Cooling device for laser range finder

Abstract

The utility model discloses a laser range finder cooling device, which is characterized in that a protective shell is arranged, a circulating water jacket is arranged outside a laser range finder, a circulating water pump is used for driving, nitrogen is used for cooling the inside, the laser range finder is matched with the circulating water jacket for use, a sensor feeds back a temperature signal to a PLC (Programmable Logic Controller), and when the temperature exceeds 40 DEG C, a 1 # valve is opened; when the temperature exceeds 50 DEG C, the valve 2 is opened, and when the temperature is lower than 40 DEG C, the valve 1 and the valve 2 are both closed, meanwhile, the circulating water jacket continuously cools, when nitrogen blows over the surface of an object, heat on the surface of the object can be absorbed, heat conduction and heat dissipation are achieved through a convective heat transfer mechanism, meanwhile, heat exchange with the surrounding environment is achieved, and therefore the temperature of the surface of the object is reduced; the design ensures that the cooling device can rapidly dissipate heat and protect the performance and the service life of the laser range finder in a high-temperature environment, meanwhile, the air outlet faces the dust cover, dust outside the dust cover can be cleaned, and the laser range finder is prevented from being damaged. And the internal and external neatness of the dust cover can be ensured by circulating blowing, so that the precision and accuracy of the laser range finder are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of laser rangefinder cooling equipment, in particular to a laser rangefinder cooling device. Background Technique

[0002] The high-temperature environment during sintering will cause the temperature of the internal components of the laser rangefinder to rise, which in turn affects the frequency and phase stability of the laser, resulting in the distortion and instability of the measurement signal. This increases the measurement error and even makes it impossible to accurately measure the thickness of the sintered material. The existing cooling devices cannot effectively reduce the temperature of the laser rangefinder in a high-temperature environment, resulting in a continuous increase in the internal temperature, exacerbating the distortion problem, and further leading to a decline in the performance and shortening of the lifespan of the laser rangefinder. At the same time, dust adheres to the laser emission port of the laser rangefinder, making it impossible to accurately measure the distance, causing deviation in the measurement results, reducing the accuracy, and resulting in signal interference, making the laser rangefinder unable to correctly identify the distance of the target object or causing misjudgment. Content of the Utility Model

[0003] The purpose of the utility model is to provide a laser rangefinder cooling device to solve the problems of distortion and instability of the measurement signal caused by a high-temperature environment, continuous increase in the internal temperature, exacerbation of distortion, and further leading to a decline in the performance and shortening of the lifespan of the laser rangefinder. At the same time, dust adsorption causes inaccurate distance measurement, resulting in deviation of the measurement results, reduction of accuracy, and signal interference.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A laser rangefinder cooling device, which is based on a PLC program as a whole, includes a laser rangefinder, a support base, a protective housing, a nitrogen inlet, and an adjustment device. The laser rangefinder is hinged to the support base. The right end of the support base is connected to an adjustment device. A fixing rod is arranged at the bottom end of the support base, and a temperature measuring element is connected to the fixing rod. The temperature measuring element is connected to the laser rangefinder by a circuit. A circulating water jacket is arranged outside the laser rangefinder and is driven by a circulating water pump. A protective housing is arranged outside the circulating water jacket. Nitrogen inlets are symmetrically arranged on the front and back sides at the top end of the protective housing, and an air outlet is arranged at the bottom end of the protective housing. A dust-proof cover is arranged on the protective housing corresponding to the emission port of the laser rangefinder.

[0005] Preferably, the adjustment device includes a connecting shaft, a gear, and an adjustment rod. The connecting shaft passes through the protective housing and is fixedly connected to the vertical end of the support base and the laser rangefinder. A first gear is connected to the connecting shaft. A second gear is meshed with one side of the gear. The second gear is arranged inside the protective housing for limiting. The other end of the connecting shaft is connected to an adjustment rod, which is located on the protective housing.

[0006] Preferably, the support base is composed of a base and two vertically symmetrically arranged connecting rods for supporting the laser rangefinder. A display screen and a data interface are arranged at the bottom end of the support base.

[0007] Preferably, the outlet of the air outlet faces the dust cover.

[0008] Preferably, a signal receiver is provided on the circulating water pump for controlling the opening or closing of the circulating water pump.

[0009] Preferably, a signal transmitter is provided on the laser rangefinder for transmitting data and temperature change conditions.

[0010] Preferably, a solenoid valve is provided on the nitrogen air inlet for controlling the transmission and closing of nitrogen.

[0011] Compared with the prior art, the beneficial effects of the present utility model are:

[0012] By providing a protective housing and installing a circulating water jacket outside the laser rangefinder, driving with a circulating water pump, and at the same time using nitrogen to cool the inside, cooperating with the circulating water jacket, and at the same time the sensor feeds back the temperature signal to the PLC. When the temperature exceeds 40 °C, the 1# valve is opened. When it exceeds 50 °C, the 2# valve is opened. When the temperature is lower than 40 °C, both the 1# and 2# valves are closed, and at the same time the circulating water jacket continuously cools down. When nitrogen blows over the surface of the object, it will absorb the heat on the surface of the object and achieve heat conduction and dissipation through the convective heat transfer mechanism. At the same time, it exchanges heat with the surrounding environment, thereby reducing the temperature of the object surface, and further reducing the temperature outside the circulating water jacket to further cool the laser rangefinder. Such a design ensures that in a high-temperature environment, the cooling device can quickly dissipate heat, protecting the performance and lifespan of the laser rangefinder. At the same time, the air outlet is arranged to face the dust cover, which can clean the dust outside the dust cover, and the circulating blowing can also ensure the cleanliness inside and outside the dust cover, thereby ensuring the accuracy and precision of the laser rangefinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the internal structure of the protective housing of the present utility model.

[0014] Figure 2 It is a schematic diagram of the dust cover structure of the present utility model.

[0015] Figure 3 It is a schematic diagram of the adjusting device of the present utility model.

[0016] In the figure: 1. Laser rangefinder; 2. Protective housing; 3. Nitrogen air inlet; 4. Adjusting device; 5. Temperature measuring element; 6. Circulating water jacket; 7. Dust cover; 8. Air outlet. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0018] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model 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 should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0019] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] Embodiment 1: Please refer to Figures 1 - 3 , an embodiment provided by the present utility model: a cooling device for a laser rangefinder,

[0022] The whole is based on the PLC program. An electromagnetic valve is set on the nitrogen inlet 3 to control the transmission and shutdown of nitrogen. A signal transmitter is set on the laser rangefinder 1 to transmit data and temperature change conditions. A signal receiver is set on the circulating water pump to accurately control the opening and closing of the pump, adjust the flow rate of the circulating water according to real-time requirements, improve the stability and efficiency of the system, and control the opening or closing of the circulating water pump. The temperature measuring element 5 detects the temperature of the laser rangefinder 1 in the protective housing 2. At the same time, the sensor on the laser rangefinder 1 feeds back the temperature signal to the PLC, and the PLC controls two-way electromagnetic valves according to the temperature in the cabinet. It includes the laser rangefinder 1, the device for measuring the thickness of the sintering material surface, the support seat, the protective housing 2, the nitrogen inlet 3, and the adjusting device 4. The laser rangefinder 1 is hinged to the support seat to support the laser rangefinder 1 and ensure its stable installation in a suitable position. The right end of the support seat is connected to the adjusting device 4. A fixed rod is arranged at the bottom end of the support seat, and a temperature measuring element 5 is connected to the fixed rod. The temperature measuring element 5 is connected to the laser rangefinder 1 by wire. A circulating water jacket 6 is arranged outside the laser rangefinder 1. Driven by the circulating water pump, the circulating water jacket 6 is a circulating water system arranged outside the laser rangefinder 1 for cooling. The circulating water jacket 6 is made of copper pipe as a heat conducting material, which can quickly conduct heat to the surface of the circulating water jacket 6, and then dissipate heat through the circulation of water. Copper has good high-temperature resistance and is suitable for heat dissipation devices in high-temperature environments. A protective housing 2 is arranged outside the circulating water jacket 6. The protective housing 2 protects the laser rangefinder 1 from the external environment, such as dust, water vapor, etc. Nitrogen inlets 3 are symmetrically arranged on the front and back sides at the top end of the protective housing 2. The nitrogen inlets 3 are connected to nitrogen to provide nitrogen into the system to reduce the temperature of the laser rangefinder 1 to prevent overheating. At the same time, it is used in conjunction with the circulating water jacket 6 to further reduce the temperature of the circulating water jacket 6, and further accelerate the reduction of the temperature of the laser rangefinder 1, ensuring the performance and life of the laser rangefinder 1, and avoiding distortion caused by high temperature, thus affecting the frequency and phase stability of the laser, avoiding the instability of the measurement signal, increasing the measurement error, and making it impossible to accurately measure the thickness of the sintered material. At the same time, the nitrogen inlets 3 are symmetrically arranged. The double inlets can ensure that nitrogen enters the protective housing evenly, making the internal gas distribution more uniform, improving the environmental stability and operation effect, increasing the nitrogen intake volume, increasing the nitrogen concentration in the protective housing, and thus more effectively protecting the internal working environment. If one inlet fails or is blocked, the other inlet can still supply nitrogen, ensuring the continuous operation and stability of the system. An air outlet 8 is arranged at the bottom end of the protective housing 2. The outlet of the air outlet 8 faces the dust-proof cover 7. A dust-proof cover 7 is arranged on the protective housing 2 corresponding to the emission port of the laser rangefinder 1. The air outlet 8 discharges the air inside the protective housing 2 to reduce the system temperature. At the same time, the outlet of the air outlet 8 faces the dust-proof cover 7 to clean the dust on the outer surface of the dust-proof cover 7, avoiding dust from hindering the normal emission and reception of the laser, resulting in the laser rangefinder 1 being unable to accurately measure the distance.The scattered laser signal causes signal interference, affecting the clarity and focusing effect of the laser beam. Meanwhile, through nitrogen circulation inside, the surface of the dust cover 7 inside is cleaned. The support base consists of a base and two vertically symmetrically arranged connecting rods, which are used to support the laser rangefinder 1. A display screen and a data interface are provided at the bottom of the support base. Setting the display screen and the data interface can monitor the status and parameters of the device in real time, such as temperature, pressure, etc., so as to adjust and optimize the operation in a timely manner.

[0023] Nitrogen is used to cool the inside, and it is used in conjunction with the circulating water jacket 6. Meanwhile, the sensor feeds back the temperature signal to the PLC. When the temperature exceeds 40 °C, the 1# valve is opened. When it exceeds 50 °C, the 2# valve is opened. And when the temperature is lower than 40 °C, both the 1# and 2# valves are closed. At the same time, the circulating water jacket 6 continues to cool. When nitrogen blows over the surface of an object, it will absorb the heat on the surface of the object and achieve heat conduction and dissipation through the convection heat transfer mechanism. At the same time, it exchanges heat with the surrounding environment, thereby reducing the temperature of the object surface, and further reducing the temperature outside the circulating water jacket 6 to further cool the laser rangefinder 1.

[0024] Embodiment 2: Please refer to Figure 2 , on the basis of Embodiment 1, it also has the following structure:

[0025] The adjusting device 4 includes a connecting shaft, a gear, and an adjusting rod. The connecting shaft passes through the protective housing 2 and is fixedly connected to the vertical end of the support base to the laser rangefinder 1. The connecting shaft passes through the protective housing 2 and the support base and is fixedly connected to the laser rangefinder 1, playing a role in connecting various components, enabling the adjusting device 4 to be connected to the laser rangefinder 1 and realizing adjustment through rotation. A first gear is connected to the connecting shaft. A second gear is meshed on one side of the gear. The second gear is arranged inside the protective housing 2 for limiting. The other end of the connecting shaft is connected to an adjusting rod, which is located on the protective housing 2. The first gear and the second gear are meshed to limit the position by rotation. By rotating the adjusting rod, the angle of the laser rangefinder 1 is adjusted to measure the sintering thickness at different angles.

[0026] The above are only the embodiments of the present invention. Specific structures and common knowledge such as characteristics well known in the art are not described in detail here. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A laser rangefinder cooling device, based on a PLC program as a whole, characterized by: The invention comprises a laser rangefinder (1), a support base, a protective shell (2), a nitrogen air inlet (3), and an adjusting device (4), wherein the laser rangefinder (1) is hinged on the support base, the right end of the support base is connected to the adjusting device (4), the bottom end of the support base is provided with a fixing rod, the fixing rod is connected to a temperature measuring element (5), the temperature measuring element (5) is connected to the laser rangefinder (1) circuit, the laser rangefinder (1) is provided with a circulating water jacket (6) outside, driven by a circulating water pump, the circulating water jacket (6) is provided with a protective shell (2) outside, the top of the protective shell (2) is symmetrically provided with nitrogen air inlets (3) on both sides, the bottom end of the protective shell (2) is provided with an air outlet (8), and the protective shell (2) is provided with a dust cover (7) corresponding to the emission port of the laser rangefinder (1).

2. The laser rangefinder cooling device according to claim 1, characterized in that: The adjustment device (4) comprises a connecting shaft, a gear, and an adjustment rod. The connecting shaft passes through the protective housing (2) and is fixedly connected to the laser rangefinder (1) at the vertical end of the support seat. The connecting shaft is connected to a first gear, and a second gear is meshed on one side of the gear. The second gear is arranged in the protective housing (2) and is used for limiting position. The other end of the connecting shaft is connected to the adjustment rod, which is located on the protective housing (2).

3. The laser rangefinder cooling device according to claim 1, characterized in that: The support base is composed of a base and two vertically symmetrical connecting rods, and is used to support the laser rangefinder (1). A display screen and a data interface are provided at the bottom end of the support base.

4. The laser rangefinder cooling device according to claim 1, characterized in that: The outlet of the air outlet (8) faces the dust cover (7).

5. The laser rangefinder cooling device according to claim 1, characterized in that: The circulating water pump is provided with a signal receiver for controlling the opening or closing of the circulating water pump.

6. The laser rangefinder cooling device according to claim 1, characterized in that: The laser rangefinder (1) is provided with a signal transmitter for transmitting data and temperature changes.

7. The laser rangefinder cooling device according to claim 1, characterized in that: The nitrogen air inlet (3) is provided with a solenoid valve for controlling the transmission and closing of nitrogen.

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