Exhaust assembly of diesel fork lift truck

Abstract

The utility model discloses an exhaust assembly of a diesel fork lift truck, which comprises a main body mechanism, the main body mechanism comprises a first exhaust pipe, a second exhaust pipe arranged in an inner cavity of the first exhaust pipe and extending out of the first exhaust pipe, an air inlet pipe installed on one side of the first exhaust pipe, a water drainage pipe installed at the bottom end of the first exhaust pipe and limiting sleeves symmetrically fixed to the two sides of the first exhaust pipe. The driving piece is installed on one side of the first exhaust pipe, one end of the transmission frame is meshed with the driving piece, the other end of the transmission frame is fixedly connected with the end of the second air inlet pipe, the first exhaust pipe and the second exhaust pipe are both used for exhausting tail gas, and the second exhaust pipe upwards extends out of the first exhaust pipe. According to the diesel fork lift truck exhaust assembly, tail gas is exhausted at the position higher than the position of a driver, the tail gas is effectively prevented from being sucked by the driver, an annular protrusion is fixed to the bottom end of the second exhaust pipe, and the diesel fork lift truck exhaust assembly has the advantages of being adjustable in exhaust pipe height and high in practicability.

Description

Technical Field

[0001] This utility model relates to the technical field, specifically to an exhaust assembly for an internal combustion forklift. Background Technology

[0002] Forklifts are industrial handling vehicles, referring to various wheeled handling vehicles used for loading, unloading, stacking, and short-distance transportation of palletized goods. They are widely used in railway stations, airports, factories, warehouses, and other sectors of the national economy. They are highly efficient equipment for mechanized loading, unloading, stacking, and short-distance transportation. Forklifts can be divided into internal combustion forklifts and electric forklifts according to their power source. Internal combustion forklifts are powered by engines, have strong power, low road surface requirements, and a wide range of applications. However, the engine generates power by burning fuels such as diesel, gasoline, and liquefied petroleum gas, and the exhaust gas is discharged through the exhaust pipe.

[0003] Existing internal combustion forklift exhaust pipes are mainly divided into three types: low exhaust, medium exhaust, and high exhaust. Among them, the existing high exhaust assemblies of forklifts have the following drawbacks during use: the exhaust port of the high exhaust is located at the driver's position, and the exhaust gas can easily be inhaled by the driver, causing harm to the driver's health. In addition, high exhaust forklifts generally have a phenomenon of "black water" spraying, that is, when starting at a certain time, "black water" often sprays out from the high exhaust port, causing adverse effects. The "black water" is formed when water vapor and fuel vapor inside the high exhaust cap condense into liquid on the cold inner wall of the high exhaust cap after the forklift stops working, and then mixes with particles in the exhaust gas. Therefore, there is room for improvement. Utility Model Content

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: an exhaust assembly for an internal combustion forklift, comprising: a main body mechanism, the main body mechanism including a first exhaust pipe, a second exhaust pipe disposed in the inner cavity of the first exhaust pipe and extending out of the first exhaust pipe, an intake pipe installed on one side of the first exhaust pipe, a drain pipe installed at the bottom end of the first exhaust pipe, limiting sleeves symmetrically fixed on both sides of the first exhaust pipe, a driving component installed on one side of the first exhaust pipe, and a transmission frame whose one end meshes with the driving component and whose other end is fixedly connected to the end of the second intake pipe.

[0006] Multiple baffles are fixed in an array on the inner wall of the second exhaust pipe, and adjacent baffles are arranged in a centrally symmetrical manner to form an S-shaped flow channel inside the second exhaust pipe.

[0007] In a preferred embodiment, the present invention can be further configured such that the driving component includes a fixed seat symmetrically fixed on the outer side of the first exhaust pipe, a threaded rod rotatably mounted between the relatively fixed seats, and a motor fixed on the first exhaust pipe with its shaft fixedly connected to the end of the threaded rod.

[0008] In a preferred embodiment, the present invention can be further configured as follows: the transmission frame includes a round rod that moves through the limiting sleeve, a ring that is fixedly sleeved on the end of the second exhaust pipe and fixedly connected to the round rod, a threaded sleeve sleeved on the threaded rod, and a connecting rod that connects the threaded sleeve and the end of the round rod, wherein the threaded rod and the threaded sleeve mesh with each other.

[0009] In a preferred embodiment, the present invention can be further configured such that: an annular protrusion is fixed at the bottom end of the second exhaust pipe, and the outer diameter of the annular protrusion is equal to the inner diameter of the first exhaust pipe.

[0010] In a preferred embodiment, the present invention can be further configured such that the intake pipe includes a corrugated pipe with one end connected to the first exhaust pipe and a connecting sleeve installed on the other end of the corrugated pipe.

[0011] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0012] 1. In this utility model, a second exhaust pipe is provided inside the first exhaust pipe, extending out of the first exhaust pipe. Limiting sleeves are fixed on both sides of the first exhaust pipe. A driving component is installed on the outer surface of the first exhaust pipe, and a transmission frame is provided. One end of the transmission frame is engaged with the driving component, and the other end is fixedly connected to the second exhaust pipe. With the above configuration, the driving component is activated, and the transmission frame can drive the second exhaust pipe to extend upward from the first exhaust pipe, further increasing the height of the exhaust port and discharging the exhaust gas at a height higher than the driver's position. This effectively prevents the exhaust gas from being inhaled by the driver, increasing practicality. In addition, the height of the second exhaust pipe can be adjusted according to actual usage.

[0013] 2. In this utility model, the first exhaust pipe is connected to the particulate filter of the exhaust gas through the intake pipe, and a drain pipe is installed at the bottom of the first exhaust pipe. Multiple baffles are fixed in an array on the inner wall of the second exhaust pipe, and the adjacent baffles are arranged in a centrally symmetrical manner to form an S-shaped flow channel inside the second exhaust pipe. This can effectively reduce the exhaust gas velocity when the exhaust gas passes through the second exhaust pipe, thereby preventing the exhaust gas velocity from being too fast and causing black water to spray out from the exhaust pipe. In addition, the water generated by condensation is directly discharged through the drain pipe, further increasing the practical performance. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the present invention;

[0016] Figure 3 This is a schematic diagram of the structure and cross-section of the first exhaust pipe of this utility model;

[0017] Figure 4 This is a partial structural schematic diagram of the present invention.

[0018] Figure label:

[0019] 100. Main body; 110. First exhaust pipe; 120. Second exhaust pipe; 121. Baffle; 122. Annular protrusion; 130. Intake pipe; 131. Bellows; 132. Connecting sleeve; 140. Drain pipe; 150. Limiting sleeve; 160. Driving component; 161. Fixed base; 162. Threaded rod; 163. Motor; 170. Transmission frame; 171. Round rod; 172. Circular ring; 173. Threaded sleeve; 174. Connecting rod. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0021] Some embodiments of this utility model are described below with reference to the accompanying drawings.

[0022] Example 1:

[0023] Combination Figure 1-4 As shown, this embodiment provides an exhaust assembly for an internal combustion forklift, including: a main body 100.

[0024] The main body 100 includes a first exhaust pipe 110, a second exhaust pipe 120 disposed in the inner cavity of the first exhaust pipe 110 and extending out of the first exhaust pipe 110, an intake pipe 130 installed on the first exhaust side, a drain pipe 140 installed at the bottom end of the first exhaust pipe 110, a limiting sleeve 150 symmetrically fixed on both sides of the first exhaust pipe 110, a drive member 160 installed on one side of the first exhaust pipe 110, and a transmission frame 170 with one end engaged with the drive member 160 and the other end fixedly connected to the end of the second intake pipe 130.

[0025] Both the first exhaust pipe 110 and the second exhaust pipe 120 are used for exhaust gas discharge. The second exhaust pipe 120 extends upward from the first exhaust pipe 110, which can further increase the height of the exhaust port and discharge the exhaust gas at a height higher than the driver's position, effectively preventing the driver from inhaling the exhaust gas. An annular protrusion 122 is fixed at the bottom end of the second exhaust pipe 120. The outer diameter of the annular protrusion 122 is equal to the inner diameter of the first exhaust pipe 110, ensuring the stability of the second exhaust pipe 120 in the extension and retraction movement within the first exhaust pipe 110.

[0026] Multiple baffles 121 are fixed in an array on the inner wall of the second exhaust pipe 120. The adjacent baffles 121 are arranged in a centrally symmetrical manner, forming an S-shaped flow channel inside the second exhaust pipe 120. This effectively reduces the exhaust gas velocity when it passes through, thereby preventing the excessively fast exhaust gas from carrying black water out of the exhaust pipe.

[0027] The drain pipe 140 is used to drain the condensate in the first exhaust pipe 110 and the second exhaust pipe 120 to prevent it from accumulating in the inner cavity of the first exhaust pipe 110 and the second exhaust pipe 120.

[0028] The intake pipe 130 is used to guide the exhaust gas passing through the particulate filter into the first exhaust pipe 110. The intake pipe 130 includes a bellows 131 with one end connected to the first exhaust pipe 110 and a connecting sleeve 132 installed on the other end of the bellows 131. The connecting sleeve 132 is used to connect the particulate filter, and the bellows 131 is used to guide the exhaust gas into the first exhaust pipe 110.

[0029] The drive unit 160 includes a fixed seat 161 symmetrically fixed to the outer surface of the first exhaust pipe 110, a threaded rod 162 rotatably mounted between the fixed seats 161, and a motor 1163 fixed to the first exhaust pipe 110 with its shaft fixedly connected to the end of the threaded rod 162. Meanwhile, the transmission frame 170 includes a round rod 171 that movably passes through the limiting sleeve 150, a ring 172 fixedly sleeved at the end of the second exhaust pipe 120 and fixedly connected to the round rod 171, and a threaded rod sleeved on the threaded rod 162. The sleeve 173 and the connecting rod 174 connecting the threaded sleeve 173 and the end of the round rod 171 are connected. The threaded rod 162 and the threaded sleeve 173 mesh with each other, so that when the motor 1163 starts, it drives the threaded rod 162 to rotate. The rotation of the threaded rod 162 drives the threaded sleeve 173 to move upward. The upward movement of the threaded sleeve 173, together with the connecting rod 174, the round rod 171 and the ring 172, drives the second exhaust pipe 120 to move upward synchronously, thereby increasing the height of the second exhaust pipe 120 and facilitating the height adjustment of the second exhaust pipe 120.

[0030] The working principle and usage process of this utility model are as follows: When in use, the exhaust assembly is installed on the forklift, and the connecting sleeve 132 is connected to the exhaust gas particulate filter. During operation, the motor 1163 starts, driving the threaded rod 162 to rotate. The rotation of the threaded rod 162 drives the threaded sleeve 173 to move upward. The upward movement of the threaded sleeve 173, together with the connecting rod 174, the round rod 171, and the ring 172, drives the second exhaust pipe 120 to move upward synchronously, raising the height of the second exhaust pipe 120 so that the exhaust port at the top of the second exhaust pipe 120 is higher than the driver's position, preventing the driver from inhaling exhaust gas. In addition, after the exhaust gas enters the first exhaust pipe 110 and the second exhaust pipe 120, the flow rate of the exhaust gas is reduced by the action of the baffle 121, preventing the exhaust gas flow rate from being too fast and causing black water to spray out from the exhaust pipe. At the same time, the water droplets generated by condensation enter the drain pipe 140 along the inner wall of the first exhaust pipe 110 for discharge.

[0031] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An exhaust assembly for an internal combustion forklift, comprising: The main body (100) is characterized in that it includes a first exhaust pipe (110), a second exhaust pipe (120) disposed in the inner cavity of the first exhaust pipe (110) and extending out of the first exhaust pipe (110), an intake pipe (130) installed on the first exhaust side, a drain pipe (140) installed at the bottom end of the first exhaust pipe (110), a limiting sleeve (150) symmetrically fixed on both sides of the first exhaust pipe (110), a driving member (160) installed on one side of the first exhaust pipe (110), and a transmission frame (170) with one end engaged with the driving member (160) and the other end fixedly connected to the end of the second intake pipe (130). Multiple baffles (121) are fixed in an array on the inner wall of the second exhaust pipe (120), and adjacent baffles (121) are arranged in a centrally symmetrical manner to form an S-shaped flow channel inside the second exhaust pipe (120).

2. The exhaust assembly for an internal combustion forklift according to claim 1, characterized in that, The drive unit (160) includes a fixed seat (161) symmetrically fixed on the outer side of the first exhaust pipe (110), a threaded rod (162) rotatably mounted between the fixed seats (161), and a motor (1163) fixed on the first exhaust pipe (110) with its shaft fixedly connected to the end of the threaded rod (162).

3. The exhaust assembly for an internal combustion forklift according to claim 1, characterized in that, The transmission frame (170) includes a round rod (171) that moves through the limiting sleeve (150), a ring (172) that is fixedly sleeved on the end of the second exhaust pipe (120) and fixedly connected to the round rod (171), a threaded sleeve (173) sleeved on the threaded rod (162), and a connecting rod (174) that connects the threaded sleeve (173) and the end of the round rod (171). The threaded rod (162) and the threaded sleeve (173) mesh with each other.

4. The exhaust assembly for an internal combustion forklift according to claim 1, characterized in that, The bottom end of the second exhaust pipe (120) is fixed with an annular protrusion (122), the outer diameter of which is equal to the inner diameter of the first exhaust pipe (110).

5. The exhaust assembly for an internal combustion forklift according to claim 1, characterized in that, The intake pipe (130) includes a bellows (131) with one end connected to the first exhaust pipe (110) and a connecting sleeve (132) installed on the other end of the bellows (131).

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