranged on both sides of the vertical central axis of the grip 2, but only one of the transmission plates 42 has tooth patterns on its side to avoid movement interference. At the same time, the tooth rod 47 meshes with the transmission gear 46 to achieve transmission. When the rotating rod 44 rotates, in cooperation with the transmission gear 46, the tooth rod 47 drives the observation tube 3 to move away from the inner wall of the housing 1 along the inner wall of the housing 1, so that the observation tube 3 exposes the outer wall of the right end of the housing 1, facilitating the staff to carry out methane remote measurement work.

[0030] In addition, the inner diameter of the through hole 410 is adapted to the outer diameter of the transmission rod 48, and the transmission rod 48 is arranged inside the through hole 410. At the same time, threads adapted to the threaded sliding plate 412 are provided on the arc-shaped outer wall of the transmission rod 48, and the spherical ball 411 is arranged inside the spiral sliding groove 49. When the transmission sliding plate 41 is pushed by the transmission plate 42 to move towards the inner wall of the grip 2, in cooperation with the spherical ball 411 and the spiral sliding groove 49, the transmission rod 48 is driven to rotate, and then the threaded sliding plate 412 moves horizontally along the inner wall of the transmission cavity provided on the inner wall of the grip 2 to change the stretching and compressing states of the return spring 413.

[0031] In an embodiment of the present utility model, a speed reduction assembly 5 is disposed inside the transmission cavity. The speed reduction assembly 5 includes a speed reduction toothed plate 51. The inner wall of the transmission cavity is fixedly installed with the speed reduction toothed plate 51. A swing groove is formed in the inner wall of the transmission slide plate 41. A rotating shaft 52 is rotatably installed on the inner wall of the swing groove. The rotating shaft 52 penetrates through a U-shaped frame 53, and the U-shaped frame 53 is fixedly connected to the rotating shaft 52. A first scroll spring 54 is sleeved on the arc-shaped outer wall of the rotating shaft 52. A round rod 55 is rotatably installed on the inner wall of the U-shaped frame 53. The round rod 55 penetrates through a contact roller 56, and the contact roller 56 is fixedly connected to the round rod 55. A second scroll spring 57 is sleeved on the arc-shaped outer wall of the round rod 55.

[0032] Specifically, the number of the speed reduction toothed plates 51 is set to two groups, and the two groups of speed reduction toothed plates 51 are mirror-symmetrically arranged on both sides of the vertical central axis of the transmission cavity. Moreover, the width of the speed reduction toothed plate 51 is adapted to the width of the swing groove, thereby further ensuring the stability of the movement of the transmission slide plate 41 in the horizontal direction. At the same time, the two ends of the first scroll spring 54 are respectively fixedly connected to the arc-shaped outer wall of the rotating shaft 52 and the inner wall of the swing groove, so that the rotating shaft 52 and the U-shaped frame 53 always have a reverse rotation trend to achieve reset during rotation. Similarly, the two ends of the second scroll spring 57 are respectively fixedly connected to the arc-shaped outer wall of the round rod 55 and the inner wall of the U-shaped frame 53. Moreover, a plurality of notches are provided on the arc-shaped outer wall of the contact roller 56. Specifically, the outer diameter of the contact roller 56 is smaller than the gap between the side teeth of the speed reduction toothed plate 51. Thus, when relative sliding occurs between the transmission slide plate 41 and the speed reduction toothed plate 51, the teeth provided on the side of the speed reduction toothed plate 51 will drive the contact roller 56 to move horizontally, and drive the U-shaped frame 53 to deflect under the rotation of the rotating shaft 52. During the operation process of the operator, driven by the deflection of the U-shaped frame 53 by the first scroll spring 54, the contact roller 56 will maintain a relatively stable state with the speed reduction toothed plate 51, thereby ensuring the overall stability of the observation cylinder 3 to ensure the normal development of methane telemetry work.

[0033] In the present utility model, during use, the operator holds the grip 2 by hand and holds the buckle plate 43 with fingers to prompt the buckle plate 43 to move towards the side of the grip 2, and push the transmission plate 42 to move towards the inner wall side of the transmission cavity. Cooperating with the tooth pattern arranged on the side of the transmission plate 42, the toothed ring 45 and the rotating rod 44 are driven to rotate. At this time, cooperating with the transmission of the transmission gear 46 and the toothed rod 47, the observation cylinder 3 moves outwards along the inner wall of the housing 1, so that the observation cylinder 3 is exposed outwards. At this time, the operator starts the control panel on the housing 1 and synchronously starts the detection device and the observation cylinder 3 arranged inside the housing 1 to remotely measure methane at the target position. When the operator releases the hand, due to the elastic force of the return spring 413, the transmission slide plate 41 will push the transmission plate 42 and the buckle plate 43 to move away from the side of the grip 2. At this time, cooperating with the transmission of the toothed ring 45 and the rotating rod 44, driven by the transmission gear 46, the toothed rod 47 drives the observation cylinder 3 to contract into the interior of the housing 1, so as to facilitate the protection of the observation cylinder 3 when the device is carried or accidentally falls, so as to ensure the service life of the device.

[0034] The above has generally described the present utility model in detail. However, based on the present utility model, some modifications or improvements can be made, which are obvious to those of ordinary skill in the art in the technical field. Therefore, the modifications or improvements made without departing from the spirit of the present utility model are all within the protection scope of the present utility model.

Claims

1. A handheld laser methane remote detector, comprising a housing (1), a handle (2) fixedly mounted on the bottom of the housing (1), an observation tube (3) penetrating and slidably mounted on the inner wall of the end of the housing (1), characterized in that: A shrinkage protection component (4) is arranged inside the handle (2), and the shrinkage protection component (4) comprises: A transmission slide plate (41), the inner wall of the handle (2) is slidably mounted with the transmission slide plate (41), the side wall of the transmission slide plate (41) is fixedly connected with a transmission plate (42), and a buckle plate (43) is fixedly mounted on one end of the transmission plate (42) away from the transmission slide plate (41); A rotating rod (44), the inner wall of the handle (2) is rotatably mounted with the rotating rod (44), the rotating rod (44) is penetrated by a toothed ring (45), and the toothed ring (45) is fixedly connected to the rotating rod (44), a transmission gear (46) is coaxially fixedly mounted on the toothed ring (45), the inner wall of the housing (1) is slidably mounted with a toothed rod (47), and the end of the toothed rod (47) is fixedly connected to the outer wall of the end of the observation tube (3); A transmission rod (48), the transmission rod (48) is rotatably mounted on the inner wall of the handle (2), a spiral groove (49) is provided on the arc-shaped outer wall of the transmission rod (48), a through hole (410) is provided on the inner wall of the transmission slide plate (41), a ball (411) is provided on the arc-shaped inner wall of the through hole (410), a threaded slide plate (412) is slidably mounted on the inner wall of the handle (2), and a return spring (413) is fixedly mounted between the threaded slide plate (412) and the transmission slide plate (41).

2. A handheld laser methane remote detector according to claim 1, characterized in that: The inner wall of the handle (2) is provided with a transmission cavity, the transmission slide plate (41) is slidably mounted on the inner wall of the transmission cavity, and the end of the transmission cavity is provided with a rectangular hole whose width matches that of the transmission plate (42), and the transmission plate (42) is arranged inside the rectangular hole.

3. A handheld laser methane remote detector according to claim 1, characterized in that: The side wall of the transmission plate (42) is provided with teeth that can be matched with the gear ring (45), and the number of the transmission plates (42) is set to two groups, and the two groups of transmission plates (42) are mirror-imaged and arranged on both sides of the vertical central axis of the handle (2), and one group of transmission plates (42) is provided with teeth on the side surface, and the other group of transmission plates (42) is arranged without teeth.

4. A handheld laser methane remote detector according to claim 1, characterized in that: The inner diameter of the penetration hole (410) is matched with the outer diameter of the transmission rod (48), and the transmission rod (48) is arranged inside the penetration hole (410). The arc-shaped outer wall of the transmission rod (48) is provided with a thread that can be threadedly connected to the threaded slide plate (412).

5. A handheld laser methane remote detector according to claim 2, characterized in that: A deceleration assembly (5) is arranged inside the transmission cavity, and the deceleration assembly (5) comprises a deceleration tooth plate (51). The inner wall of the transmission cavity is fixedly mounted with the deceleration tooth plate (51). The inner wall of the transmission slide plate (41) is provided with a swinging groove, and the inner wall of the swinging groove is rotatably mounted with a rotating shaft (52). The rotating shaft (52) is penetrated by a U-shaped frame (53), and the U-shaped frame (53) is fixedly connected to the rotating shaft (52). A volute spring (54) is sleeved on the arc-shaped outer wall of the rotating shaft (52). A round rod (55) is rotatably mounted on the inner wall of the U-shaped frame (53). The round rod (55) is penetrated by a contact roller (56), and the contact roller (56) is fixedly connected to the round rod (55). A volute spring (57) is sleeved on the arc-shaped outer wall of the round rod (55).

6. A handheld laser methane remote detector according to claim 5, characterized in that: The outer diameter of the contact roller (56) is smaller than the gap between the side teeth of the reduction gear plate (51).

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